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CC761S Brass vs. C85900 Brass

Both CC761S brass and C85900 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 75% of their average alloy composition in common.

For each property being compared, the top bar is CC761S brass and the bottom bar is C85900 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
85
Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 8.7
30
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 540
460
Tensile Strength: Yield (Proof), MPa 340
190

Thermal Properties

Latent Heat of Fusion, J/g 260
170
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 960
830
Melting Onset (Solidus), °C 910
790
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 27
89
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
25
Electrical Conductivity: Equal Weight (Specific), % IACS 43
28

Otherwise Unclassified Properties

Base Metal Price, % relative 27
24
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.9
Embodied Energy, MJ/kg 45
49
Embodied Water, L/kg 300
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
110
Resilience: Unit (Modulus of Resilience), kJ/m3 530
170
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 18
16
Strength to Weight: Bending, points 18
17
Thermal Diffusivity, mm2/s 8.0
29
Thermal Shock Resistance, points 19
16

Alloy Composition

Aluminum (Al), % 0 to 0.1
0.1 to 0.6
Antimony (Sb), % 0 to 0.050
0 to 0.2
Boron (B), % 0
0 to 0.2
Copper (Cu), % 78 to 83
58 to 62
Iron (Fe), % 0 to 0.6
0 to 0.5
Lead (Pb), % 0 to 0.8
0 to 0.090
Manganese (Mn), % 0 to 0.2
0 to 0.010
Nickel (Ni), % 0 to 1.0
0 to 1.5
Phosphorus (P), % 0 to 0.030
0 to 0.010
Silicon (Si), % 3.0 to 5.0
0 to 0.25
Sulfur (S), % 0
0.1 to 0.65
Tin (Sn), % 0 to 0.3
0 to 1.5
Zinc (Zn), % 8.9 to 19
31 to 41
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.7