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CC751S Brass vs. CC765S Brass

Both CC751S brass and CC765S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is CC751S brass and the bottom bar is CC765S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
130
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 5.6
21
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 450
540
Tensile Strength: Yield (Proof), MPa 320
220

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 130
140
Melting Completion (Liquidus), °C 850
860
Melting Onset (Solidus), °C 810
820
Specific Heat Capacity, J/kg-K 390
400
Thermal Conductivity, W/m-K 110
91
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
30
Electrical Conductivity: Equal Weight (Specific), % IACS 28
34

Otherwise Unclassified Properties

Base Metal Price, % relative 24
24
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
51
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
90
Resilience: Unit (Modulus of Resilience), kJ/m3 480
220
Stiffness to Weight: Axial, points 7.2
7.6
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 15
19
Strength to Weight: Bending, points 16
18
Thermal Diffusivity, mm2/s 35
28
Thermal Shock Resistance, points 15
17

Alloy Composition

Aluminum (Al), % 0 to 0.1
0.5 to 2.5
Antimony (Sb), % 0 to 0.5
0 to 0.080
Copper (Cu), % 62.7 to 66
51 to 65
Iron (Fe), % 0.25 to 0.5
0.5 to 2.0
Lead (Pb), % 0.8 to 2.2
0 to 0.5
Manganese (Mn), % 0 to 0.15
0.3 to 3.0
Nickel (Ni), % 0 to 0.8
0 to 6.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.65 to 1.1
0 to 0.1
Tin (Sn), % 0 to 0.8
0 to 1.0
Zinc (Zn), % 27.9 to 35.6
19.8 to 47.7