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SAE-AISI M42 Steel vs. SAE-AISI S6 Steel

Both SAE-AISI M42 steel and SAE-AISI S6 steel are iron alloys. They have 82% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M42 steel and the bottom bar is SAE-AISI S6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
72
Tensile Strength: Ultimate (UTS), MPa 810 to 2310
670 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1540
1430
Melting Onset (Solidus), °C 1490
1390
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 20
41
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 30
3.2
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 7.4
2.3
Embodied Energy, MJ/kg 100
33
Embodied Water, L/kg 140
56

Common Calculations

PREN (Pitting Resistance) 38
2.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 79
24 to 70
Strength to Weight: Bending, points 24 to 48
22 to 45
Thermal Diffusivity, mm2/s 5.4
11
Thermal Shock Resistance, points 25 to 71
22 to 64

Alloy Composition

Carbon (C), % 1.1 to 1.2
0.4 to 0.5
Chromium (Cr), % 3.5 to 4.3
1.2 to 1.5
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 76.3 to 81
92.8 to 94.7
Manganese (Mn), % 0.15 to 0.4
1.2 to 1.5
Molybdenum (Mo), % 9.0 to 10
0.3 to 0.5
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.15 to 0.65
2.0 to 2.5
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
0.2 to 0.4

Comparable Variants