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ASTM A217 Cast Steel vs. Grey Cast Iron

Both ASTM A217 cast steel and grey cast iron are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ASTM A217 cast steel and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
160 to 300
Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 21 to 27
9.6
Fatigue Strength, MPa 200 to 320
69 to 170
Poisson's Ratio 0.28 to 0.29
0.29
Shear Modulus, GPa 73 to 75
69
Tensile Strength: Ultimate (UTS), MPa 540 to 710
160 to 450
Tensile Strength: Yield (Proof), MPa 270 to 460
98 to 290

Thermal Properties

Latent Heat of Fusion, J/g 250 to 270
280
Melting Completion (Liquidus), °C 1450 to 1460
1380
Melting Onset (Solidus), °C 1410 to 1420
1180
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 26 to 50
46
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3 to 9.2
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4 to 11
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4 to 7.0
1.9
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.5 to 2.1
1.5
Embodied Energy, MJ/kg 20 to 28
21
Embodied Water, L/kg 47 to 87
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 130
13 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 570
27 to 240
Stiffness to Weight: Axial, points 13 to 14
13
Stiffness to Weight: Bending, points 24 to 25
25
Strength to Weight: Axial, points 19 to 25
5.8 to 17
Strength to Weight: Bending, points 19 to 23
8.7 to 17
Thermal Diffusivity, mm2/s 6.9 to 14
13
Thermal Shock Resistance, points 16 to 20
6.0 to 17