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SAE-AISI M42 Steel vs. S32615 Stainless Steel

Both SAE-AISI M42 steel and S32615 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M42 steel and the bottom bar is S32615 stainless steel.

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
620

Thermal Properties

Latent Heat of Fusion, J/g 270
370
Melting Completion (Liquidus), °C 1540
1350
Melting Onset (Solidus), °C 1490
1310
Specific Heat Capacity, J/kg-K 450
500
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 30
24
Density, g/cm3 8.2
7.6
Embodied Carbon, kg CO2/kg material 7.4
4.4
Embodied Energy, MJ/kg 100
63
Embodied Water, L/kg 140
170

Common Calculations

PREN (Pitting Resistance) 38
21
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
23
Strength to Weight: Bending, points 24 to 48
21
Thermal Shock Resistance, points 25 to 71
15

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.070
Chromium (Cr), % 3.5 to 4.3
16.5 to 19.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
1.5 to 2.5
Iron (Fe), % 76.3 to 81
46.4 to 57.9
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 9.0 to 10
0.3 to 1.5
Nickel (Ni), % 0 to 0.3
19 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.15 to 0.65
4.8 to 6.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0