Automotive Grey Cast Iron
Cast Iron
Property Overview
Density7.5g/cm³
Elastic Modulus180GPa
Tensile Strength140 to 290MPa
Yield Strength94 to 200MPa
Brinell Hardness160 to 280HB
Maximum Service TemperatureUnknown
Chemical Composition
Mechanical
Elastic (Young's, Tensile) Modulus
180 GPa
Elongation at Break
9.6 to 14 %
Poisson's Ratio
0.29
Shear Modulus
69 to 70 GPa
Tensile Strength: Ultimate (UTS)
140 to 290 MPa
Tensile Strength: Yield (Proof)
94 to 200 MPa
Hardness
Brinell Hardness
160 to 280
Physical
Density
7.5 to 7.6 g/cm 3
Thermal
Latent Heat of Fusion
260 to 280 J/g
Melting Completion (Liquidus)
1380 to 1390 °C
Melting Onset (Solidus)
1340 to 1350 °C
Specific Heat Capacity
490 J/kg-K
Thermal Conductivity
41 to 43 W/m-K
Thermal Diffusivity
11 to 12 mm 2 /s
Thermal Expansion
12 to 14 µm/m-K
Thermal Shock Resistance
4.2 to 8.6 points
Electrical
Electrical Conductivity: Equal Volume
7.4 to 7.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.8 to 9.1 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
18 to 25 MJ/m 3
Resilience: Unit (Modulus of Resilience)
25 to 110 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
5.2 to 11 points
Strength to Weight: Bending
8.0 to 13 points
Environmental
Base Metal Price
1.9 to 3.0 % relative
Embodied Carbon
1.5 to 1.7 kg CO 2 /kg material
Embodied Energy
21 to 24 MJ/kg
Embodied Energy
21 to 24 MJ/kg 8.9 to 10 x 10 3 BTU/lb
Embodied Water
44 to 51 L/kg
Embodied Water
44 to 51 L/kg 5.2 to 6.1 gal/lb
Registered Designations & Aliases
Automotive Grey Cast Iron
Standards
ASTM A159 ASTM A159: Standard Specification for Automotive Gray Iron Castings
ASTM A159 ASTM A159: Standard Specification for Automotive Gray Iron Castings SAE J431: Automotive Gray Iron Castings Cast Iron: Physical and Engineering Properties, Harold T. Angus, 1976 Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993
SAE J431 SAE J431: Automotive Gray Iron Castings