431 stainless steel
Name: martensitic stainless steel
Standard: AISI, ASTM
Model: 431
UNS Number: S43100
● 431 properties and applications:
431 (16Cr-2Ni) with Ni-Cr steel, obtained by heat treatment of high mechanical properties, corrosion resistance than 410 steel and 430 steel. 431 stainless steel corresponding to the Chinese 1Cr17Ni2, Japanese JIS SUS431.
● 431 chemical composition of ①:
Carbon C: ≤ 0.20
Manganese Mn: ≤ 1.00
Si Si: ≤ 1.00
Chromium Cr: 15.0 ~ 17.0
Ni-Ni ②: 1.25 ~ 2.50
Phosphorus P: ≤ 0.04
Sulfur S: ≤ 0.03
Note: ① single value unless otherwise stated herein, are the highest value; ② pipe technology for some time, some types of austenitic stainless steel containing nickel must be slightly higher than the values ​​shown in the table; ③ free; ④ the highest amount of Ta containing 0.10%; ⑤ the highest content of 0.75%; ⑥ the highest content of 0.70%