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EN 2.4964 Cobalt vs. C91700 Bronze

EN 2.4964 cobalt belongs to the cobalt alloys classification, while C91700 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is C91700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 40
13
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
41
Tensile Strength: Ultimate (UTS), MPa 960
330
Tensile Strength: Yield (Proof), MPa 390
170

Thermal Properties

Latent Heat of Fusion, J/g 290
190
Melting Completion (Liquidus), °C 1630
1020
Melting Onset (Solidus), °C 1550
850
Specific Heat Capacity, J/kg-K 400
370
Thermal Conductivity, W/m-K 15
71
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
10
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
10

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.7
Embodied Carbon, kg CO2/kg material 9.8
3.9
Embodied Energy, MJ/kg 140
63
Embodied Water, L/kg 450
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
35
Resilience: Unit (Modulus of Resilience), kJ/m3 340
140
Stiffness to Weight: Axial, points 13
6.9
Stiffness to Weight: Bending, points 21
18
Strength to Weight: Axial, points 28
11
Strength to Weight: Bending, points 23
12
Thermal Diffusivity, mm2/s 3.9
22
Thermal Shock Resistance, points 25
12

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 58
0
Copper (Cu), % 0
84.2 to 87.5
Iron (Fe), % 0 to 3.0
0 to 0.2
Lead (Pb), % 0
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 11
1.2 to 2.0
Phosphorus (P), % 0 to 0.020
0 to 0.3
Silicon (Si), % 0 to 0.4
0 to 0.0050
Sulfur (S), % 0 to 0.015
0 to 0.050
Tin (Sn), % 0
11.3 to 12.5
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.25