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Grey Cast Iron vs. ASTM A204 Steel

Both grey cast iron and ASTM A204 steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grey cast iron and the bottom bar is ASTM A204 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 300
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 180
190
Elongation at Break, % 9.6
18 to 22
Fatigue Strength, MPa 69 to 170
200 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 69
73
Shear Strength, MPa 180 to 610
330 to 360
Tensile Strength: Ultimate (UTS), MPa 160 to 450
520 to 590
Tensile Strength: Yield (Proof), MPa 98 to 290
290 to 330

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
52
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
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
90 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 27 to 240
220 to 290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 5.8 to 17
18 to 21
Strength to Weight: Bending, points 8.7 to 17
18 to 20
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 6.0 to 17
15 to 17