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SAE-AISI M46 Steel vs. S31727 Stainless Steel

Both SAE-AISI M46 steel and S31727 stainless steel are iron alloys. They have 67% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M46 steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 800 to 2300
630

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1540
1440
Melting Onset (Solidus), °C 1500
1390
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 33
24
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 12
4.7
Embodied Energy, MJ/kg 180
64
Embodied Water, L/kg 150
180

Common Calculations

PREN (Pitting Resistance) 35
35
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 78
22
Strength to Weight: Bending, points 24 to 48
20
Thermal Shock Resistance, points 25 to 71
14

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.030
Chromium (Cr), % 3.7 to 4.2
17.5 to 19
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
2.8 to 4.0
Iron (Fe), % 70 to 73.8
53.7 to 61.3
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 8.0 to 8.5
3.8 to 4.5
Nickel (Ni), % 0 to 0.3
14.5 to 16.5
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.4 to 0.65
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.9 to 2.2
0
Vanadium (V), % 3.0 to 3.3
0