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C21000 Brass vs. C72800 Copper-nickel

Both C21000 brass and C72800 copper-nickel are copper alloys. They have 81% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C21000 brass and the bottom bar is C72800 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 2.9 to 50
3.9 to 23
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
44
Shear Strength, MPa 180 to 280
330 to 740
Tensile Strength: Ultimate (UTS), MPa 240 to 450
520 to 1270
Tensile Strength: Yield (Proof), MPa 69 to 440
250 to 1210

Thermal Properties

Latent Heat of Fusion, J/g 200
210
Maximum Temperature: Mechanical, °C 190
200
Melting Completion (Liquidus), °C 1070
1080
Melting Onset (Solidus), °C 1050
920
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 230
55
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
11
Electrical Conductivity: Equal Weight (Specific), % IACS 57
11

Otherwise Unclassified Properties

Base Metal Price, % relative 30
38
Density, g/cm3 8.8
8.8
Embodied Carbon, kg CO2/kg material 2.6
4.4
Embodied Energy, MJ/kg 42
68
Embodied Water, L/kg 310
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 100
37 to 99
Resilience: Unit (Modulus of Resilience), kJ/m3 21 to 830
260 to 5650
Stiffness to Weight: Axial, points 7.2
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.4 to 14
17 to 40
Strength to Weight: Bending, points 9.6 to 15
16 to 30
Thermal Diffusivity, mm2/s 69
17
Thermal Shock Resistance, points 8.1 to 15
19 to 45

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Antimony (Sb), % 0
0 to 0.020
Bismuth (Bi), % 0
0 to 0.0010
Boron (B), % 0
0 to 0.0010
Copper (Cu), % 94 to 96
78.3 to 82.8
Iron (Fe), % 0 to 0.050
0 to 0.5
Lead (Pb), % 0 to 0.030
0 to 0.0050
Magnesium (Mg), % 0
0.0050 to 0.15
Manganese (Mn), % 0
0.050 to 0.3
Nickel (Ni), % 0
9.5 to 10.5
Niobium (Nb), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.050
Sulfur (S), % 0
0 to 0.0025
Tin (Sn), % 0
7.5 to 8.5
Titanium (Ti), % 0
0 to 0.010
Zinc (Zn), % 3.7 to 6.0
0 to 1.0
Residuals, % 0
0 to 0.3

Comparable Variants