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C66100 Bronze vs. ASTM B780 Alloy

C66100 bronze belongs to the copper alloys classification, while ASTM B780 alloy belongs to the otherwise unclassified metals. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is C66100 bronze and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
83
Elongation at Break, % 8.0 to 40
1.1 to 9.1
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 43
30
Shear Strength, MPa 280 to 460
200 to 340
Tensile Strength: Ultimate (UTS), MPa 410 to 790
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 260
140
Specific Heat Capacity, J/kg-K 400
270
Thermal Expansion, µm/m-K 17
18

Otherwise Unclassified Properties

Density, g/cm3 8.7
10

Common Calculations

Stiffness to Weight: Axial, points 7.4
4.5
Stiffness to Weight: Bending, points 19
14
Strength to Weight: Axial, points 13 to 25
9.1 to 16
Strength to Weight: Bending, points 14 to 22
11 to 15
Thermal Shock Resistance, points 15 to 29
16 to 29

Alloy Composition

Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 92 to 97
23.5 to 25.7
Iron (Fe), % 0 to 0.25
0 to 0.050
Lead (Pb), % 0.2 to 0.8
0 to 0.030
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 0
0.35 to 0.65
Silicon (Si), % 2.8 to 3.5
0
Silver (Ag), % 0
74 to 76
Zinc (Zn), % 0 to 1.5
0 to 0.060
Residuals, % 0 to 0.5
0