CN7M ASTM A743 (CENT, INVEST, SAND)
Grade（UNS）：CN7M (N08007)
Type：20Chromium,29 Nickel，with Copper and Molybdenum
Chemical Requirements:
C(max):0.07
Men(max)：1.50
Si(max)：1.50
P(max):0.04
S(max):0.04
Cr:19.0~22.0
Ni:27.5~30.5
Molybdenum:2.0~3.0
Copper:3.0~4.0
Heat Treatment Requirements:
Heat to 2050°F [1120°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:62
Tensile, MPa:425
Yield Strength, min
Yield, ksi:25
Yield, MPa:170
Elongation in 2 in. [50 mm] min, %A: 35
Keywords: corrosion resistant; iron-chromium; iron-chromium nickel; steel castings