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The answer to your questions is both yes and no, respectively. Yes, it is safe for most foods to be in contact with zinc. No, most foods do not cause excessive corrosion of galvanized steel. There is really only one exception to these statements: acidic foods. Let's get into some specifics to completely answer your question. The U.S. Department of Health and Human Services' 1997 Food Code, Section 4-101.15 Galvanized Metal, Use Limitation, reads: "Galvanized metal may not be used for utensils or food contact surfaces of equipment that are used in contact with acidic food" [emphasis added]. Therefore, in accordance with the 1997 Food Code, the use of galvanized steel in contact with meat and nonacidic fruits and vegetables is acceptable. Additionally, the US. Department of Agriculture states, Chrome, nickel, tin, and zinc (galvanization) platings will generally be acceptable for most appropriate applications" (Accepted Meat and Poultry Equipment, Food Safety and Inspection Service Directive 11220.1).

One of the largest beef production plants in the U.S., located in Plainwell, Michigan, demonstrates a wide use of galvanized steel throughout the plant. As reported in 1982, one of the company employees is quoted as saying, "If it weren't for galvanizing, we couldn't operate and maintain our margin of profit." Galvanized steel is used successfully throughout the plant for beams, columns, stairs, railings, kick plates, and overhead monorails.

The only restriction on the use of galvanized steel in contact with food arise if the food is acidic; acidic species are particularly aggressive to the corrosion of zinc coatings. When zinc is in contact with acidic foods and beverages, it is converted to zinc salts, which are readily absorbed by the body. Excessive levels of these salts can cause minor sickness in humans, though few illnesses have been reported when galvanized containers were used to store an acidic-based juice. However, this situation is the same as any other where galvanized steel would be in contact with an acidic environment. Zinc coatings do not perform well in highly acidic environments and should not be used.

Oftentimes, food is stored in containers made of plastic or other materials, so direct contact between food and galvanized steel never occurs. In these situations, galvanized steel is a very suitable application. Documented applications of this include bread cooling racks and pallet racks in a freezer. Galvanized steel has also been used as a coating for countertops in restaurants and bars in Europe and the United States.

Galvanized steel performs very well in food applications mainly because they are located inside and sheltered from normal atmospheric exposure. These sheltered conditions promote maximum service life for galvanized steel. Therefore, galvanized steel is a very safe and effective way to provide corrosion protection in environments where there is food.

So, where is galvanized steel used in food production operations? There are two primary and distinct areas, for the structural supports of a building, such as a bakery or slaughterhouse, and for trays, racks, conveyor, freezers, refrigerators, and counter-tops in direct contact with the food. Qualifying all of this discussion is the fact zinc is a necessary part of our RDA, approximately 15 mg should be a part of your daily intake.


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Comments

Heath Watd

I have galvanized metal protecting my grill burners from dripping. The plates sit directly over burners but are not in direct contact with the food. Is there any danger in this? Thanks im advance.

Alana Hochstein (AGA)

Hi Heath, It is unlikely the drip tray will be exposed to: (1) short term temps above 450F, (2) long term to temperatures above 392 F, (3) direct flames. Therefore, it can be a suitable application if acidic foods are avoided.

RAZIEH

Hi I want to Know that if a galvanize be painted or coated with lacquer or lamination, can be safe for food can? will be safe? Thanks

(AGA)

Hi Razieh, If the galvanizing is covered with a lacquer or lamination, then the food will no longer be in direct contact with the galvanized coating until the lacquer or laminate coating has worn or become damaged. For questions regarding food in contact with lacquer or lamination, please the contact respective manufacturer.

Jennifer

I want to use galvanized wash basins for washing dishes and a galvanzied water pitcher for filling the wash basin and watering indoor plants. Is there a risk of toxicity in doing this? I would like to decrease use of plastics in my every day life and hope to replace it in many areas by using galvanized. Thanks.

Ramees

In most of the oven toaster grill appliances, inside cavity is made up of galvanized steel. Doesn’t it cause any harm as the same is exposed to temperatures to the tune of 230 deg C ?

(AGA)

Hi Jennifer, The coating is made from zinc which is naturally found in soil and this application will not harm the plants.

(AGA)

Hi Ramees. No, galvanized metal can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C).

