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SAE-AISI M42 Steel vs. S32506 Stainless Steel

Both SAE-AISI M42 steel and S32506 stainless steel are iron alloys. They have 72% 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 M42 steel and the bottom bar is S32506 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 78
81
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
710

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1540
1450
Melting Onset (Solidus), °C 1490
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 20
16
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 30
20
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 7.4
3.9
Embodied Energy, MJ/kg 100
54
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 38
38
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
25
Strength to Weight: Bending, points 24 to 48
23
Thermal Diffusivity, mm2/s 5.4
4.3
Thermal Shock Resistance, points 25 to 71
19

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.030
Chromium (Cr), % 3.5 to 4.3
24 to 26
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 76.3 to 81
60.8 to 67.4
Manganese (Mn), % 0.15 to 0.4
0 to 1.0
Molybdenum (Mo), % 9.0 to 10
3.0 to 3.5
Nickel (Ni), % 0 to 0.3
5.5 to 7.2
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.65
0 to 0.9
Sulfur (S), % 0 to 0.030
0 to 0.015
Tungsten (W), % 1.2 to 1.9
0.050 to 0.3
Vanadium (V), % 1.0 to 1.4
0