MakeItFrom.com
Menu (ESC)

R31537 Cobalt vs. Nickel 908

R31537 cobalt belongs to the cobalt alloys classification, while nickel 908 belongs to the nickel alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R31537 cobalt and the bottom bar is nickel 908.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
180
Elongation at Break, % 14 to 23
11
Fatigue Strength, MPa 310 to 480
450
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 87
70
Tensile Strength: Ultimate (UTS), MPa 1000 to 1340
1340
Tensile Strength: Yield (Proof), MPa 590 to 940
930

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1290
1380
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
11
Thermal Expansion, µm/m-K 13
8.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 8.1
9.3
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 530
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
140
Resilience: Unit (Modulus of Resilience), kJ/m3 780 to 1990
2340
Stiffness to Weight: Axial, points 15
12
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 33 to 44
45
Strength to Weight: Bending, points 26 to 32
33
Thermal Diffusivity, mm2/s 3.4
2.9
Thermal Shock Resistance, points 24 to 32
61

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.3
Boron (B), % 0
0 to 0.012
Carbon (C), % 0 to 0.14
0 to 0.030
Chromium (Cr), % 26 to 30
3.8 to 4.5
Cobalt (Co), % 58.9 to 69
0 to 0.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
35.6 to 44.6
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
47 to 51
Niobium (Nb), % 0
2.7 to 3.3
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0
1.2 to 1.8