Q: Why is stainless steel magnetic?
A: 304 stainless steel belongs to austenitic stainless steel. Austenite is partially or slightly transformed into martensite during cold working. Martensite is magnetic, so stainless steel is nonmagnetic or weakly magnetic.
Q: How to identify authentic stainless steel products?
A: 1. Support stainless steel special potion test, if it does not change color, it is authentic stainless steel.
2. Support chemical composition analysis and spectral analysis.
3. Support smoke test to simulate the actual use environment.
Q: What are the most commonly used stainless steels?
A: 1.SS201, suitable for use in dry environment, easy to rust in water.
2.SS304, outdoor or humid environment, strong resistance to corrosion and acid.
3.SS316, molybdenum added, more corrosion resistance, especially suitable for seawater and chemical media.