SAE-AISI M6 Steel vs. 50Cr-50Ni Alloy

SAE-AISI M6 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 M6 steel and the bottom bar is 50Cr-50Ni alloy.

SAE-AISI M6 (T11306) Cobalt High-Speed Steel 50Cr-50Ni (R20500) Casting Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		200
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.29
Poisson's Ratio		0.26

Shear Modulus, GPa		77
Shear Modulus, GPa		84

Tensile Strength: Ultimate (UTS), MPa		840 to 2210
Tensile Strength: Ultimate (UTS), MPa		620

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		350

Specific Heat Capacity, J/kg-K		440
Specific Heat Capacity, J/kg-K		490

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

Otherwise Unclassified Properties

Base Metal Price, % relative		39
Base Metal Price, % relative		50

Density, g/cm³		8.4
Density, g/cm³		8.0

Embodied Carbon, kg CO₂/kg material		8.0
Embodied Carbon, kg CO₂/kg material		7.9

Embodied Energy, MJ/kg		120
Embodied Energy, MJ/kg		110

Embodied Water, L/kg		160
Embodied Water, L/kg		350

Common Calculations

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

Stiffness to Weight: Bending, points		23
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		28 to 73
Strength to Weight: Axial, points		21

Strength to Weight: Bending, points		24 to 45
Strength to Weight: Bending, points		20

Thermal Shock Resistance, points		26 to 68
Thermal Shock Resistance, points		14

Alloy Composition

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

Carbon (C), %		0.75 to 0.85
Carbon (C), %		0 to 0.1

Chromium (Cr), %		3.8 to 4.5
Chromium (Cr), %		48 to 52

Cobalt (Co), %		11 to 13
Cobalt (Co), %		0

Iron (Fe), %		68.8 to 74.6
Iron (Fe), %		0 to 1.0

Manganese (Mn), %		0.15 to 0.4
Manganese (Mn), %		0 to 0.3

Molybdenum (Mo), %		4.5 to 5.5
Molybdenum (Mo), %		0

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

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

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

Silicon (Si), %		0.2 to 0.45
Silicon (Si), %		0 to 1.0

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

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

Tungsten (W), %		3.8 to 4.8
Tungsten (W), %		0

Vanadium (V), %		1.3 to 1.7
Vanadium (V), %		0