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R30012 Cobalt vs. R30003 Cobalt

Both R30012 cobalt and R30003 cobalt are cobalt alloys. They have 64% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30012 cobalt and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 1.0
10 to 73
Fatigue Strength, MPa 320
320 to 560
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 86
83
Tensile Strength: Ultimate (UTS), MPa 830
970 to 1720
Tensile Strength: Yield (Proof), MPa 650
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 320
310
Melting Completion (Liquidus), °C 1470
1400
Melting Onset (Solidus), °C 1280
1440
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.4
Embodied Carbon, kg CO2/kg material 8.3
8.0
Embodied Energy, MJ/kg 120
110
Embodied Water, L/kg 480
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 960
600 to 2790
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 26
32 to 57
Strength to Weight: Bending, points 22
26 to 38
Thermal Diffusivity, mm2/s 3.8
3.3
Thermal Shock Resistance, points 23
26 to 45

Alloy Composition

Boron (B), % 0
0 to 0.1
Carbon (C), % 1.4 to 2.0
0 to 0.15
Chromium (Cr), % 27 to 32
19 to 21
Cobalt (Co), % 47.5 to 64.1
39 to 41
Iron (Fe), % 0 to 3.0
10 to 20.5
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 0 to 1.0
6.0 to 8.0
Nickel (Ni), % 0 to 3.0
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 2.0
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 7.5 to 9.5
0