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SAE-AISI M3 Class 1 Steel vs. S32050 Stainless Steel

Both SAE-AISI M3 class 1 steel and S32050 stainless steel are iron alloys. They have 58% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M3 class 1 steel and the bottom bar is S32050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
770

Thermal Properties

Latent Heat of Fusion, J/g 260
310
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1570
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
31
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 10
6.0
Embodied Energy, MJ/kg 150
81
Embodied Water, L/kg 100
210

Common Calculations

PREN (Pitting Resistance) 33
48
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 72
27
Strength to Weight: Bending, points 22 to 44
23
Thermal Diffusivity, mm2/s 7.2
3.3
Thermal Shock Resistance, points 24 to 67
17

Alloy Composition

Carbon (C), % 1.0 to 1.1
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
22 to 24
Copper (Cu), % 0 to 0.25
0 to 0.4
Iron (Fe), % 76.9 to 82.9
43.1 to 51.8
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.8 to 6.5
6.0 to 6.6
Nickel (Ni), % 0 to 0.3
20 to 23
Nitrogen (N), % 0
0.21 to 0.32
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.3 to 2.8
0