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CC761S Brass vs. CR021A Copper

Both CC761S brass and CR021A copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 81% of their average alloy composition in common. There are 28 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 CC761S brass and the bottom bar is CR021A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 8.7
15
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
43
Tensile Strength: Ultimate (UTS), MPa 540
230
Tensile Strength: Yield (Proof), MPa 340
140

Thermal Properties

Latent Heat of Fusion, J/g 260
210
Maximum Temperature: Mechanical, °C 170
200
Melting Completion (Liquidus), °C 960
1090
Melting Onset (Solidus), °C 910
1040
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 27
380
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
98
Electrical Conductivity: Equal Weight (Specific), % IACS 43
99

Otherwise Unclassified Properties

Base Metal Price, % relative 27
31
Density, g/cm3 8.3
9.0
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 45
41
Embodied Water, L/kg 300
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
31
Resilience: Unit (Modulus of Resilience), kJ/m3 530
83
Stiffness to Weight: Axial, points 7.4
7.2
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 18
7.1
Strength to Weight: Bending, points 18
9.3
Thermal Diffusivity, mm2/s 8.0
110
Thermal Shock Resistance, points 19
8.1

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Antimony (Sb), % 0 to 0.050
0
Bismuth (Bi), % 0
0 to 0.00050
Copper (Cu), % 78 to 83
99.95 to 99.998
Iron (Fe), % 0 to 0.6
0
Lead (Pb), % 0 to 0.8
0 to 0.0050
Manganese (Mn), % 0 to 0.2
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.030
0.0020 to 0.0070
Silicon (Si), % 3.0 to 5.0
0
Silver (Ag), % 0
0 to 0.015
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 8.9 to 19
0