R31539 Cobalt vs. ASTM A210 Steel

R31539 cobalt belongs to the cobalt alloys classification, while ASTM A210 steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R31539 cobalt and the bottom bar is ASTM A210 steel.

Dispersion Strengthened Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 3, R31539)ASTM A210 Medium-Carbon Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		220
Elastic (Young's, Tensile) Modulus, GPa		190

Elongation at Break, %		13 to 22
Elongation at Break, %		34

Fatigue Strength, MPa		310 to 480
Fatigue Strength, MPa		230 to 250

Poisson's Ratio		0.29
Poisson's Ratio		0.29

Shear Modulus, GPa		86
Shear Modulus, GPa		73

Tensile Strength: Ultimate (UTS), MPa		1000 to 1340
Tensile Strength: Ultimate (UTS), MPa		470 to 540

Tensile Strength: Yield (Proof), MPa		590 to 940
Tensile Strength: Yield (Proof), MPa		290 to 310

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		250

Melting Completion (Liquidus), °C		1360
Melting Completion (Liquidus), °C		1460 to 1470

Melting Onset (Solidus), °C		1290
Melting Onset (Solidus), °C		1420

Specific Heat Capacity, J/kg-K		450
Specific Heat Capacity, J/kg-K		470

Thermal Conductivity, W/m-K		13
Thermal Conductivity, W/m-K		52 to 53

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		2.0
Electrical Conductivity: Equal Volume, % IACS		7.0

Electrical Conductivity: Equal Weight (Specific), % IACS		2.1
Electrical Conductivity: Equal Weight (Specific), % IACS		8.0 to 8.1

Otherwise Unclassified Properties

Density, g/cm³		8.4
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		8.2
Embodied Carbon, kg CO₂/kg material		1.4

Embodied Energy, MJ/kg		110
Embodied Energy, MJ/kg		18

Embodied Water, L/kg		530
Embodied Water, L/kg		45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		140 to 190
Resilience: Ultimate (Unit Rupture Work), MJ/m³		140 to 160

Resilience: Unit (Modulus of Resilience), kJ/m³		780 to 2000
Resilience: Unit (Modulus of Resilience), kJ/m³		230 to 250

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

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

Strength to Weight: Axial, points		33 to 44
Strength to Weight: Axial, points		17 to 19

Strength to Weight: Bending, points		27 to 32
Strength to Weight: Bending, points		17 to 19

Thermal Diffusivity, mm²/s		3.5
Thermal Diffusivity, mm²/s		14

Thermal Shock Resistance, points		24 to 32
Thermal Shock Resistance, points		15 to 17