50pcs 304 stainless steel woodworking round nails

Question 1

1.Why is stainless steel also magnetic?

304 stainless steel is of austenitic stainless steel, and the austenite is partially or small converted to martensite during cold working, and the martensite is magnetic, so 304 stainless steel is non-magnetic or micro-magnetic. Specifically, Baidu can query 304 stainless steel why it contains magnetism.

Question 2

2. How to identify authentic 304 stainless steel products?

① support the detection of 304 stainless steel special detection solution, if it does not change color, it is authentic 304 stainless steel.
(2) Supports spectral analysis of chemical composition.
(3) Support smoke test and simulate actual use environment.

Question 3

3. What kinds of stainless steel are most commonly used?

(1) 201 stainless steel, suitable for use in a dry environment, easy to rust with water.
(2) 304 stainless steel, outdoor or humid environment, strong corrosion resistance and acid resistance.
(3)316 stainless steel, Mo, more corrosion resistance and pore corrosion resistance, especially suitable for seawater and chemical media.