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SAE-AISI M42 Steel vs. AWS E33-31

Both SAE-AISI M42 steel and AWS E33-31 are iron alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (3, 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 E33-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 78
81
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
810

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Melting Completion (Liquidus), °C 1540
1380
Melting Onset (Solidus), °C 1490
1330
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 30
36
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 7.4
6.0
Embodied Energy, MJ/kg 100
86
Embodied Water, L/kg 140
260

Common Calculations

PREN (Pitting Resistance) 38
44
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
28
Strength to Weight: Bending, points 24 to 48
24
Thermal Shock Resistance, points 25 to 71
19

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.030
Chromium (Cr), % 3.5 to 4.3
31 to 35
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0.4 to 0.8
Iron (Fe), % 76.3 to 81
24.7 to 34.8
Manganese (Mn), % 0.15 to 0.4
2.5 to 4.0
Molybdenum (Mo), % 9.0 to 10
1.0 to 2.0
Nickel (Ni), % 0 to 0.3
30 to 32
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.15 to 0.65
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0