Stainless steel and aluminum refer to the material of butterfly valve. Stainless steel butterfly valve is better than aluminum butterfly valve because of its strength and anti-corrosion performance, and can generally be used in conventional and acidic and alkaline environments. Aluminum butterfly valves have poor corrosion resistance and good conduction temperature performance, so aluminum is generally used in anti-condensation butterfly valves.
The main difference between stainless steel butterfly valve and aluminum butterfly valve is the material, one uses stainless steel and the other uses aluminum alloy. Therefore, the difference between the two butterfly valves is actually the difference between two different materials. The difference between stainless steel and aluminum alloy is as follows:
Difference 1. Price
Stainless steel is expensive, aluminum alloy is cheap.
Difference 2. Hardness
Aluminum alloy has low density, but high strength, close to steel, and good plasticity; stainless steel is a nickel-chromium alloy, and its hardness is higher than that of aluminum alloy.
Difference 3, high temperature resistance.
Stainless steel can withstand high temperatures, with a melting point of 1200--1500 degrees Celsius; aluminum alloys cannot withstand too high temperatures, with a melting point of 500--800 degrees Celsius.
Difference 4, the surface treatment process
Stainless steel surface treatment includes surface brightening treatment, surface whitening treatment, and surface coloring treatment; aluminum alloy treatment includes electroplating, spraying, anodizing, etc.
Which is better, stainless steel butterfly valve or aluminum butterfly valve? Since the characteristics of aluminum alloy and stainless steel are different, they have their own advantages, so the suitable scenarios are different, and it is not easy to say which is better, as long as the right material is selected in the right place, so that the Their characteristics are fully exerted.
