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SAE-AISI M7 Steel vs. 50Cr-50Ni-Cb Alloy

SAE-AISI M7 steel belongs to the iron alloys classification, while 50Cr-50Ni-Cb alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M7 steel and the bottom bar is 50Cr-50Ni-Cb alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 77
84
Tensile Strength: Ultimate (UTS), MPa 760 to 2210
620

Thermal Properties

Latent Heat of Fusion, J/g 270
350
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 18
60
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 8.9
9.2
Embodied Energy, MJ/kg 130
130
Embodied Water, L/kg 100
350

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 76
21
Strength to Weight: Bending, points 23 to 47
20
Thermal Shock Resistance, points 24 to 69
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 1.0 to 1.1
0 to 0.1
Chromium (Cr), % 3.5 to 4.0
47 to 52
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 79.8 to 83.8
0 to 1.0
Manganese (Mn), % 0.15 to 0.4
0 to 0.3
Molybdenum (Mo), % 8.2 to 9.2
0
Nickel (Ni), % 0 to 0.3
43.3 to 51.6
Niobium (Nb), % 0
1.4 to 1.7
Nitrogen (N), % 0
0 to 0.16
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0.2 to 0.55
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.8 to 2.3
0