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C16500 Copper vs. C21000 Brass

Both C16500 copper and C21000 brass are copper alloys. They have a very high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C16500 copper and the bottom bar is C21000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 1.5 to 53
2.9 to 50
Poisson's Ratio 0.34
0.34
Rockwell Superficial 30T Hardness 67 to 73
44 to 68
Shear Modulus, GPa 43
43
Shear Strength, MPa 200 to 310
180 to 280
Tensile Strength: Ultimate (UTS), MPa 280 to 530
240 to 450
Tensile Strength: Yield (Proof), MPa 97 to 520
69 to 440

Thermal Properties

Latent Heat of Fusion, J/g 210
200
Maximum Temperature: Mechanical, °C 340
190
Melting Completion (Liquidus), °C 1070
1070
Melting Onset (Solidus), °C 1010
1050
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 250
230
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
56
Electrical Conductivity: Equal Weight (Specific), % IACS 61
57

Otherwise Unclassified Properties

Base Metal Price, % relative 31
30
Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 42
42
Embodied Water, L/kg 320
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8 to 110
13 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 41 to 1160
21 to 830
Stiffness to Weight: Axial, points 7.1
7.2
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 8.6 to 17
7.4 to 14
Strength to Weight: Bending, points 11 to 16
9.6 to 15
Thermal Diffusivity, mm2/s 74
69
Thermal Shock Resistance, points 9.8 to 19
8.1 to 15

Alloy Composition

Cadmium (Cd), % 0.6 to 1.0
0
Copper (Cu), % 97.8 to 98.9
94 to 96
Iron (Fe), % 0 to 0.020
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Tin (Sn), % 0.5 to 0.7
0
Zinc (Zn), % 0
3.7 to 6.0
Residuals, % 0
0 to 0.2

Comparable Variants