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SAE-AISI A7 Steel vs. 50Cr-50Ni Alloy

SAE-AISI A7 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 (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 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 72
84
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
620

Thermal Properties

Latent Heat of Fusion, J/g 260
350
Specific Heat Capacity, J/kg-K 470
490
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 10
50
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 13
7.9
Embodied Energy, MJ/kg 200
110
Embodied Water, L/kg 100
350

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 77
21
Strength to Weight: Bending, points 25 to 48
20
Thermal Shock Resistance, points 27 to 72
14

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 2.0 to 2.9
0 to 0.1
Chromium (Cr), % 5.0 to 5.8
48 to 52
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
0 to 1.0
Manganese (Mn), % 0 to 0.8
0 to 0.3
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
44.5 to 52
Nitrogen (N), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.5
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0