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SAE-AISI M42 Steel vs. AWS E90C-B9

Both SAE-AISI M42 steel and AWS E90C-B9 are iron alloys. They have 85% 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 M42 steel and the bottom bar is AWS E90C-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 78
75
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
710

Thermal Properties

Latent Heat of Fusion, J/g 270
270
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1490
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 20
25
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 30
7.0
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.4
2.6
Embodied Energy, MJ/kg 100
37
Embodied Water, L/kg 140
91

Common Calculations

PREN (Pitting Resistance) 38
13
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
25
Strength to Weight: Bending, points 24 to 48
23
Thermal Diffusivity, mm2/s 5.4
6.9
Thermal Shock Resistance, points 25 to 71
20

Alloy Composition


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Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 1.1 to 1.2
0.080 to 0.13
Chromium (Cr), % 3.5 to 4.3
8.0 to 10.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 76.3 to 81
84.4 to 90.9
Manganese (Mn), % 0.15 to 0.4
0 to 1.2
Molybdenum (Mo), % 9.0 to 10
0.85 to 1.2
Nickel (Ni), % 0 to 0.3
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 0.020
Silicon (Si), % 0.15 to 0.65
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0.15 to 0.3
Residuals, % 0
0 to 0.5