Lou

Hi I have built a cold smoking unit out of a square piece of galv tubing. It works by heating up (burning) wood chips in the galv tubing and backdrafting the smoke into a chamber using a small air pump. I have read various articles that say when galv is being heated it releases toxic fumes it is not safe to consume food that has been smoked using this method. For this reason I have not used it as yet. what is your opinion?

Alana Hochstein (AGA)

Hi Lou, Hot-dip galvanized metal can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Overexposure to zinc or zinc oxide in fumes can cause metal fume fever, which causes temporary flu-like symptoms but is not known to cause permanent issue. Zinc metal should be avoided in contact with acidic foods.

Tara

I have picked up galvanized tubs ( for pasta salad) and galvanized serving trays for veggie and cheese trays for our wedding! Is it safe to put food into it or is there something we can get to put in side of it? Also would fruit be safe in it?

Alana Hochstein (AGA) (AGA)

Hi Tara, As mentioned in the article, acidic foods (fruit, some cheeses, etc.) should not come in contact with galvanized steel according the the U.S. Food & Drug Administration. Non acidic foods are ok in contact with galvanized steel.

Brian

Hi, just picked up some tables that are wrapped in galv. I intend to use these for pizza pep, mainly stretching the dough. Seems like this should be ok but thought I'd ask to confirm. Also is galv just a coating that could be sanded off? Thanks for the help.

Tami

We are having an open house. We have 2 galvanized drinking containers. We were going to use for lemonade and tea. Is this ok?

(AGA)

Hi Brian, Bread dough is slightly acidic, but the food will be in contact for a very short amount of time. The galvanized coating layers are harder than the base steel -- if the hot-dip galvanized coating is removed, then bare steel will be exposed instead. Hi Tami, Highly acidic foods such as lemonade and most teas should not come in contact with galvanized steel according the the U.S. Food & Drug Administration.

(AGA)

Hi Tami, Highly acidic foods such as lemonade and most teas should not come in contact with galvanized steel according the the U.S. Food & Drug Administration.

Meghan

Hi, I just bought a galvanized steel beverage dispenser. My plan is to use it to store filtered drinking water. Is it safe to store water in the dispenser?

(AGA)

Hi Meghan, HDG is suitable for potable water. Only acidic foods should not come in contact with galvanized steel according the the U.S. Food & Drug Administration. For more information: https://galvanizeit.org/hot-dip-galvanizing/how-long-does-hdg-last/in-water

Joseph Madden

Would burning charcoal on a piece of sheet metal cause any problems?

Emily

I'm wondering about long term storage. I have a bunch of wheat that I'm keeping in my basement. There are galv steel buckets that are advertised for pet food storage or seeds, etc. Is there something different about pet standards vs people food standards? Is it safe to store my wheat in galv steel buckets?

(AGA)

Hi Joseph, Hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Typically, temperature of burning coals can range above these temperatures.

(AGA)

Hi Emily, As mentioned in the article, acidic foods should not come in contact with galvanized steel according the the U.S. Food & Drug Administration. Non acidic foods and dry foods are ok in contact with galvanized steel.

Kechia

I brought some galvanized drink dispensers and I plan to use then to store liquid laundry detergent. Are these safe to use for laundry detergent?

(AGA)

Hi Kechia, Galvanized steel can be used to store many chemicals of moderate pH. The contact of detergent with galvanized steel may not cause harm, but check the container periodically in case you a working with a very basic (high pH) laundry detergent that would cause significant wear of the coating (and eventual rusting) over time. For more detailed information: https://galvanizeit.org/hot-dip-galvanizing/how-long-does-hdg-last/in-chemical-solutions

Arash

For growing microgreens indoor, I want to make trays with the galvanized sheet. In fact, I will fill the trays with potting soil and grow broccoli, wheatgrass and etc. I concern about toxicity with zinc because my potting soil is a bit acidic. What is your opinion? Also, due to the permanent moisture, will NOT it rust during the time? (I only access to cold-galvanized sheets) Best Regards

(AGA)

Hi Arash, Zinc is commonly used in agriculture projects, and is not typically harmful to the plants and soil. For more information, see our website and white paper on hot-dip galvanizing's contribution to Zinc levels in the soil: https://galvanizeit.org/hot-dip-galvanizing/what-is-zinc/zinc-and-the-environment Performance and longevity of the galvanized coating will depend on the soil properties. For more information on how to determine performance in soil, see the following page on our website: https://galvanizeit.org/hot-dip-galvanizing/how-long-does-hdg-last/in-soil

Razieh

Hi Christine Kleen, I am Razieh. could you please send me a standard for your opinion about non-acidic and dry food that prove laminate or epoxy phenolice is safe for cans food (body and easy open end)?

