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G-CoCr28 Cobalt vs. C47940 Brass

G-CoCr28 cobalt belongs to the cobalt alloys classification, while C47940 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is G-CoCr28 cobalt and the bottom bar is C47940 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
100
Elongation at Break, % 6.7
14 to 34
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 83
40
Tensile Strength: Ultimate (UTS), MPa 560
380 to 520
Tensile Strength: Yield (Proof), MPa 260
160 to 390

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Maximum Temperature: Mechanical, °C 1200
130
Melting Completion (Liquidus), °C 1330
850
Melting Onset (Solidus), °C 1270
800
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 8.5
110
Thermal Expansion, µm/m-K 14
20

Otherwise Unclassified Properties

Base Metal Price, % relative 100
25
Density, g/cm3 8.1
8.2
Embodied Carbon, kg CO2/kg material 6.2
2.8
Embodied Energy, MJ/kg 84
47
Embodied Water, L/kg 440
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31
68 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 160
120 to 740
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 19
13 to 17
Strength to Weight: Bending, points 19
14 to 17
Thermal Diffusivity, mm2/s 2.2
36
Thermal Shock Resistance, points 14
13 to 17

Alloy Composition

Carbon (C), % 0.050 to 0.25
0
Chromium (Cr), % 27 to 30
0
Cobalt (Co), % 48 to 52
0
Copper (Cu), % 0
63 to 66
Iron (Fe), % 9.7 to 24.5
0.1 to 1.0
Lead (Pb), % 0
1.0 to 2.0
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0.1 to 0.5
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.5 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
1.2 to 2.0
Zinc (Zn), % 0
28.1 to 34.6
Residuals, % 0
0 to 0.4