CA40 ASTM A743&A743M (CENT, INVEST, SAND)
Type：12Chromium
C(max):0.20~0.40
Men(max)：1.00
Si(max)：1.50
P(max):0.04
S(max):0.04
Cr:11.5~14.0
Ni:1.0 max
Moiybdenum：0.5 max
Heat Treatment Requirements:
(1) Heat to 1750°F [955°C] minimum, air cool and temper at 1100°F [595°C] minimum, or
(2) Anneal at 1450°F [790°C] minimum
Tensile Requirements:
Tensile Strength, min
Tensile, ksi: 100
Tensile, MPa:690
Yield Strength, min
Yield, ksi:70
Yield, MPa:485
Elongation in 2 in. [50 mm] min, %A: 15
Reduction of Area, min, % ：25
Keywords: corrosion resistant; iron-chromium; iron-chromium nickel; steel castings