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Nickel 908 vs. R30006 Cobalt

Nickel 908 belongs to the nickel alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 25 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 nickel 908 and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
220
Elongation at Break, % 11
1.0
Fatigue Strength, MPa 450
260
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 70
85
Tensile Strength: Ultimate (UTS), MPa 1340
900
Tensile Strength: Yield (Proof), MPa 930
540

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1380
1290
Specific Heat Capacity, J/kg-K 460
450
Thermal Conductivity, W/m-K 11
15
Thermal Expansion, µm/m-K 8.6
11

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.6
Embodied Carbon, kg CO2/kg material 9.3
7.8
Embodied Energy, MJ/kg 140
110
Embodied Water, L/kg 170
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 2340
670
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 45
29
Strength to Weight: Bending, points 33
24
Thermal Diffusivity, mm2/s 2.9
3.9
Thermal Shock Resistance, points 61
26

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0 to 0.012
0
Carbon (C), % 0 to 0.030
0.9 to 1.4
Chromium (Cr), % 3.8 to 4.5
27 to 32
Cobalt (Co), % 0 to 0.5
48.6 to 68.1
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 35.6 to 44.6
0 to 3.0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 47 to 51
0 to 3.0
Niobium (Nb), % 2.7 to 3.3
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.5
0 to 2.0
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 1.2 to 1.8
0
Tungsten (W), % 0
4.0 to 6.0