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SAE-AISI M42 Steel vs. S35315 Stainless Steel

Both SAE-AISI M42 steel and S35315 stainless steel are iron alloys. They have 42% 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 S35315 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
78
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
740

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Melting Completion (Liquidus), °C 1540
1370
Melting Onset (Solidus), °C 1490
1330
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 20
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 30
34
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 7.4
5.7
Embodied Energy, MJ/kg 100
81
Embodied Water, L/kg 140
220

Common Calculations

PREN (Pitting Resistance) 38
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
26
Strength to Weight: Bending, points 24 to 48
23
Thermal Diffusivity, mm2/s 5.4
3.1
Thermal Shock Resistance, points 25 to 71
17

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.1
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
33.6 to 40.6
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 9.0 to 10
0
Nickel (Ni), % 0 to 0.3
34 to 36
Nitrogen (N), % 0
0.12 to 0.18
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 0.65
1.2 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.2 to 1.9
0
Vanadium (V), % 1.0 to 1.4
0