ASTM A732 Grade 12Q Cast Steel
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength1470MPa
Yield Strength1340MPa
Brinell Hardness440HB
Maximum Service Temperature420°C
Chemical Composition
C
0.45 to 0.55%
CR
0.8 to 1.1%
NI
0 to 0.5%
MO
0 to 0.1%
MN
0.65 to 1.0%
SI
0.2 to 0.8%
P
0 to 0.040%
S
0 to 0.045%
CU
0 to 0.5%
V
0 to 0.15%
W
0 to 0.1%
FE
95.2 to 97.9%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
4.0 %
Fatigue Strength
750 MPa
Poisson's Ratio
0.29
Shear Modulus
72 GPa
Tensile Strength: Ultimate (UTS)
1470 MPa
Tensile Strength: Yield (Proof)
1340 MPa
Hardness
Brinell Hardness
440
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
420 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
47 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
43 points
Electrical
Electrical Conductivity: Equal Volume
7.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.7 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
57 MJ/m 3
Resilience: Unit (Modulus of Resilience)
4770 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
52 points
Strength to Weight: Bending
37 points
Environmental
Base Metal Price
2.6 % relative
Embodied Carbon
1.7 kg CO 2 /kg material
Embodied Energy
23 MJ/kg
Embodied Energy
23 MJ/kg 9.8 x 10 3 BTU/lb
Embodied Water
52 L/kg
Embodied Water
52 L/kg 6.2 gal/lb
Registered Designations & Aliases
ASTM A732 Grade 12Q Cast Steel
Standards
ASTM A732 ASTM A732: Standard Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
ASTM A732 ASTM A732: Standard Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005