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R60704 Alloy vs. R30816 Cobalt

R60704 alloy belongs to the otherwise unclassified metals classification, while R30816 cobalt belongs to the cobalt alloys. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R60704 alloy and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 97
210
Elongation at Break, % 16
23
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 36
81
Tensile Strength: Ultimate (UTS), MPa 470
1020
Tensile Strength: Yield (Proof), MPa 270
460

Thermal Properties

Latent Heat of Fusion, J/g 240
300
Specific Heat Capacity, J/kg-K 270
420
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 6.0
12

Otherwise Unclassified Properties

Density, g/cm3 6.7
9.1
Embodied Water, L/kg 460
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 64
190
Resilience: Unit (Modulus of Resilience), kJ/m3 370
510
Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 23
22
Strength to Weight: Axial, points 20
31
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 12
3.3
Thermal Shock Resistance, points 58
28

Alloy Composition

Carbon (C), % 0 to 0.050
0.32 to 0.42
Chromium (Cr), % 0.2 to 0.4
19 to 21
Cobalt (Co), % 0
40 to 49.8
Hafnium (Hf), % 0 to 4.5
0
Hydrogen (H), % 0 to 0.0050
0
Iron (Fe), % 0.2 to 0.4
0 to 5.0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Nitrogen (N), % 0 to 0.025
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tin (Sn), % 1.0 to 2.0
0
Tungsten (W), % 0
3.5 to 4.5
Zirconium (Zr), % 93 to 98.8
0