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C18200 Copper vs. C36200 Brass

Both C18200 copper and C36200 brass are copper alloys. They have 62% of their average alloy composition in common.

For each property being compared, the top bar is C18200 copper and the bottom bar is C36200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
100
Elongation at Break, % 11 to 40
20 to 53
Poisson's Ratio 0.34
0.31
Rockwell B Hardness 65 to 82
62 to 78
Shear Modulus, GPa 44
39
Shear Strength, MPa 210 to 320
210 to 240
Tensile Strength: Ultimate (UTS), MPa 310 to 530
340 to 420
Tensile Strength: Yield (Proof), MPa 97 to 450
130 to 360

Thermal Properties

Latent Heat of Fusion, J/g 210
170
Maximum Temperature: Mechanical, °C 200
120
Melting Completion (Liquidus), °C 1080
900
Melting Onset (Solidus), °C 1070
890
Specific Heat Capacity, J/kg-K 390
380
Thermal Conductivity, W/m-K 320
120
Thermal Expansion, µm/m-K 18
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
26
Electrical Conductivity: Equal Weight (Specific), % IACS 81
28

Otherwise Unclassified Properties

Base Metal Price, % relative 31
23
Density, g/cm3 8.9
8.2
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 41
45
Embodied Water, L/kg 310
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 43 to 96
74 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 40 to 860
89 to 630
Stiffness to Weight: Axial, points 7.3
6.9
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.6 to 16
11 to 14
Strength to Weight: Bending, points 11 to 16
13 to 15
Thermal Diffusivity, mm2/s 93
37
Thermal Shock Resistance, points 11 to 18
11 to 14

Alloy Composition

Chromium (Cr), % 0.6 to 1.2
0
Copper (Cu), % 98.6 to 99.4
60 to 63
Iron (Fe), % 0 to 0.1
0 to 0.15
Lead (Pb), % 0 to 0.050
3.5 to 4.5
Silicon (Si), % 0 to 0.1
0
Zinc (Zn), % 0
32.4 to 36.5