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R30006 Cobalt vs. ASTM B522 Class II

R30006 cobalt belongs to the cobalt alloys classification, while ASTM B522 class II belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is ASTM B522 class II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
96
Elongation at Break, % 1.0
1.1 to 28
Poisson's Ratio 0.28
0.41
Shear Modulus, GPa 85
34
Tensile Strength: Ultimate (UTS), MPa 900
280 to 490
Tensile Strength: Yield (Proof), MPa 540
120 to 210

Thermal Properties

Latent Heat of Fusion, J/g 320
77
Melting Completion (Liquidus), °C 1400
1030
Melting Onset (Solidus), °C 1290
1030
Specific Heat Capacity, J/kg-K 450
160
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
11
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
5.7

Otherwise Unclassified Properties

Density, g/cm3 8.6
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
4.4 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 670
75 to 230
Stiffness to Weight: Axial, points 14
3.1
Stiffness to Weight: Bending, points 23
8.9
Strength to Weight: Axial, points 29
4.4 to 7.8
Strength to Weight: Bending, points 24
5.5 to 8.0
Thermal Shock Resistance, points 26
13 to 24

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Gold (Au), % 0
68.5 to 69.5
Iron (Fe), % 0 to 3.0
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Platinum (Pt), % 0
5.5 to 6.5
Silicon (Si), % 0 to 2.0
0
Silver (Ag), % 0
24.5 to 25.5
Sulfur (S), % 0
0 to 0.010
Tungsten (W), % 4.0 to 6.0
0
Residuals, % 0
0 to 0.26