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SAE-AISI M2 Steel vs. S32906 Stainless Steel

Both SAE-AISI M2 steel and S32906 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 22 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 S32906 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
850

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1610
1430
Melting Onset (Solidus), °C 1570
1380
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 10
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
20
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 8.8
3.7
Embodied Energy, MJ/kg 130
52
Embodied Water, L/kg 98
190

Common Calculations

PREN (Pitting Resistance) 31
41
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 25 to 71
30
Strength to Weight: Bending, points 22 to 44
26
Thermal Diffusivity, mm2/s 5.9
3.6
Thermal Shock Resistance, points 27 to 76
23

Alloy Composition

Carbon (C), % 0.78 to 1.1
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
28 to 30
Copper (Cu), % 0 to 0.25
0 to 0.8
Iron (Fe), % 78.5 to 83.4
56.6 to 63.6
Manganese (Mn), % 0.15 to 0.4
0.8 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
1.5 to 2.6
Nickel (Ni), % 0 to 0.3
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0 to 0.5
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