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SAE-AISI M42 Steel vs. N08926 Stainless Steel

Both SAE-AISI M42 steel and N08926 stainless steel are iron alloys. They have 57% 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 M42 steel and the bottom bar is N08926 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 78
80
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
740

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1540
1460
Melting Onset (Solidus), °C 1490
1410
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 20
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 30
33
Density, g/cm3 8.2
8.1
Embodied Carbon, kg CO2/kg material 7.4
6.2
Embodied Energy, MJ/kg 100
84
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 38
45
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 28 to 79
25
Strength to Weight: Bending, points 24 to 48
22
Thermal Diffusivity, mm2/s 5.4
3.2
Thermal Shock Resistance, points 25 to 71
16

Alloy Composition

Carbon (C), % 1.1 to 1.2
0 to 0.020
Chromium (Cr), % 3.5 to 4.3
19 to 21
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0.5 to 1.5
Iron (Fe), % 76.3 to 81
41.7 to 50.4
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 9.0 to 10
6.0 to 7.0
Nickel (Ni), % 0 to 0.3
24 to 26
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.65
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0