(AGA)

Hi Razieh, Here at the American Galvanizers Association, we only deal in batch hot-dip galvanized coatings. Please contact the coating manufacturers directly or the FDA for food safety information on these coatings.

Brad

I am building an oven is galvanize sheet metal ok to use to build the oven Plse lmk building today

(AGA)

Hi Brad, Hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Typically, temperature of burning coals or direct flames can range above these temperatures. As mentioned in the article, acidic foods should not come in contact with galvanized steel according the the U.S. Food & Drug Administration. Non acidic foods are ok in contact with galvanized steel.

Jane Joseph

Greetings Can I bake cakes in a galvanized cake pan

(AGA)

Hi Jane, most cake batters are slightly acidic, and acidic foods should not come in contact with galvanized steel according the the U.S. Food & Drug Administration.

Enid

I bought a huge antipasto round flat "lazy susan" type turntable that has wood around the edges and the entire center portion is made of a thin steel that doesn't seem to be coated...made in India. I will be putting salami, ham, other cold cuts, many cheeses, vegetables, fruits, nuts, crackers and other foods directly on the metal for the antipasto. Is it okay to do this with these food items mentioned or can the foods become toxic or somewhat harmful??

(AGA)

Hi Enid, if the material is galvanized, then it should not come into contact with acidic foods such as many antipasto foods (fruits, some cured meats, etc.). Please contact the US Food and Drug Administration directly for information on food in contact with bare steel or other metals.

Gloria Muleady

Hello, I just bought a three tiered galvazine tray. Is it safe to put lettuce/kale/cabbage and or other greens directly on it? Thanks, Gloria

(AGA)

Hi Gloria, Yes, only acidic foods should be avoided in contact.

Paul

Hi, I make wine and the galvanized steel wire I use to lift the floating lids looks highly corroded. The wire was left inside the wine vat but not in direct contact with my wine. There is a strong odour but I don't know if the wine is now safe to drink, any ideas?

(AGA)

Hi Paul, Galvanized steel is not recommended in direct contact with acidic food/drink such as wine. If the galvanized wire is rusting (red rust), then the coating has likely been consumed (replacement or change of material required).

tim

so it's not ok to boil water to make instant gravy ?

Jon Meyers

I am building a home smoker out of an old ice box which is 24 x 48 inches tall. The metal is galvanized and in excellent condition. I will use stainless steel oven racks to place the meat on, and the propane flame will be at least 10 inches from the walls of the smoker. Temperatures used will routinely not rise above 300 F. Acidic juices from cooking will splatter on the sidewalls of the box, but will not make contact with food. Is there any risk in using this re-purposed galvanized kitchen item from yesterday in a new incarnation as a home smoker? I imagine that the entire inside of the smoker will soon be covered with a burnt patina like a cast iron pan very soon.

(AGA)

Tim Hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Often times heating of items on a stove can reach 600 F or more. Jon, If the hot dip galvanizing is not in direct contact with the stainless steel, and does not come into contact with acidic juices, and is not heated regularly above 392F, then this could potentially be suitable.

Carol Justice

I have salt shakers. Is it safe to use for salt and pepper. They are galvanized and no lineing.

George

I get that acidic food should not be consumed after being in contact with galvanized steel, but how does the steel fair. I’m considering getting a table with galvanized legs and under shelf at a pizza restaurant. If sauce gets on the legs occasionally (assume there for a day) will that damage the finish?

aaro bills

My name is Mr Aaron Bills. I will like to purchase Fruits Cup Dispensers? What are the prices including tax? These are going to be picked up from your store location when they're ready for pick up. Does that affect the pricing? Please advise. Regards. Aaron Bills. Aaron's $ Wife Ltd 13425 Wyandotte St. North Hollywood, CA 91605

(AGA)

Carol, Yes salt and pepper in the absence of moisture can be used in contact with galvanized steel. George, Occasional contact with most food is not going to rapidly damage the galvanized coating. Depending on the acidity and length of time it remains it could also darken the surface. You can clean the galvanized steel according to the instructions on our site, but be aware that scrubbing and cleaning products can potentially alter the appearance (make it dull). Aaron, We do not sell fruit cup dispensers - we only deal in the processing and performance of batch hot-dip galvanized steel. Please contact the seller of the product you wish to buy directly.

