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C68400 Brass vs. C72700 Copper-nickel

Both C68400 brass and C72700 copper-nickel are copper alloys. They have 63% of their average alloy composition in common. There are 29 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 C68400 brass and the bottom bar is C72700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 18
4.0 to 36
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 41
44
Shear Strength, MPa 330
310 to 620
Tensile Strength: Ultimate (UTS), MPa 540
460 to 1070
Tensile Strength: Yield (Proof), MPa 310
580 to 1060

Thermal Properties

Latent Heat of Fusion, J/g 210
210
Maximum Temperature: Mechanical, °C 130
200
Melting Completion (Liquidus), °C 840
1100
Melting Onset (Solidus), °C 820
930
Specific Heat Capacity, J/kg-K 400
380
Thermal Conductivity, W/m-K 66
54
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
11
Electrical Conductivity: Equal Weight (Specific), % IACS 99
11

Otherwise Unclassified Properties

Base Metal Price, % relative 23
36
Density, g/cm3 7.9
8.8
Embodied Carbon, kg CO2/kg material 2.7
4.0
Embodied Energy, MJ/kg 47
62
Embodied Water, L/kg 320
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
20 to 380
Resilience: Unit (Modulus of Resilience), kJ/m3 460
1420 to 4770
Stiffness to Weight: Axial, points 7.5
7.4
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 19
14 to 34
Strength to Weight: Bending, points 19
15 to 26
Thermal Diffusivity, mm2/s 21
16
Thermal Shock Resistance, points 18
16 to 38

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Copper (Cu), % 59 to 64
82.1 to 86
Iron (Fe), % 0 to 1.0
0 to 0.5
Lead (Pb), % 0 to 0.090
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0.2 to 1.5
0.050 to 0.3
Nickel (Ni), % 0 to 0.5
8.5 to 9.5
Niobium (Nb), % 0
0 to 0.1
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0
Tin (Sn), % 0 to 0.5
5.5 to 6.5
Zinc (Zn), % 28.6 to 39.3
0 to 0.5
Residuals, % 0 to 0.5
0 to 0.3