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SAE-AISI A9 Steel vs. 50Cr-50Ni Alloy

SAE-AISI A9 steel belongs to the iron alloys classification, while 50Cr-50Ni alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A9 steel and the bottom bar is 50Cr-50Ni alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 74
84
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
620

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Specific Heat Capacity, J/kg-K 470
490
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
50
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.7
7.9
Embodied Energy, MJ/kg 70
110
Embodied Water, L/kg 82
350

Common Calculations

Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 73
21
Strength to Weight: Bending, points 24 to 46
20
Thermal Shock Resistance, points 25 to 66
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0.45 to 0.55
0 to 0.1
Chromium (Cr), % 4.8 to 5.5
48 to 52
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 87 to 90.5
0 to 1.0
Manganese (Mn), % 0 to 0.5
0 to 0.3
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 1.3 to 1.8
44.5 to 52
Nitrogen (N), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 1.0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Vanadium (V), % 0.8 to 1.4
0