420 stainless steel, 420 stainless steel is 420 "blade grade" martensitic steel, similar to Brinell high chromium steel, the earliest stainless steel. 420 has a certain degree of wear resistance and corrosion resistance, high hardness, its price is a lower class of stainless steel balls, suitable for the working environment of common requirements for stainless steel. 420 stainless steel is suitable for all kinds of precision machinery, bearings, electrical, equipment, instruments, instruments, transportation tools, household appliances and so on. It is mostly used to manufacture parts resistant to atmospheric, steam, water and oxidative acid corrosion.

Chemical Composition of 420 Stainless Steel
chemical composition	content
C	0.16～0.25
Si	≤1.00
Mn	≤1.00
Cr	12.0～14.0
Ni	≤0.75
S	≤0.03
P	≤0.04