ASTM A732 Investment Cast Steel
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength460 to 1470MPa
Yield Strength310 to 1340MPa
Brinell Hardness140 to 440HB
Maximum Service Temperature400 to 430°C
Chemical Composition
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
4.0 to 25 %
Fatigue Strength
230 to 750 MPa
Poisson's Ratio
0.29
Shear Modulus
72 to 73 GPa
Tensile Strength: Ultimate (UTS)
460 to 1470 MPa
Tensile Strength: Yield (Proof)
310 to 1340 MPa
Hardness
Brinell Hardness
140 to 440
Physical
Density
7.8 to 7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 to 260 J/g
Maximum Temperature: Mechanical
400 to 430 °C
Melting Completion (Liquidus)
1440 to 1460 °C
Melting Onset (Solidus)
1400 to 1420 °C
Specific Heat Capacity
470 to 480 J/kg-K
Thermal Conductivity
39 to 50 W/m-K
Thermal Diffusivity
10 to 14 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
14 to 43 points
Electrical
Electrical Conductivity: Equal Volume
7.1 to 7.7 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.2 to 8.9 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
45 to 130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
260 to 4770 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
16 to 52 points
Strength to Weight: Bending
17 to 37 points
Environmental
Base Metal Price
2.0 to 3.8 % relative
Embodied Carbon
1.4 to 1.7 kg CO 2 /kg material
Embodied Energy
19 to 24 MJ/kg
Embodied Energy
19 to 24 MJ/kg 8.2 to 10 x 10 3 BTU/lb
Embodied Water
47 to 54 L/kg
Embodied Water
47 to 54 L/kg 5.6 to 6.5 gal/lb
Registered Designations & Aliases
ASTM A732 Investment 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