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ACI-ASTM CA28MWV Steel vs. SAE-AISI O2 Steel

Both ACI-ASTM CA28MWV steel and SAE-AISI O2 steel are iron alloys. They have 86% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA28MWV steel and the bottom bar is SAE-AISI O2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Tensile Strength: Ultimate (UTS), MPa 1080
640 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 25
43
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.4
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.8
Embodied Energy, MJ/kg 44
26
Embodied Water, L/kg 100
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 38
23 to 73
Strength to Weight: Bending, points 30
21 to 46
Thermal Diffusivity, mm2/s 6.6
12
Thermal Shock Resistance, points 40
22 to 70

Alloy Composition

Carbon (C), % 0.2 to 0.28
0.85 to 1.0
Chromium (Cr), % 11 to 12.5
0 to 0.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 81.4 to 85.8
95 to 97.8
Manganese (Mn), % 0.5 to 1.0
1.4 to 1.8
Molybdenum (Mo), % 0.9 to 1.3
0 to 0.3
Nickel (Ni), % 0.5 to 1.0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0 to 0.3