202 Stainless Steel Bar Rod manufacturer   

"Grade 202 stainless steel is a type of Cr-Ni-Mn stainless with similar properties to A240/SUS 302 stainless steel. The toughness of grade 202 at low temperatures is excellent.

It is one of the most widely used precipitation hardening grades, and possesses good corrosion resistance, toughness, high harness, and strength."     

202 Stainless Steel Bar Rod Price in China ,Manufacturer of 202 Stainless Steel Bar Rod                        

The machinability of grade 202 stainless steel produces long, gummy chips. Machining can also be performed in the annealed condition. For heat treatment, the material has to be soaked at 1038°C (1900°F) for 30 min and cooled below 16°C (60°F) for full martensite transformation. The material can be welded by common fusion and resistance methods; however, this steel should not be joined using oxyacetylene welding method. The recommended filler metal is AWS E/ER630. Forging can be done by pre-soaking for 1 h at 1177°C (2150°F). Forging below 1010°C (1850°F) is not advisable  

                        
Both grades 304, as well as grade 202 stainless steel, belong to the austenitic class. This means that the microstructure of both stainless steel alloys is face-centered cubic. Since grade 304 is an alloy that falls under the 300 series stainless steel, this alloy inherits its austenitic structure primarily the inclusion of a higher content of nickel added to its alloy. On the other hand, grade 202 falls under the 200 series stainless steel. Grades that belong to the 200 series stainless steel, tend to substitute elements such as manganese and nitrogen in their chemistry, as an effective alternative for the element nickel. This being said, it is interesting to note that there still is a small inclusion of nickel content in their alloys.