Kim T H

We builded garden boxes with galvanized materials to grow our vegetables. Is it safe? Should I use any heavy landscaping plastic material to protect the soil? Thank you

daniel

Good day I welded an estructure for outdoors cooking, kind of a rottisserie of 6 feet tall, idea is to hang larger pieces of meat (ribs, legs) and roast them using fire placed on the ground. Would zinc gases contaminate the food?

(AGA)

Hi Kim, Zinc is commonly used in agriculture projects, and is not typically harmful to the plants and soil. For more information, see our website and white paper on hot-dip galvanizing's contribution to Zinc levels in the soil: https://galvanizeit.org/hot-dip-galvanizing/what-is-zinc/zinc-and-the-environment Performance and longevity of the galvanized coating will depend on the soil properties.

(AGA)

Daniel, hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Typically, temperature of cooking fires can range above these temperatures. Galvanized material should not come into contact with acidic foods.

Donna

I am using galvanized trays for a shower. Is it okay to put food such as cookies, sandwiches directly on the trays or do I need to put something between the tray and the food?

(AGA)

Hi Donna, The FDA advises only acidic foods should not come into contact with galvanized steel, and the FDA has information on their website about what foods are/are not acidic. However, these foods will only be in contact for a very short time.

Connor

Hi I use a galvanised steel bin as a smoker for meat at about 330F, will this cause issues? Usually smoking for several hours.

(AGA)

Hi Connor, Hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. If the hot dip galvanizing is not in direct contact with acidic foods, and is not heated regularly above 392F, then this application may be suitable.

Roger

This article is very helpful. I think I know the answer to my question, but would value your feedback. I am building a solar drying machine for developing countries. It will be used to dry fruits and vegetables. Galvanized sheet metal would be the perfect material to use inside the cabinet where the food is dried. It would only be used in the walls of the cabinet, so the food would not be in direct contact with it. I plan to use a different material for the shelves in which the food will actually sit. This should be fine. Correct? What do you think?

(AGA)

Hi Roger, Yes, as long as there is no direct contact and temperatures are below 390F.

Alex Leitao

Hi, i am in the process of builder a screw conveyor just to transport ICE cubes from an industrial ice maker to a freezer room, will it be ok to used galvanized steel will it last 3 to 5 years? Or should we rather build it out of stainless steel witch costs 3 times more?? Thank you

Christine

My son made a bin for me out of galvanized metal to keep cooking utensils in, like spatulas, knives, wooden spoons,etc. and a second one for flatware (forks knives spoons) is it safe to store these items in galvanized containers and then use to eat with?

(AGA)

Alex, Hot-dip galvanized steel is often used in contact with potable (drinking) water to provide long term corrosion resistance. It is also safe to be in contact. Christine, Yes, it is only a concern if acidic foods will be in direct contact with the galvanizing.

Devin

Hi I’m building a food truck and want to place galvanized steel wall panels in the step van truck would this be a hazard for preparing foods on stainless steel tables inside the truck. The truck will be a little warm continuously because of cooking equipment and will this be harmful or emit toxic gases because of the warm environment. The food will not be prepared on the galvanized steel only on the stainless steel prep tables but the walls will be layered with galvanized steel sheets

Lisa

Hi, is it safe to grow mushrooms in gal steel piping? The substrate will be paper pellets and lime water. (I'm looking for a plastic free growing container alternative.)

Lizette

Is it safe to bake rusks in lead-free galvanized pan steel?

Carol

Bought a galvanized serving plate with a glass dome cover. I want to use this to display cookies on my counter for easy access. It says not to put food directly on the metal. I can do that. Would it be a problem if the cookies / cakes touch the 2 inch galvanized sides of the platter? Just want to be extra safe since grandkids will be eating the food.

