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SAE-AISI M2 Steel vs. AWS ER80S-B8

Both SAE-AISI M2 steel and AWS ER80S-B8 are iron alloys. They have 87% of their average alloy composition in common. There are 22 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 M2 steel and the bottom bar is AWS ER80S-B8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
630

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1570
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 22
26
Thermal Expansion, µm/m-K 10
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
6.5
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
2.0
Embodied Energy, MJ/kg 130
28
Embodied Water, L/kg 98
89

Common Calculations

PREN (Pitting Resistance) 31
13
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 25 to 71
22
Strength to Weight: Bending, points 22 to 44
21
Thermal Diffusivity, mm2/s 5.9
6.9
Thermal Shock Resistance, points 27 to 76
17

Alloy Composition

Carbon (C), % 0.78 to 1.1
0 to 0.1
Chromium (Cr), % 3.8 to 4.5
8.0 to 10.5
Copper (Cu), % 0 to 0.25
0 to 0.35
Iron (Fe), % 78.5 to 83.4
85.6 to 90.8
Manganese (Mn), % 0.15 to 0.4
0.4 to 0.7
Molybdenum (Mo), % 4.5 to 5.5
0.8 to 1.2
Nickel (Ni), % 0 to 0.3
0 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0 to 0.5
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