MakeItFrom.com
Menu (ESC)

R30075 Cobalt vs. R30816 Cobalt

Both R30075 cobalt and R30816 cobalt are cobalt alloys. They have 71% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
210
Elongation at Break, % 12
23
Fatigue Strength, MPa 250 to 840
250
Poisson's Ratio 0.29
0.3
Reduction in Area, % 20
22
Shear Modulus, GPa 82 to 98
81
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
1020
Tensile Strength: Yield (Proof), MPa 480 to 840
460

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1360
1540
Melting Onset (Solidus), °C 1290
1460
Specific Heat Capacity, J/kg-K 450
420
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
9.1
Embodied Carbon, kg CO2/kg material 8.1
20
Embodied Energy, MJ/kg 110
320
Embodied Water, L/kg 530
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
190
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
510
Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
22
Strength to Weight: Axial, points 26 to 42
31
Strength to Weight: Bending, points 22 to 31
25
Thermal Diffusivity, mm2/s 3.5
3.3
Thermal Shock Resistance, points 21 to 29
28

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0.32 to 0.42
Chromium (Cr), % 27 to 30
19 to 21
Cobalt (Co), % 58.7 to 68
40 to 49.8
Iron (Fe), % 0 to 0.75
0 to 5.0
Manganese (Mn), % 0 to 1.0
1.0 to 2.0
Molybdenum (Mo), % 5.0 to 7.0
3.5 to 4.5
Nickel (Ni), % 0 to 0.5
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
3.5 to 4.5