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SAE-AISI O2 Steel vs. AWS E3155

Both SAE-AISI O2 steel and AWS E3155 are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI O2 steel and the bottom bar is AWS E3155.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
81
Tensile Strength: Ultimate (UTS), MPa 640 to 2050
770

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 43
13
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
70
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.8
7.7
Embodied Energy, MJ/kg 26
110
Embodied Water, L/kg 50
300

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 73
26
Strength to Weight: Bending, points 21 to 46
22
Thermal Diffusivity, mm2/s 12
3.3
Thermal Shock Resistance, points 22 to 70
20

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.1
Chromium (Cr), % 0 to 0.5
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0 to 0.25
0 to 0.75
Iron (Fe), % 95 to 97.8
23.3 to 36.3
Manganese (Mn), % 1.4 to 1.8
1.0 to 2.5
Molybdenum (Mo), % 0 to 0.3
2.5 to 3.5
Nickel (Ni), % 0 to 0.3
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
2.0 to 3.0
Vanadium (V), % 0 to 0.3
0