Tammy

I want to use a galvanized tub as a bird bath; but I have read several articles where zinc would leach into the water and would be toxic to birds. I also read that hummingbird feeders with zinc bases are toxic to the birds. Is this a possibility with birds? Thank you for your help.

Ruth Mikkelsen

I have an antique bread making pan that has rusted over the years. I have taken all the rust off with a product called Iron Out, which leaves it rust free. I'd like to use it again, but uncertain whether or not it's safe. I don't really want to paint it because it's probably not okay to have bread made in a painted bowl. What's your take on this? Could I just use it with the few rust spots in it if I scrub them before using it? Thanks! Plus, I do not use salt in my bread.

(AGA)

Devin, The Food and Drug Administration (FDA) only recommends galvanized steel be avoided in direct contact with acidic foods. Warm temps inside a van are not at a temperature known to emit harmful levels of zinc oxide fumes. Lisa, The Food and Drug Administration (FDA) states galvanized steel should be avoided in contact with acidic foods. Hydrated lime (brick’s lime) and mushrooms tend to be alkaline. Lizette, Acidic ingredients should be avoided with galvanized steel. Carol, The Food and Drug Administration (FDA) states galvanized steel should be avoided in direct contact with acidic foods such as cookies. Ruth, We only deal in batch hot-dip galvanized steel. Please contact the Food and Drug Administration (FDA) for safety information regarding food preparation.

Kerry Miller

I recently bought a "Galvanized Serving Plate with a Glass Dome Cover. I opened up a large napkin and put it on the bottom and it cover the sides. I put cookies on top of the napkin but when I ate one ... oh my gosh I got a horrible metal taste in my mouth. ...and it even made the fillings in my teeth hurt??? The cookies didn't touch the metal directly at all! Is there any way I can seal off the galvanized serving plate so I can put food in it? It says it's from China so I'm almost scared to use it now!!!!! Any advice would be greatly appreciated. Thank You! Kerry

(AGA)

Hi Kerry, Galvanized steel is safe in direct contact with non-acidic foods. We are not aware of any reaction or situation that would cause the experience you described.

Randy Brauckman

I have seen the comments concerning temps that galvanized metal can take short and long term. My question revolves around a grill I am looking at where the bottom and 3 side walls are galvanized. The grate itself is not, so food would not be in direct contact with the galvanized metal. My concern is with the hot coals in the firebox itself. Knowing charcoal will exceed 390deg F and depending on what you are cooking, hour or two on that surface. Will that amount of exposure to the galvanized firebox create a health hazard from a cooking standpoint of fumes leaching into the food. There seem to be several manufactures selling galvanized grills and the government hasn't jumped in yet. Just want to make sure it is safe to use. Wanting to get something that will battle coastal elements better that regular metal and not the expense of stainless. Thanks

(AGA)

Hi Randy, Zinc oxide fumes can become an issue closer to the melting point (750+F). If the hot dip galvanizing is not in direct contact with acidic foods, and is not heated regularly above 392F, then this application may be suitable.

Rosalie

some countertop convection ovens are made from galvanized steel Are they safe to use . very concern about this matter.

Nikos

Hi, Can I store virgin olive oil in a galvanized steel container (like the red ones used to store gasoline)? Thanks for your help

(AGA)

Hi Nikos, Hot-dip galvanizing stands up well to lubricants of mineral origin which are stable and free from acidity, but those containing animal fats and/or vegetable oils (such as olive oil) should be avoided due to the presence fatty acids which are corrosive to zinc.

Aalok

I bought an OTG with galvanized steel inner chamber. I'm concerned that if I bake in it, the fumes will contaminate the food. My questions are: (i) Is aluminium coated steel safer than zinc coated steel? (ii) Can I apply a layer of mud on the inside to stop the fumes from leeching into food?

(AGA)

Aalok, Galvanized steel does not begin to fume until near it's melting point at 787F. In long-term, continuous exposure, the recommended maximum temperature for galvanizing is 392 F (200 C). However, for short-term usage, (periods of less than two hours at a time), the recommended maximum service temperature for galvanized steel is approximately 660 F (350 C).

