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SAE-AISI M46 Steel vs. S42030 Stainless Steel

Both SAE-AISI M46 steel and S42030 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M46 steel and the bottom bar is S42030 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
76
Tensile Strength: Ultimate (UTS), MPa 800 to 2300
670

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1540
1450
Melting Onset (Solidus), °C 1500
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 18
28
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 33
10
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 12
2.5
Embodied Energy, MJ/kg 180
34
Embodied Water, L/kg 150
110

Common Calculations

PREN (Pitting Resistance) 35
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 78
24
Strength to Weight: Bending, points 24 to 48
22
Thermal Diffusivity, mm2/s 4.9
7.7
Thermal Shock Resistance, points 25 to 71
24

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.3
Chromium (Cr), % 3.7 to 4.2
12 to 14
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
2.0 to 3.0
Iron (Fe), % 70 to 73.8
77.6 to 85
Manganese (Mn), % 0.2 to 0.4
0 to 1.0
Molybdenum (Mo), % 8.0 to 8.5
1.0 to 3.0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
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