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EN 2.4964 Cobalt vs. ASTM B541 Gold

EN 2.4964 cobalt belongs to the cobalt alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 21 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 EN 2.4964 cobalt and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 40
6.0 to 14
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 86
38
Tensile Strength: Ultimate (UTS), MPa 960
670 to 1180
Tensile Strength: Yield (Proof), MPa 390
480 to 900

Thermal Properties

Latent Heat of Fusion, J/g 290
90
Melting Completion (Liquidus), °C 1630
1110
Melting Onset (Solidus), °C 1550
930
Specific Heat Capacity, J/kg-K 400
170
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.7 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm3 9.6
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
65 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 340
1090 to 3830
Stiffness to Weight: Axial, points 13
3.4
Stiffness to Weight: Bending, points 21
9.0
Strength to Weight: Axial, points 28
11 to 19
Strength to Weight: Bending, points 23
9.8 to 14
Thermal Shock Resistance, points 25
36 to 63

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 0 to 3.0
0
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.020
0
Platinum (Pt), % 0
8.0 to 9.0
Silicon (Si), % 0 to 0.4
0
Silver (Ag), % 0
4.0 to 5.0
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0.7 to 1.3
Residuals, % 0
0 to 0.4