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50Cr-50Ni Alloy vs. SAE-AISI 4140 Steel

50Cr-50Ni alloy belongs to the otherwise unclassified metals classification, while SAE-AISI 4140 steel belongs to the iron alloys. There are 21 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 50Cr-50Ni alloy and the bottom bar is SAE-AISI 4140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 5.7
11 to 26
Poisson's Ratio 0.26
0.29
Shear Modulus, GPa 84
73
Tensile Strength: Ultimate (UTS), MPa 620
690 to 1080
Tensile Strength: Yield (Proof), MPa 390
590 to 990

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 50
2.4
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 7.9
1.5
Embodied Energy, MJ/kg 110
20
Embodied Water, L/kg 350
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
74 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 350
920 to 2590
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
25 to 38
Strength to Weight: Bending, points 20
22 to 30
Thermal Shock Resistance, points 14
20 to 32

Alloy Composition

Aluminum (Al), % 0 to 0.25
0
Carbon (C), % 0 to 0.1
0.38 to 0.43
Chromium (Cr), % 48 to 52
0.8 to 1.1
Iron (Fe), % 0 to 1.0
96.8 to 97.8
Manganese (Mn), % 0 to 0.3
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 44.5 to 52
0
Nitrogen (N), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.020
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040
Titanium (Ti), % 0 to 0.5
0