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C87900 Brass vs. R30008 Cobalt

C87900 brass belongs to the copper alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 22 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 C87900 brass and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 25
1.1 to 73
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
83
Tensile Strength: Ultimate (UTS), MPa 480
950 to 1700
Tensile Strength: Yield (Proof), MPa 240
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Melting Completion (Liquidus), °C 930
1400
Melting Onset (Solidus), °C 900
1330
Specific Heat Capacity, J/kg-K 390
450
Thermal Expansion, µm/m-K 20
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
95
Density, g/cm3 8.1
8.4
Embodied Carbon, kg CO2/kg material 2.7
8.1
Embodied Energy, MJ/kg 46
110
Embodied Water, L/kg 320
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 270
590 to 2720
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 17
31 to 56
Strength to Weight: Bending, points 17
25 to 37
Thermal Shock Resistance, points 16
25 to 44

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Antimony (Sb), % 0 to 0.050
0
Arsenic (As), % 0 to 0.050
0
Boron (B), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 63 to 69.2
0
Iron (Fe), % 0 to 0.4
7.6 to 20
Lead (Pb), % 0 to 0.25
0
Manganese (Mn), % 0 to 0.15
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 0 to 0.5
15 to 18
Phosphorus (P), % 0 to 0.010
0 to 0.015
Silicon (Si), % 0.8 to 1.2
0 to 1.2
Sulfur (S), % 0 to 0.050
0 to 0.015
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 30 to 36
0