420F stainless steel 420F Name: martensitic stainless steel Standard: AISI, ASTM Type: 420F UNS Number: S42020 

 ● 420F features and applications: 420F 420J2 stainless steel is easy to improve the cutting of steel. 



 ● 420F chemical composition ①: C C: 0.30 ~ 0.40 Manganese Mn: ≤ 1.25 Si Si: ≤ 1.00 Chromium Cr: 12.0 ~ 14.0 Ni-Ni ②: ≤ 0.50 Phosphorus P: ≤ 0.06 S S: ≥ 0.15 Mo Mo ③: ≤ 0.06 Note: ① single value unless otherwise stated herein, are the highest value; ② process for certain pipe, some models of the nickel content of austenitic stainless steel to be slightly higher than the values ??shown in the table; ③ free; ④ the highest amount of Ta containing 0.10%; ⑤ highest content of 0.75%; ⑥ highest content of 0.70%