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CC751S Brass vs. CC750S Brass

Both CC751S brass and CC750S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is CC751S brass and the bottom bar is CC750S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
54
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 5.6
13
Poisson's Ratio 0.31
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 450
200
Tensile Strength: Yield (Proof), MPa 320
80

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 130
130
Melting Completion (Liquidus), °C 850
860
Melting Onset (Solidus), °C 810
810
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 110
110
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
24
Electrical Conductivity: Equal Weight (Specific), % IACS 28
26

Otherwise Unclassified Properties

Base Metal Price, % relative 24
25
Density, g/cm3 8.1
8.2
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 46
46
Embodied Water, L/kg 330
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
22
Resilience: Unit (Modulus of Resilience), kJ/m3 480
30
Stiffness to Weight: Axial, points 7.2
7.1
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 15
6.8
Strength to Weight: Bending, points 16
9.3
Thermal Diffusivity, mm2/s 35
35
Thermal Shock Resistance, points 15
6.7

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.1
Antimony (Sb), % 0 to 0.5
0
Copper (Cu), % 62.7 to 66
62 to 67
Iron (Fe), % 0.25 to 0.5
0 to 0.8
Lead (Pb), % 0.8 to 2.2
1.0 to 3.0
Manganese (Mn), % 0 to 0.15
0 to 0.2
Nickel (Ni), % 0 to 0.8
0 to 1.0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0.65 to 1.1
0 to 0.050
Tin (Sn), % 0 to 0.8
0 to 1.5
Zinc (Zn), % 27.9 to 35.6
26.3 to 36