431 stainless steel plate is Ni-containing Cr steel, through the heat treatment can get high mechanical properties, corrosion resistance is better than 410 steel and 430 steel. 431 stainless steel corresponds to China 1Cr17Ni2, Japan JIS SUS431.

431 stainless steel plate Chemical composition
C：≤0.20
Mn：≤1.00
Si：≤1.00
Cr：15.0~17.0
Ni②：1.25~2.50
P：≤0.04
S：≤0.03

431 stainless steel plate Physical properties
Tensile strength σb (MPa): quenching and tempering, ≥1080
Elongation δ5 (%): quenching and tempering, ≥10
Impact energy Akv (J): quenching and tempering, ≥ 39
Hardness: annealing, ≤ 285HB

431 stainless steel plate delivery status: generally heat treatment status delivery, the type of heat treatment specified in the contract; not marked, according to the state of non-heat delivery.