1. The content of alloying elements.
Generally speaking steel does not rust easily with chromium content of 10.5%. The higher the content of chromium and nickel, the better the corrosion resistance, such as 304 material nickel content in 8-10%, chromium content of 18-20%, such stainless steel in general is not rust.
2, the smelting process of the production enterprise will also affect the corrosion resistance of stainless steel.
Smelting technology is good, advanced equipment, advanced process of large stainless steel plant whether in the control of alloy elements, impurities removal, billet cooling temperature control can be guaranteed, so the product quality is stable and reliable, good internal quality, not easy to rust. On the contrary, some small steel equipment is backward, backward process, smelting process, impurities can not be removed, the production of products will inevitably rust.
3, the external environment, the climate is dry and ventilated environment is not easy to rust.
And the air humidity is large, continuous rainy weather, or the environment with large acidity in the air is easy to rust. 304 stainless steel material, if the surrounding environment is too poor will rust.
Post time: 03-03-22