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O60 C18900 Copper vs. O60 C61300 Bronze

Both O60 C18900 copper and O60 C61300 bronze are copper alloys. Both are furnished in the O60 (soft annealed) temper. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is O60 C18900 copper and the bottom bar is O60 C61300 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 48
40
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
43
Shear Strength, MPa 190
380
Tensile Strength: Ultimate (UTS), MPa 260
550
Tensile Strength: Yield (Proof), MPa 67
230

Thermal Properties

Latent Heat of Fusion, J/g 210
220
Maximum Temperature: Mechanical, °C 200
210
Melting Completion (Liquidus), °C 1080
1050
Melting Onset (Solidus), °C 1020
1040
Specific Heat Capacity, J/kg-K 390
420
Thermal Conductivity, W/m-K 130
55
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
12
Electrical Conductivity: Equal Weight (Specific), % IACS 30
13

Otherwise Unclassified Properties

Base Metal Price, % relative 31
29
Density, g/cm3 8.9
8.5
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 42
49
Embodied Water, L/kg 310
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
180
Resilience: Unit (Modulus of Resilience), kJ/m3 20
240
Stiffness to Weight: Axial, points 7.2
7.5
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.2
18
Strength to Weight: Bending, points 10
18
Thermal Diffusivity, mm2/s 38
15
Thermal Shock Resistance, points 9.3
19

Alloy Composition

Aluminum (Al), % 0 to 0.010
6.0 to 7.5
Copper (Cu), % 97.7 to 99.15
88 to 91.8
Iron (Fe), % 0
2.0 to 3.0
Lead (Pb), % 0 to 0.020
0 to 0.010
Manganese (Mn), % 0.1 to 0.3
0 to 0.2
Nickel (Ni), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.050
0 to 0.015
Silicon (Si), % 0.15 to 0.4
0 to 0.1
Tin (Sn), % 0.6 to 0.9
0.2 to 0.5
Zinc (Zn), % 0 to 0.1
0 to 0.2
Residuals, % 0
0 to 0.2