Warm Worked Low Carbon Co-28Cr-6Mo Alloy

Cobalt Alloys

Overview Chemical Composition Mechanical Properties Physical Properties Other Properties

Property Overview

Density8.4g/cm³

Elastic Modulus220GPa

Tensile Strength1340MPa

Yield Strength940MPa

Brinell HardnessUnknown

Maximum Service TemperatureUnknown

Weight Calculator

Chemical Composition

0 to 0.14%

26 to 30%

0 to 1.0%

5.0 to 7.0%

0 to 1.0%

0 to 0.25%

58.9 to 69%

0 to 0.75%

Mechanical

Elastic (Young's, Tensile) Modulus

220 GPa

Elongation at Break

14 %

Fatigue Strength

480 MPa

Poisson's Ratio

0.29

Reduction in Area

14 %

Shear Modulus

87 GPa

Tensile Strength: Ultimate (UTS)

1340 MPa

Tensile Strength: Yield (Proof)

940 MPa

Hardness

Rockwell C Hardness

Physical

Density

8.4 g/cm 3

Thermal

Latent Heat of Fusion

320 J/g

Melting Completion (Liquidus)

1360 °C

Melting Onset (Solidus)

1290 °C

Specific Heat Capacity

450 J/kg-K

Thermal Conductivity

13 W/m-K

Thermal Diffusivity

3.4 mm 2 /s

Thermal Expansion

13 µm/m-K

Thermal Shock Resistance

32 points

Electrical

Electrical Conductivity: Equal Volume

2.0 % IACS

Electrical Conductivity: Equal Weight (Specific)

2.1 % IACS

Calculated

Resilience: Ultimate (Unit Rupture Work)

160 MJ/m 3

Resilience: Unit (Modulus of Resilience)

1990 kJ/m 3

Stiffness to Weight: Axial

15 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

44 points

Strength to Weight: Bending

32 points

Environmental

Embodied Carbon

8.1 kg CO 2 /kg material

Embodied Energy

110 MJ/kg

Embodied Energy

110 MJ/kg 46 x 10 3 BTU/lb

Embodied Water

530 L/kg

Embodied Water

530 L/kg 63 gal/lb

Registered Designations & Aliases

R31537Warm Worked Low Carbon Co-28Cr-6Mo Alloy

Standards

ASTM F1537 ASTM F1537: Standard Specification for Wrought Cobalt-28Chromium-6Molybdenum Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539)

ASTM F799 ASTM F799: Standard Specification for Cobalt-28Chromium-6Molybdenum Alloy Forgings for Surgical Implants (UNS R31537, R31538, R31539)

ISO 5832-12 ISO 5832-12: Implants for Surgery - Metallic Materials - Part 12: Wrought Cobalt-Chromium-Molybdenum Alloy

ISO 5832-12 ISO 5832-12: Implants for Surgery - Metallic Materials - Part 12: Wrought Cobalt-Chromium-Molybdenum Alloy ASTM F1537: Standard Specification for Wrought Cobalt-28Chromium-6Molybdenum Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539) ASTM F799: Standard Specification for Cobalt-28Chromium-6Molybdenum Alloy Forgings for Surgical Implants (UNS R31537, R31538, R31539)