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SAE-AISI M6 Steel vs. ACI-ASTM CK3MCuN Steel

Both SAE-AISI M6 steel and ACI-ASTM CK3MCuN steel are iron alloys. They have 63% 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 M6 steel and the bottom bar is ACI-ASTM CK3MCuN 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 77
80
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
620

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1560
1460
Melting Onset (Solidus), °C 1510
1350
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 17
12
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 39
29
Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 8.0
5.6
Embodied Energy, MJ/kg 120
76
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 28
45
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28 to 73
21
Strength to Weight: Bending, points 24 to 45
20
Thermal Diffusivity, mm2/s 4.7
3.2
Thermal Shock Resistance, points 26 to 68
14

Alloy Composition

Carbon (C), % 0.75 to 0.85
0 to 0.025
Chromium (Cr), % 3.8 to 4.5
19.5 to 20.5
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 68.8 to 74.6
49.5 to 56.3
Manganese (Mn), % 0.15 to 0.4
0 to 1.2
Molybdenum (Mo), % 4.5 to 5.5
6.0 to 7.0
Nickel (Ni), % 0
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0.2 to 0.45
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0