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SAE-AISI O2 Steel vs. Austenitic Grey Cast Iron

Both SAE-AISI O2 steel and austenitic grey cast iron are iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O2 steel and the bottom bar is austenitic grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.29
0.29 to 0.3
Shear Modulus, GPa 72
69 to 72
Tensile Strength: Ultimate (UTS), MPa 640 to 2050
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 250
280 to 350
Melting Completion (Liquidus), °C 1450
1340 to 1400
Melting Onset (Solidus), °C 1410
1290 to 1350
Specific Heat Capacity, J/kg-K 470
470 to 490
Thermal Expansion, µm/m-K 11
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
14 to 24
Density, g/cm3 7.8
7.7 to 8.1
Embodied Carbon, kg CO2/kg material 1.8
3.1 to 4.7
Embodied Energy, MJ/kg 26
43 to 65
Embodied Water, L/kg 50
93 to 120

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23 to 25
Strength to Weight: Axial, points 23 to 73
5.3 to 8.2
Strength to Weight: Bending, points 21 to 46
7.9 to 11
Thermal Shock Resistance, points 22 to 70
4.5 to 6.5