Clean off the galvanized iron. If you have a large piece of metal, pressure-wash it to remove as many rust flakes as possible. If the item is smaller, rinse it with a garden hose. Once the item is rinsed clean, wipe it down with a damp rag that has three drops of liquid detergent on it. This will remove dust, dirt and grime so that the rusted areas are easier to spot.

Mix up your oxalic acid. Oxalic acid, also called wood bleach, comes in a powdered form and generally is mixed with water to form a liquid. To treat rust on galvanized iron, however, measure several cups of the powder into the plastic bucket, then add water a cup at a time until a thick paste has formed that can be spread, but that will not run. Wear your gloves and goggles during this step and from this time forward.

Spread the oxalic acid paste on the rust spots. Cover them completely, and allow the paste to sit on the spots for five to 10 minutes. You may see the rust "lifting" off the metal and staining the paste. Do not leave the paste on the metal for more than 10 minutes.

Rinse off the wood bleach paste. Use the pressure washer or the garden hose to thoroughly rinse off the area. Once it is clear, tackle any remnants of rust or rust stains with the wire brush until they are completely gone.

Clean the galvanized metal thoroughly. Use the pressure washer or hose and the cleaning rags with liquid detergent to wipe down the entire area and make sure that all oxalic acid residue and rust residue is completely gone. Dry the metal rather than allow it to air dry to prevent flash rust formation.

Fifteen years ago, my builder installed a galvanized steel sheeting drip pan beneath my washer and dryer in my laundry room. It has developed large blotchy rust stains in some places. I am about to have a new washer and dryer installed tomorrow and would like to be able to clean up the drip pan first.

Does anyone know what I should use to remove the rust? Thanks! --anonymous

how much galvanized steel is used in construction purposes?

what is the difference between the hot dip galvanize and galvanized sheet?

We are pipe galvanizers. After galvanizing we directly dip the pipe in a solution of sodium dicromate+ 0.1 percent sulfuric acid. After the pipe is taken out from the passivation solution, there are yellow marks on the pipe. How do we remove the marks and are we doing passivation properly.

I agree with you about the degree of galvanising. would you please let me know what is the difference among class A, Class B and Class C? I mean the weight range for the above three.

Robert Galvin is the man who invented Galvinized metal. He discovered it when he dropped a spoon in a tub of liquid zinc (originally for the mayor for reasons unknown) and found that it didn't rust like the rest. He then made a note of them and nicknamed the spoon the "Galvinized spoon".

What is the thermal conductivity of typical galvanized steel? A quick answer would be much appreciated, thank you.

Do I need to make adjustments to my weld schedule if I am resistance spot welding Electrogalvanized vs Hot Dipped galvanized sheet metal?

who invented this method?

Most galvanized steel is coated with a passivation chemical to prevent "white rust". A common passivation chemical used is Hexavalent Chromium; a very harmful carcinogen when ingested, absorbed by the skin, or inhaled. Welding and other heating of galvanized steel can allow the passivation chemical to be liberated and thereby create a health concern. -- Jerry Lavoie

Can galvanized steel be forged safely?

galvinised steel can be welded as i welded a butt arch joint at school the other day.

If galvanized steel were used for a laptop lock, could a thief easily cut through it compared to a bike U-lock?

can galvanised steel be painted?

galvanized bolts and nuts can be used in electrical termination ? where we have to maintaine low joint resistance ie good bonding

Nathan it depends on your steel thickness to the amount of zinc coating needed to that paticular part. minimum thickness and galvanized coatings are measured in mils

You cannot weld galvanized steel. you must first strip it down to the bare metal and then regalvanize it.

Depending on the type of acids and degreaser your galvanizer is using will vary on the types of fumes released.

Steel is not magnetized during the galvanizing process.

Using galvanize grill screens are safe as long as you do not heat the screen over 730 degrees.

Galvaning is measured in mils not G-000.And it depends on your steel thickness and chemistry of the steel to the amount of zinc that part would pick up.

