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SAE-AISI M46 Steel vs. S31100 Stainless Steel

Both SAE-AISI M46 steel and S31100 stainless steel are iron alloys. They have 71% 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 M46 steel and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 800 to 2300
1000

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1540
1420
Melting Onset (Solidus), °C 1500
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 18
16
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 33
16
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 12
3.1
Embodied Energy, MJ/kg 180
44
Embodied Water, L/kg 150
170

Common Calculations

PREN (Pitting Resistance) 35
26
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 78
36
Strength to Weight: Bending, points 24 to 48
29
Thermal Diffusivity, mm2/s 4.9
4.2
Thermal Shock Resistance, points 25 to 71
28

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.060
Chromium (Cr), % 3.7 to 4.2
25 to 27
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 70 to 73.8
63.6 to 69
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 8.0 to 8.5
0
Nickel (Ni), % 0 to 0.3
6.0 to 7.0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.4 to 0.65
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0 to 0.25
Tungsten (W), % 1.9 to 2.2
0
Vanadium (V), % 3.0 to 3.3
0