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SAE-AISI M6 Steel vs. SAE-AISI 1146 Steel

Both SAE-AISI M6 steel and SAE-AISI 1146 steel are iron alloys. They have 72% of their average alloy composition in common. There are 21 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 M6 steel and the bottom bar is SAE-AISI 1146 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 840 to 2210
670 to 730

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Melting Completion (Liquidus), °C 1560
1460
Melting Onset (Solidus), °C 1510
1420
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 17
51
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
1.8
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 120
18
Embodied Water, L/kg 160
46

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28 to 73
24 to 26
Strength to Weight: Bending, points 24 to 45
22 to 23
Thermal Diffusivity, mm2/s 4.7
14
Thermal Shock Resistance, points 26 to 68
20 to 22

Alloy Composition

Carbon (C), % 0.75 to 0.85
0.42 to 0.49
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 11 to 13
0
Iron (Fe), % 68.8 to 74.6
98.3 to 98.8
Manganese (Mn), % 0.15 to 0.4
0.7 to 1.0
Molybdenum (Mo), % 4.5 to 5.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0.080 to 0.13
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0