Cold-rolled profile: cold-rolled stainless steel plate 2B (rolled plate, adhesive tape, flat plate);
Characteristic board: 3. 5mm-6mm 304/2b，3 16L/2b；
Thickness: cold rolled 2b (0.1-6.0mm); Surface: 2B smooth surface, bar; 8K mirror; Wire drawing and grinding; Snowflake sand; Stainless steel fingerprint-free board;
Decorative board: color board, titanium plated board, etched board, oil polished board (HL, No.4), 3D solid board, sandblasting board, relief board? Hot rolling section: 1 stainless steel plate hot rolling (coil plate, flat plate);
Thickness: industrial number 1( 3- 159mm) Surface: 8K mirror; Wire drawing, titanium plating and polishing; Snowflake sand; Stainless steel fingerboard.
Extended data
Development of 20 1 stainless steel
During World War II, 200 series stainless steel was successfully developed for the first time in the United States as a substitute for 300 series stainless steel. At that time, due to the war, nickel, as a strategic material, was strictly controlled by various countries concerned, and the supply of nickel in the United States was seriously insufficient. In order to solve the problem of production and supply of stainless steel in the case of serious shortage of nickel, the United States developed a new series of austenitic stainless steel with manganese instead of nickel.
After World War II, the nickel supply in the United States gradually improved. Therefore, the production of 300 series stainless steel is no longer restricted by the shortage of raw materials, so the 200 series has not been greatly developed. After several Indians who participated in the development of 200-series stainless steel returned to India, they brought back the 200-series stainless steel varieties developed by the United States from the national conditions of India's relatively rich manganese resources and lack of nickel resources.
The application of 200 series stainless steel in India is successful because it may replace 304 stainless steel in some specific applications.
Most of the 200 series stainless steels sold in China market hardly control the sulfur and carbon content according to the national standard, and manganese (and nitrogen) replaces part or all of nickel to produce austenitic stainless steel with low nickel content.
The disadvantage of this series of materials is that the chromium content below 18% is unbalanced with the low nickel content, forming ferrite. Therefore, the chromium content in 200 series stainless steel is reduced to 13.5% ~ 15%, and in some cases, it is reduced to 13% ~ 14%, and its corrosion resistance is high.
In addition, manganese and copper will reduce the re-passivation effect of deposition area and cracked corrosion area under ordinary acidic conditions in some cases. The failure rate of 200 series steel under these conditions is about 10- 100 times that of 304 stainless steel. It is often impossible to control the residual sulfur content and carbon content in these steels in production, and the materials cannot be traced back, even in material recovery.
If chromium manganese steel is not explained, it will become a dangerous mixed raw material of scrap steel, resulting in unexpectedly high manganese content in castings.
Baidu encyclopedia -20 1 stainless steel
Baidu encyclopedia -20 1 stainless steel plate