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SAE-AISI M2 Steel vs. AWS ER90S-D2

Both SAE-AISI M2 steel and AWS ER90S-D2 are iron alloys. They have 82% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M2 steel and the bottom bar is AWS ER90S-D2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
710

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1610
1450
Melting Onset (Solidus), °C 1570
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 22
47
Thermal Expansion, µm/m-K 10
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
2.6
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
1.6
Embodied Energy, MJ/kg 130
21
Embodied Water, L/kg 98
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 25 to 71
25
Strength to Weight: Bending, points 22 to 44
23
Thermal Diffusivity, mm2/s 5.9
13
Thermal Shock Resistance, points 27 to 76
21

Alloy Composition

Carbon (C), % 0.78 to 1.1
0.070 to 0.12
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0 to 0.5
Iron (Fe), % 78.5 to 83.4
95.2 to 97.4
Manganese (Mn), % 0.15 to 0.4
1.6 to 2.1
Molybdenum (Mo), % 4.5 to 5.5
0.4 to 0.6
Nickel (Ni), % 0 to 0.3
0 to 0.15
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0.5 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0
Residuals, % 0
0 to 0.5