Galvaneal Coating (A) - Coatings on hot-dipped galvanized steels processed to convert the coating completely to zinc-iron alloys; dull gray in appearance, have no spangle, and after proper preparation, are well suited for painting.so this goes over the galvanized coating.

Does no one answer these questions? and if so, where?

If heated, will galvanized steel release harmful toxins?

Would galvanised steel, electroplated steel or steel painted with anti-rust paint be the best type of steel to use for ship building?

I'm disappointed. I see lots of questions but few answers. I was particularly interested in knowing if galvanization on metal was a health hazard such as the question of whether a galvanized wire mesh could be used as a grill on the barbecue?

just want to read responses to above postings

As per code requirements, I am installing a heat shield on combustible walls and ceiling around my woodstove. They recommend sheet metal. I have several 4' X 8' sheets of good heavy galvanized sheet metal I would like to use. I expect temps. somewhere around 300 / 350 degrees max. or lower. Is there any fuming I should be concerned with?

I have a galvanized chimney that goes from my gas furnace to my chimney and out in the attic.

Sometimes rain comes down the chimney and shows a white powder on the galvanized in the attic area. I think this is corrosion. I was told it is not and would never corrode through. Is this true, or should I be concerned. Thank you,

Charlie

what's galvanized steel's SRI? (Reflectivity and emissivity)?

Galvanized pipes are available in Above ground pipes up to what size?

can galvanized steel be welded?

I used a galvanized garbage can to season my Dutch Oven. I got the internal temp. up to 400 degrees F. Someone mentioned that I might have gotten fumes from the zinc in the oven. From my understanding, zinc will not turn to gas until it gets to over 900 degrees C. My question is: Is seasoning my Dutch oven this way safe? Also, is it safe to cook a turkey in a galvanized garbage can?

anon16792 - Galvanize is just a coating. So the strength goes to the steel, not the _galvanized_ steel. There are different strengths: tensile, yield, compression, shear. Strength depends on whether the steel is hardened, annealed... When you talk about strength you have to specify all those elements, plus the material itself, if it is carbon steel, stainless steel, alloy steel....

anon16449 - yes, galvanized steel attracts magnets.

what is the shaer stress of galvanized steel

Does galvanized steel attract magnets?

is galvanized steel worth more than original steel?

galvanization can affect the stainless steel when installed together?

What is the difference between galvanized steel, perma-gold, electro-galvanized, pregalvanized and hot dip galvanized? If the difference is the thickness of the zinc galvanized finishes, what is the service life for each of these finishes?

what are performance factors, safety, purpose and durability of galvanized steel

What is the chemical makeup of galvanized steel?

If you dropped a burning charcoal red ember on Galvanized Steel, is there anything harmful in the make up of Galvanized Steel that could release toxic fumes? Would it be able to withstand the heat from a burning charcoal red ember?

What is the difference between Galvanized steel and Galvaneal Steel?

I have a gas log fireplace non vented. I want to place a thin galvanized plate above fire about 15". Will it get too hot?

Can galvanized steel be welded?

I saw on another website that the thickness is measured ranging from G-30 to G-235. How thick is that, and when is the thicker coating used?

Can galvanized steel (Roofing) be soldered? thank you, tom rosdick

Can a galvanized trash can be used to cook food by using the trash can as a type of outdoor oven. I've read an article about cooking turkeys in a trash can. The article said to burn the trash can before using it to cook.

How thick is the zinc layer of galvanized roof flashing?

Is it safe to use a galvanized wire mesh as a grill in my barbecue grill?

is it true that galvanized springs used in garage doors, are weaker than regular coated springs?

does galvanized steel give off bad fumes if it gets too hot?

is it safe to burn in a galvanized bucket, or does it make toxic fumes? does the zinc coating produce fumes, and if so are they safe.

is galvanized steel magnetic?

Can you use galvanized steel from an air conditioning duct to make a meat smoker? Will fumes from the zinc come off in the smoke and harm you. Is there anything else in the galvanization process besides zinc that could give off fumes?