What are the advantages of our hardware cloth?
1. Made of low carbon steel wire. The steel wire is firm, the grid is even, the welded joints are firm, easy to unfold and not easy to break.
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2.Adopt double galvanizing process to weld first and then galvanize to ensure all welded joints are galvanized to prevent rust and corrosion and prolong service life.
If you want to learn more, please visit our website GALVANIZED HARDWARE CLOTH.
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Is galvanized metal the same as stainless steel?
Not at all. Galvanized hardware cloth is carbon steel or low alloy steel that has been welded together and then hot dip galvanized with zinc. This means they dip the mesh into a big pool of molten zinc. When the mesh comes out, the zinc cools onto it, forming a coating. The zinc reacts with the moisture and oxygen in the air, forming an oxide coating, preferentially reacting with oxygen to protect the steel from rusting. When you run out of zinc metal to react with, then the oxygen/moisture starts attacking the steel. But this is on a molecular level, so there is a lot of zinc that the moisture/oxygen has to get through first before it can rust the steel. Galvanization is a much cheaper process than stainless steel production.
Electroplated hardware cloth, where the zinc is applied via electroplating instead of hot dip galvanization, is not as robust of a protection. The zinc isn't as thick or uniformly applied to the steel mesh, so it does not protect the steel as long as it would if you had hot dip galvanized it.
Stainless steel is something like 304 or 316 alloy stainless steel, it has chromium and other additives in it that alloy with the steel and help protect it from corrosion. 316 provides better protection than 304 stainless steel, but is also more expensive. You can't see it, but a thin oxide film forms from the chromium in the steel and this protects the steel from oxidizing. If you heat the stainless steel up too high in the oven, especially for 304, or you use high acid foods in low quality stainless steel where they used less alloying elements, less Chromium, etc, then you will see pitting corrosion or corrosion at the grain boundaries. This is because the chromium either moves to the grain boundaries instead of being spread throughout the material (it got to hot), or the steel was not well alloyed (pitting corrosion due to high acid foods for a long time). These are indicators that you have poor quality stainless steel, and need to either purchase a higher quality metal or change what you're doing with it (remove the acid foods, keep it clean and dry, don't heat it so hot, etc.) Turkey fryer stockpots sold as a kit on Amazon often experience pitting corrosion soon after purchase due to poor alloying of the "stainless steel" in the pots, and possibly poor manufacturing/poor welding of the bottoms to the sides. These pits will eventually turn into holes. Not good for a container meant to cook over open fire using several pounds of hot oil.
Zinc has a lower melting point than Chromium, and is toxic to animals and people in too high of a concentration, and tends to rub off on things that touch it, so fencing is a good choice for this material. Cookware is not. Always wash your hands after handling galvanized zinc anything if you do it without gloves, especially prior to eating.
Stainless steel is significantly more expensive to produce than galvanized steel. Just compare something like fence latches. Galvanized is cheaper than stainless steel in all cases. Painted carbon steel cost is usually in the middle. Galvanized fence latches provide better protection from rusting, but don't look as pretty as painted ones. Stainless look great and have the best protection from rusting, but are more expensive to produce. Hence the price difference.
@FunClucks Wondering where you picked up your knowledge. I'm not trying to pick a fight, just wondering about your perspective. Your experience sounds different from mine. I have zero experience with stainless steel by the way.
I worked in design, construction, and maintenance of the offshore platforms. The splash zone, the area just above the still water level where the waves splashed, are extremely corrosive both because of them staying wet and the salty conditions. We found we could get extended life out of galvanized steel components like handrails and grating if we painted it. When we did a repair on grating, where it was tack welded on was painted. The difference in how fast grating corroded where the overspray coated it versus just grating was dramatic. We got with the scientists and it wasn't long before we were painting all of the galvanized steel on the platform, not just in the splash zone.
I totally agree about the pinholes in the paint, we called them holidays. A pinhole concentrates the corrosion. We tested for holidays in the paint. If any were found it called for repair painting. Pinholes or scratches exposing the bare steel underneath are not good in paint or galvanizing.
The way we could put unpainted steel structures in the salty ocean without them rusting away underwater was to use anodes. We would attach blocks of zinc to the steel so they were electronically connected. A current could flow between the zinc and steel. Since the zinc was more reactive than the steel the zinc would sacrifice itself to protect the steel. As long as we replaced those zinc anodes when they were getting used up the steel could last for many decades. You have a sacrificial anode in your water heater. Many bridges and buried pipelines are protected by anodes. Ships hulls can be.
The zinc coating with galvanizing provides this type of protection, but if you can keep the zinc protected with paint you can go a lot longer before the zinc starts sacrificing itself to protect the steel.
Is galvanized hardware cloth rust proof? I will paint it with black rustoleum paint. But if they get wet, will they rust?
Eventually, but it could take years before they rust.