MakeItFrom.com
Menu (ESC)

R31538 Cobalt vs. C51900 Bronze

R31538 cobalt belongs to the cobalt alloys classification, while C51900 bronze belongs to the copper alloys. There are 26 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 R31538 cobalt and the bottom bar is C51900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 13 to 23
14 to 29
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
42
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
380 to 620
Tensile Strength: Yield (Proof), MPa 580 to 930
390 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1360
1040
Melting Onset (Solidus), °C 1290
930
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 13
66
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
14
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
14

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 8.1
3.2
Embodied Energy, MJ/kg 110
51
Embodied Water, L/kg 530
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
55 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
680 to 1450
Stiffness to Weight: Axial, points 15
7.0
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
12 to 19
Strength to Weight: Bending, points 27 to 32
13 to 18
Thermal Diffusivity, mm2/s 3.5
20
Thermal Shock Resistance, points 25 to 33
14 to 22

Alloy Composition

Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
91.7 to 95
Iron (Fe), % 0 to 0.75
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0.030 to 0.35
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
5.0 to 7.0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.5