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Grey Cast Iron vs. ASTM A209 Steel

Both grey cast iron and ASTM A209 steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grey cast iron and the bottom bar is ASTM A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 300
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 9.6
34
Fatigue Strength, MPa 69 to 170
180 to 200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 69
73
Shear Strength, MPa 180 to 610
280 to 310
Tensile Strength: Ultimate (UTS), MPa 160 to 450
420 to 460
Tensile Strength: Yield (Proof), MPa 98 to 290
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Melting Completion (Liquidus), °C 1380
1470
Melting Onset (Solidus), °C 1180
1420 to 1430
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 46
50
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.4
Density, g/cm3 7.5
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.5
Embodied Energy, MJ/kg 21
20
Embodied Water, L/kg 44
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 37
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
130 to 170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 5.8 to 17
15 to 16
Strength to Weight: Bending, points 8.7 to 17
16 to 17
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 6.0 to 17
12 to 14