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SAE-AISI M7 Steel vs. SAE-AISI S6 Steel

Both SAE-AISI M7 steel and SAE-AISI S6 steel are iron alloys. They have 85% 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 M7 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 77
72
Tensile Strength: Ultimate (UTS), MPa 760 to 2210
670 to 1920

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Melting Completion (Liquidus), °C 1560
1430
Melting Onset (Solidus), °C 1510
1390
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 28
41
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 18
3.2
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 8.9
2.3
Embodied Energy, MJ/kg 130
33
Embodied Water, L/kg 100
56

Common Calculations

PREN (Pitting Resistance) 35
2.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 76
24 to 70
Strength to Weight: Bending, points 23 to 47
22 to 45
Thermal Diffusivity, mm2/s 7.8
11
Thermal Shock Resistance, points 24 to 69
22 to 64

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.4 to 0.5
Chromium (Cr), % 3.5 to 4.0
1.2 to 1.5
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 79.8 to 83.8
92.8 to 94.7
Manganese (Mn), % 0.15 to 0.4
1.2 to 1.5
Molybdenum (Mo), % 8.2 to 9.2
0.3 to 0.5
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.55
2.0 to 2.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.8 to 2.3
0.2 to 0.4

Comparable Variants