CK3MCuN ASTM A743 (CENT, INVEST, SAND)
Grade（UNS）：Ck3MCuN (J93254)
Type：20Chromium,18 Nickel，with Copper and Molybdenum
Chemical Requirements:
C(max):0.025
Men(max)：1.20
Si(max)：1.00
P(max):0.045
S(max):0.010
Cr:19.5~20.5
Ni:17.5~19.5
Molybdenum:6.0~7.0
Copper:0.50~1.00
Nitrogen:0.180~0.240
Heat Treatment Requirements:
Heat to 2100°F [1150°C] minimum, hold for sufficient time to heat casting to temperature, quench in water or rapid
cool by other means
Tensile Requirements:
Tensile Strength, min
Tensile, ksi:80
Tensile, MPa:550
Yield Strength, min
Yield, ksi:38
Yield, MPa:260
Elongation in 2 in. [50 mm] min, %A: 35
Keywords: corrosion resistant; iron-chromium; iron-chromium nickel; steel castings