Heat Treated Cast R30075 Alloy
Cobalt Alloys
Property Overview
Density8.4g/cm³
Elastic Modulus220GPa
Tensile Strength960MPa
Yield Strength500MPa
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0 to 0.35%
CR
27 to 30%
NI
0 to 0.5%
MO
5.0 to 7.0%
MN
0 to 1.0%
SI
0 to 1.0%
N
0 to 0.25%
P
0 to 0.020%
S
0 to 0.010%
TI
0 to 0.1%
AL
0 to 0.1%
CO
58.7 to 68%
W
0 to 0.2%
B
0 to 0.010%
FE
0 to 0.75%
Mechanical
Elastic (Young's, Tensile) Modulus
220 GPa
Elongation at Break
12 %
Fatigue Strength
250 MPa
Poisson's Ratio
0.29
Reduction in Area
20 %
Shear Modulus
87 GPa
Tensile Strength: Ultimate (UTS)
960 MPa
Tensile Strength: Yield (Proof)
500 MPa
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
3.5 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
25 points
Electrical
Electrical Conductivity: Equal Volume
2.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.1 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
99 MJ/m 3
Resilience: Unit (Modulus of Resilience)
560 kJ/m 3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
32 points
Strength to Weight: Bending
26 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
Heat Treated Cast R30075 AlloyR30075
Standards
ASTM F75 ASTM F75: Standard Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Castings and Casting Alloy for Surgical Implants (UNS R30075)
ASTM F75 ASTM F75: Standard Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Castings and Casting Alloy for Surgical Implants (UNS R30075) ISO 5832-4: Implants for Surgery - Metallic Materials - Part 4: Cobalt-Chromium-Molybdenum Casting Alloy
ISO 5832-4 ISO 5832-4: Implants for Surgery - Metallic Materials - Part 4: Cobalt-Chromium-Molybdenum Casting Alloy