Question: Why is the chromium content of 201 stainless steel coil not enough? The product purchased by our company has a chromium content of 14.69%, which should be 16~18% according to the national standard and American standard. The material list is also more than 14 points. Why is the manufacturer The material list is written like this?
Answer: 1. First of all, you must be clear that the 201 you purchased is produced by the steel plant. The 14.69% chromium content is already qualified for domestic 201. At present, the Cr content range of Lianzhong, the largest domestic 201 production steel plant It is 13.5-16%, so it must be up to the standard.
2. The situation you mentioned is very normal. This is also the current situation of 201 materials in China. You have to be clear. There are currently no 201 materials in China. There are only grades similar to 201 materials. It is impossible for each steel mill to follow you. The said American standard or national standard is implemented. What they implement is the industry standard of their own steel mills, such as Lianzhong's L1, similar to 201, which implements the internal standard of the enterprise, so you cannot use the international or national standard GB/T 3280 to implement Verify the composition of this material.
3. There are two types of L1, Baosteel BN1, similar to 201 in domestic production.