(AGA)

Aalok, Galvanized steel does not begin to fume until near it's melting point at 787F. In long-term, continuous exposure, the recommended maximum temperature for galvanizing is 392 F (200 C). However, for short-term usage, (periods of less than two hours at a time), the recommended maximum service temperature for galvanized steel is approximately 660 F (350 C).

GR

Hi, building a wood fired pizza oven using two nesting Behrens galvanized trashcans with rockwool in between. Temp goes to 900 F. Pizza is on stone and does not touch metal. Even if integrity of zinc coating goes, it should go up with smoke and should be minimal after a few firings. Any issues with this application? Thanks for all the great info.

(AGA)

Hello GR, The maximum recommended operating temperature for galvanized steel is 390 F in order to provide coating protection without causing the pure-zinc layer on the top to peel off. Zinc oxide fumes can become an issue or concern during deterioration of the coating at high temps, but are typically released closer to zinc's melting point (~785 F).

Jean

Hi there if i make a braai grid out of mild steel and got it galvanized with that be ok for braai meats? Can one galvanize braai insert or braai aswel Thanks in advance

(AGA)

Hello Jean, Galvanized material is ok in contact with food except for acidic foods. The concern is with temperature -- hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Temperature of cooking fires and flames may range above these temperatures.

Anne

Hi, Alana! I have a 10-gallon lidded galvanized steel can that I would like to use for flour storage. I will line it with a food-safe (jumbo Ziploc) plastic bag, and it will remain at room temperature. Is this safe? Thank you, and have a great day.

Nipun

I have a charcoal chimney made out of galvanised steel to burn my charcoal for the barbeque. I use it only one or twice a month. I am concerned whether it may produce toxic zinc fumes. Thanks!

(AGA)

Hello Nipun, Hot-dip galvanized steel can withstand long-term, continuous exposure up to 392 F (200 C), or short-term usage of approximately 660 F (350 C), and temperatures above these should be avoided to ensure integrity of the coating. Typically, temperature of burning coals or direct flames can range above these temperatures, but as long as the galvanized steel is not directly near the burning coals and the flue temperature during use can be kept below 660F then damage to the coating can be likely avoided. Zinc fuming typically begins near the melting point of zinc (750+F).

Trevor

How long could honey (acidic) be stored in a galvanized iron container before it reacts with zinc in galvanised iron ? I'm aware this shouldn't be done (?) but intrigued, as this was apparently done in days gone by. Honey in galvanized iron honey extractors is not in contact with the galvanised surface for very long so it shouldn't be affected ?

(AGA)

Hi Trevor, The US Food and Drug Administration does not recommend acidic foods such as honey come into contact with galvanized steel for any amount of time.

Yvonne

Hello, I just purchased galvanized hardware cloth to make cages around my garden boxes. The vegetables on the sides of the boxes all come in contact with the metal, and will continue to do so as they grow and get bigger. When I was bending the material to form the cages, I noticed a fine white dust coming off when the cages scraped up against one another, or there was a residue on my hands - very fine dust. My questions are: Is it okay for all my vegetables to be growing up directly in contact with the hardware cloth? If the dust created when bending the material fell into the soil is that ok, or did that make the soil toxic? Are there certain vegetables that should not be grown in these conditions - ie. tomatoes because they are considered acidic? Is the dust coming off a normal process of galvanized materials, or does it mean that the hardware cloth I purchased not good quality? THANK YOU!!!!

(AGA)

Hello Yvonne, Galvanized steel is safe in direct contact with non-acidic foods and is safe for the soil. Wet storage stain is the white/gray powdery deposit that can develop on newly galvanized articles. It may be found on nested or stacked products where moisture gets trapped between the articles restricting adequate airflow to the zinc surfaces, or when galvanized steel is exposed to rain, dew, or high humidity conditions. Wet storage stain is the visible formation of zinc oxide and zinc hydroxide on the surface of the galvanized steel. These are natural corrosion products and it is not necessary to remove or clean them from the galvanizing.

Jerri

I plan on storing potatoes in a 5 gallon galvanized can I purchased from our local Grange. Is it safe to consume potatoes that are stored this way? Thanks

(AGA)

Hi Jerri, Potatoes are a mildly acidic food and should be avoided in direct contact with HDG according to the US Food & Drug Administration.

(AGA)

Hi Dee, The US Food and Drug Administration does not recommend acidic foods such as honey come into contact with galvanized steel for any amount of time. If the honey does not come into contact then it is acceptable.

