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SAE-AISI M2 Steel vs. S32615 Stainless Steel

Both SAE-AISI M2 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 M2 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 77
75
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
620

Thermal Properties

Latent Heat of Fusion, J/g 260
370
Melting Completion (Liquidus), °C 1610
1350
Melting Onset (Solidus), °C 1570
1310
Specific Heat Capacity, J/kg-K 440
500
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 24
24
Density, g/cm3 8.4
7.6
Embodied Carbon, kg CO2/kg material 8.8
4.4
Embodied Energy, MJ/kg 130
63
Embodied Water, L/kg 98
170

Common Calculations

PREN (Pitting Resistance) 31
21
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 25 to 71
23
Strength to Weight: Bending, points 22 to 44
21
Thermal Shock Resistance, points 27 to 76
15

Alloy Composition

Carbon (C), % 0.78 to 1.1
0 to 0.070
Chromium (Cr), % 3.8 to 4.5
16.5 to 19.5
Copper (Cu), % 0 to 0.25
1.5 to 2.5
Iron (Fe), % 78.5 to 83.4
46.4 to 57.9
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 4.5 to 5.5
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), % 0.2 to 0.45
4.8 to 6.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0