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CR023A Copper vs. C84200 Brass

Both CR023A copper and C84200 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 80% of their average alloy composition in common.

For each property being compared, the top bar is CR023A copper and the bottom bar is C84200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 15
15
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 43
40
Tensile Strength: Ultimate (UTS), MPa 220
250
Tensile Strength: Yield (Proof), MPa 130
120

Thermal Properties

Latent Heat of Fusion, J/g 210
180
Maximum Temperature: Mechanical, °C 200
150
Melting Completion (Liquidus), °C 1090
990
Melting Onset (Solidus), °C 1040
840
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 380
72
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
16
Electrical Conductivity: Equal Weight (Specific), % IACS 100
17

Otherwise Unclassified Properties

Base Metal Price, % relative 31
30
Density, g/cm3 9.0
8.5
Embodied Carbon, kg CO2/kg material 2.6
3.1
Embodied Energy, MJ/kg 41
51
Embodied Water, L/kg 320
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
31
Resilience: Unit (Modulus of Resilience), kJ/m3 76
72
Stiffness to Weight: Axial, points 7.2
6.9
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 6.8
8.2
Strength to Weight: Bending, points 9.0
10
Thermal Diffusivity, mm2/s 110
23
Thermal Shock Resistance, points 7.8
9.1

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Bismuth (Bi), % 0 to 0.00050
0
Copper (Cu), % 99.9 to 99.995
78 to 82
Iron (Fe), % 0
0 to 0.4
Lead (Pb), % 0 to 0.0050
2.0 to 3.0
Nickel (Ni), % 0
0 to 0.8
Phosphorus (P), % 0.0050 to 0.013
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0
10 to 16
Residuals, % 0
0 to 0.7