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SAE-AISI M6 Steel vs. AWS ER90S-B9

Both SAE-AISI M6 steel and AWS ER90S-B9 are iron alloys. They have 78% 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 M6 steel and the bottom bar is AWS ER90S-B9.

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 840 to 2210
690

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1560
1450
Melting Onset (Solidus), °C 1510
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 17
25
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
7.0
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
2.6
Embodied Energy, MJ/kg 120
37
Embodied Water, L/kg 160
91

Common Calculations

PREN (Pitting Resistance) 28
13
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 28 to 73
25
Strength to Weight: Bending, points 24 to 45
22
Thermal Diffusivity, mm2/s 4.7
6.9
Thermal Shock Resistance, points 26 to 68
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0.75 to 0.85
0.070 to 0.13
Chromium (Cr), % 3.8 to 4.5
8.0 to 10.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 68.8 to 74.6
84.4 to 90.7
Manganese (Mn), % 0.15 to 0.4
0 to 1.2
Molybdenum (Mo), % 4.5 to 5.5
0.85 to 1.2
Nickel (Ni), % 0
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 0.2 to 0.45
0.15 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0.15 to 0.3
Residuals, % 0
0 to 0.5