ASTM Grade 20 (ISO Grade 150, EN-JL 1020) Grey Cast Iron

Properties

Compare
Bulk Modulus
45 to 67 GPa, or 6.5 to 9.7 106 psi
Compressive (Crushing) Strength
572 MPa, or 82.9 103 psi
Density
7.1 g/cm3, or 440 lb/ft3
Elastic (Young's) Modulus
66 to 97 GPa, or 9.5 to 14 106 psi
Fracture Toughness
320 MPa-m1/2
Hardness
Brinell
156
Resilience
Unit, Per Volume
Resilience
Ultimate (Unit Rupture Work), Per Volume
Resilience
Unit, Per Mass
Resilience
Ultimate, Per Mass
Shear Modulus
33 to 48 GPa, or 4.7 to 6.9 106 psi
Speed of Sound
96 to 110 103 m/s, or 310 to 360 103 ft/s
Stiffness-to-Weight Ratio
Bulk
6.4 to 9.4 MN-m/kg
Stiffness-to-Weight Ratio
Shear
4.6 to 6.8 MN-m/kg
Stiffness-to-Weight Ratio
Tensile
9.2 to 13 MN-m/kg
Strength-to-Weight Ratio
Compressive
80 kN-m/kg
Strength-to-Weight Ratio
Tensile, Ultimate
21 kN-m/kg
Strength-to-Weight Ratio
Tensile, Yield
13 kN-m/kg
Tensile Strength
Ultimate
152 MPa, or 22.0 103 psi
Tensile Strength
Ultimate, 500°C (930°F)
Tensile Strength
Ultimate, 700°C (1290°F)
Tensile Strength
Yield (Proof)
98 MPa, or 14 103 psi
Thermal Conductivity
Ambient
46 W/m-K
Thermal Expansion
20 to 100°C
10.5 µm/m-K
Thermal Expansion
20 to 500°C

See Also

Hans Berns and Werner Theisen, Ferrous Materials: Steel and Cast Iron, 2008 (link).


John E. Bringas (editor), Handbook of Comparative World Steel Standards, 3rd ed., 2004.


Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993 (link).

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