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C21000 Brass vs. C99300 Copper

Both C21000 brass and C99300 copper are copper alloys. They have 72% of their average alloy composition in common. There are 28 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 C21000 brass and the bottom bar is C99300 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 2.9 to 50
2.0
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
46
Tensile Strength: Ultimate (UTS), MPa 240 to 450
660
Tensile Strength: Yield (Proof), MPa 69 to 440
380

Thermal Properties

Latent Heat of Fusion, J/g 200
240
Maximum Temperature: Mechanical, °C 190
250
Melting Completion (Liquidus), °C 1070
1080
Melting Onset (Solidus), °C 1050
1070
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 230
43
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 57
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 30
35
Density, g/cm3 8.8
8.2
Embodied Carbon, kg CO2/kg material 2.6
4.5
Embodied Energy, MJ/kg 42
70
Embodied Water, L/kg 310
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
11
Resilience: Unit (Modulus of Resilience), kJ/m3 21 to 830
590
Stiffness to Weight: Axial, points 7.2
8.3
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 7.4 to 14
22
Strength to Weight: Bending, points 9.6 to 15
20
Thermal Diffusivity, mm2/s 69
12
Thermal Shock Resistance, points 8.1 to 15
22

Alloy Composition

Aluminum (Al), % 0
10.7 to 11.5
Cobalt (Co), % 0
1.0 to 2.0
Copper (Cu), % 94 to 96
68.6 to 74.4
Iron (Fe), % 0 to 0.050
0.4 to 1.0
Lead (Pb), % 0 to 0.030
0 to 0.020
Nickel (Ni), % 0
13.5 to 16.5
Silicon (Si), % 0
0 to 0.020
Tin (Sn), % 0
0 to 0.050
Zinc (Zn), % 3.7 to 6.0
0
Residuals, % 0
0 to 0.3