(AGA)

Hi Dee, The US Food and Drug Administration does not recommend acidic foods such as honey come into contact with galvanized steel for any amount of time. If the honey does not come into contact then it is acceptable.

David Perkins

I would like to store dried fish feed in galvanized trash cans. The fish will be consumed by humans. The fish feed is quite oily and I read your comment about fatty acids reacting to zinc. Any advice? Nor do I know if the feed is acidic. I am assuming that if it’s acidic yet dry, it will not react. Is that correct? Thank you.

(AGA)

Hello David, Yes, avoid storage involving direct contact of materials containing animal fats which are corrosive to zinc. A liner can be used.

Tina

I was recently gifted an antique, galvanized steel honey extractor. In reading your above comment above to Dee(I wasn’t able to find her question), I see that honey shouldn’t come in contact with the galvanized steel in any way. Do you feel that adding a coating (or 3) of a food safe paint will sufficiently protect the honey from contamination from the metal?

(AGA)

Hi Tina, Food grade paint can be used as a barrier to prevent contact with HDG.

(AGA)

Hi Tina, Food grade paint can be used as a barrier to prevent contact with HDG.

Martin

Our club has a large BBQ (8ft x 1 ft), with new grills (1 for the top and 1 for the coal bed), of 1" square galvanised mild-steel. Cooked directly on the BBQ grill top will typically be "mixed grill (burgers, sausages, chops, steaks, ribs etc.) What - if any - are the health implications of: 1. the direct contact of the food on the heated galvanised mild steel. 2. the smoke fumes as the galvanised steel heats up, 3. the food absorbing said fumes? 4 Is there any need for a prolonged 'pre-burn' before we put any food on it? 5. Also, if any issues are identified, do they dissipate or increase with repeated use of the BBQ? Reading this thread I would say not - but I'm not an expert, which is why I'm asking...

(AGA)

Hi Martin, Zinc oxide fumes become an issue closer to the melting point (750+F). If the hot dip galvanizing is not in direct contact with acidic foods, and is not heated regularly above 392F, then this application can be suitable.

Andrea

I want to use galvanized steel mesh in my oven to dehydrate food at 140-200’F. I would use parchment paper between the food and the mesh, would that be ok or would it still be toxic?

(AGA)

Hi Andrea, If the hot-dip galvanizing is not in direct contact with acidic foods, and is not heated regularly above 392F, then this application is suitable.

Quan

Hello, I have a galvanized pot which is used from time to time to cook rice and beans. Is this safe? I am being exposed to the harmful materials released from the galvanized pot? Also could the beans be acidic and part of the problem? Thank you.

Stephanie

I've been researching for days now about toaster ovens. I just recently learned some use non-stick on the inside which i'm trying to avoid. Then i read that some of them have galvanized steel on the inside. Now i'm reading from this page that galvanized steel isn't good? Normally I cook foods in my oven between 400-450 degrees Fahrenheit. If i do this, am i risking health concerns of poisonous fumes leaching into my food? my food wouldn't be directly touching the material, but would the high heat be of concern? What kind of safe material should i be looking for when purchasing a toaster oven? Thank you very much!

Honey S.

I Purchased a set a three galvanize steel canisters online used from an individual who use them as decor purposes only. The bottom of the canister say that it’s not food safe and for decorative use only. I purchased these canisters to use for sugar and teabags and maybe coffee. Are these galvanized canister safe for that purpose?

Annette Mcray

Hi I am planning on using galvanized tubs to hold flavored popcorn for my wedding. We are having a popcorn bar. Is it safe to put the popcorn directly into the galvanized tubs?

(AGA)

Hi Annette, If the popcorn stays dry it will be ok. If you want to take extra precaution can line the tubs with paper or other linings.

(AGA)

Hi Honey, Galvanized canisters should not come in direct contact with acidic foods per the FDA. Tea and coffee are acidic when wet.

(AGA)

Hi Stephanie, If the galvanizing does not directly contact acidic foods and it is below the temperature recommendations listed in the article, then it is suitable for use. If you prefer, you can always use foil or other baking sheets to prevent direct contact with the galvanizing if you aren’t sure about a food’s acidity.

