50Cr-50Ni Alloy vs. SAE-AISI O7 Steel

50Cr-50Ni alloy belongs to the otherwise unclassified metals classification, while SAE-AISI O7 steel belongs to the iron alloys. 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 50Cr-50Ni alloy and the bottom bar is SAE-AISI O7 steel.

50Cr-50Ni (R20500) Casting Alloy SAE-AISI O7 (T31507) Oil-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		210
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.26
Poisson's Ratio		0.29

Shear Modulus, GPa		84
Shear Modulus, GPa		73

Tensile Strength: Ultimate (UTS), MPa		620
Tensile Strength: Ultimate (UTS), MPa		680 to 2110

Thermal Properties

Latent Heat of Fusion, J/g		350
Latent Heat of Fusion, J/g		250

Specific Heat Capacity, J/kg-K		490
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Base Metal Price, % relative		50
Base Metal Price, % relative		6.0

Density, g/cm³		8.0
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		7.9
Embodied Carbon, kg CO₂/kg material		2.3

Embodied Energy, MJ/kg		110
Embodied Energy, MJ/kg		33

Embodied Water, L/kg		350
Embodied Water, L/kg		52

Common Calculations

Stiffness to Weight: Axial, points		15
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		25
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		21
Strength to Weight: Axial, points		24 to 74

Strength to Weight: Bending, points		20
Strength to Weight: Bending, points		22 to 46

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		23 to 70

Alloy Composition

Aluminum (Al), %		0 to 0.25
Aluminum (Al), %		0

Carbon (C), %		0 to 0.1
Carbon (C), %		1.1 to 1.3

Chromium (Cr), %		48 to 52
Chromium (Cr), %		0.35 to 0.85

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Iron (Fe), %		0 to 1.0
Iron (Fe), %		92.9 to 97.6

Manganese (Mn), %		0 to 0.3
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.3

Nickel (Ni), %		44.5 to 52
Nickel (Ni), %		0 to 0.3

Nitrogen (N), %		0 to 0.3
Nitrogen (N), %		0

Phosphorus (P), %		0 to 0.020
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0 to 1.0
Silicon (Si), %		0 to 0.6

Sulfur (S), %		0 to 0.020
Sulfur (S), %		0 to 0.030

Titanium (Ti), %		0 to 0.5
Titanium (Ti), %		0

Tungsten (W), %		0
Tungsten (W), %		1.0 to 2.0

Vanadium (V), %		0
Vanadium (V), %		0 to 0.4