ASTM A732 Grade 3A Cast Steel
Alloy Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength590MPa
Yield Strength370MPa
Brinell Hardness180HB
Maximum Service Temperature400°C
Chemical Composition
C
0.35 to 0.45%
CR
0 to 0.35%
NI
0 to 0.5%
MN
0.7 to 1.0%
SI
0.2 to 1.0%
P
0 to 0.040%
S
0 to 0.045%
CU
0 to 0.5%
W
0 to 0.1%
FE
96 to 98.8%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
25 %
Fatigue Strength
270 MPa
Poisson's Ratio
0.29
Shear Modulus
72 GPa
Tensile Strength: Ultimate (UTS)
590 MPa
Tensile Strength: Yield (Proof)
370 MPa
Hardness
Brinell Hardness
180
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
400 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
43 W/m-K
Thermal Diffusivity
12 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
18 points
Electrical
Electrical Conductivity: Equal Volume
7.4 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.5 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
370 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
21 points
Strength to Weight: Bending
20 points
Environmental
Base Metal Price
2.3 % relative
Embodied Carbon
1.5 kg CO 2 /kg material
Embodied Energy
19 MJ/kg
Embodied Energy
19 MJ/kg 8.4 x 10 3 BTU/lb
Embodied Water
48 L/kg
Embodied Water
48 L/kg 5.7 gal/lb
Registered Designations & Aliases
ASTM A732 Grade 3A 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