(AGA)

Hello Quan, yes, galvanized steel should not come in direct contact with acidic foods (such as beans) per the FDA.

Enggpro

Very interesting details you have remarked, appreciate it for posting.

RBnSC

We plan to cook/fry food for a few events and are looking for a hot oil storage temporary solution. We cannot leave the oil in the cooker due to not having long term access the area after the cook. We wanted to put the hot oil in galvanized steel buckets/pails with lids long enough for it to cool. Then pour the oil back into the original container to use again. We’d be frying fries so the oil should last a few cooks. My question is, will the cooking oil react to the galvanized buckets negatively therefore making the oil unusable for cooking again. Thanks.

(AGA)

Hello RBnSC, The U.S. Department of Health and Human Services' 1997 Food Code, Section 4-101.15 Galvanized Metal, Use Limitation, reads: "Galvanized metal may not be used for utensils or food contact surfaces of equipment that are used in contact with acidic food." Non-acidic cooking oils such as castor oil are not known to react negatively with HDG surfaces.

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BONNIE BOURG

Hi, I have an antique galvanized bread maker. It's a #4 Universal Bread Maker by Landers and Frary & Clark 1904. Is it safe to make bread in it?

(AGA)

Hello Bonnie, The FDA recommends that acidic foods do not come into direct contact with hot-dip galvanized surfaces. So, you should not encounter any safety issues if you use nonacidic dough with your bread maker.

Paul

I mistakenly cleaned a toaster oven drip tray with Easy Off, which damaged the drip tray's zinc coating. It is darkened and in spots white rust appeared and has lost its luster. I removed the corrosion, cleaned it, and applied vinegar. Is this okay to keep using? It never comes in contact with food, and simply lives at the bottom of the toaster oven, but I don't know if the process of damaging the galvanized steel means the coating now presents a risk. Thanks for any insights!

(AGA)

Hi Paul, First, it’s important to know that frequent cleaning with commercial cleaners is not recommended for galvanizing. Cleaning chemicals are known to remove the luster, but in moderation that won’t negatively affect the coating. However, when cleaning, try not to let chemicals sit for a very long time as this actually can thin/damage the coating. After any cleaning, rinse very thoroughly (recommended twice) then fully dry before returning to service. All that being said, it is okay to keep using your toaster oven. For short-term (toasting) usage, temperatures required to raise reasonable concerns are higher than the capability of most toaster ovens (>660° F). Temperatures between 490°-660° F are not recommended, as they can accelerate flaking, cracking etc.

Jason

I am looking to use a Galvanized serving tray to serve BBQ'd meats on. Would this be a safe option?

(AGA)

Hello Jason, BBQ meat should not be in direct contact with the galvanized surface as animal fats contain fatty acids and are known to be corrosive to zinc. You could use a liner to prevent direct contact.

RA

Hello .. is it ok to use airfryer grill that has interior galvanized metal and max cooking temp reaches 265c? the galvanized part doest come into contat with food directly but what about fumes ? thank you very much

(AGA)

Hello RA, Your appliance is safe to use at elevated temperatures, but excessive heat may damage the coating. When considering short-term usage, that is, periods of less than two hours at a time or one-time temperature excursions for less than twenty-four hours, the recommended maximum service temperature for galvanized steel to avoid damage is approximately 660° F (350° C). Most galvanized tray components or galvanized grill/toaster/smoker elements will not reach temperatures of concern. See our article - HDG in Extreme Temperatures for more information.

Josh Rubinstein

Hello, I have replaced some rusted-out support structures with zinc-plated brackets in my propane BBQ grill. None of these will be touching food. The temp of the grill usually maxes out at 300 - 350 F, but can (rarely) go as high as 500 F. One of these zinc-plated brackets is exposed to direct flame, the rest are not. Is there any risk of toxic fumes being released into the air for the cook (me) or into the food. Thanks.

(AGA)

Hi Josh, while excessive heat may damage the coating, most galvanized tray components or galvanized grill/toaster/smoker elements will not reach temperatures of concern. The recommended maximum service temperature for galvanized steel to avoid damage is approximately 660° F (350° C) for short-term usage so your grill is safe to usewithin those temperature ranges. You can read more in our article - HDG in Extreme Temperatures.

Gil

Thanks. This article was very helpful!

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