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C94300 Bronze vs. ASTM B780 Alloy

C94300 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 16 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is C94300 bronze and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
83
Elongation at Break, % 9.7
1.1 to 9.1
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 32
30
Tensile Strength: Ultimate (UTS), MPa 180
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 150
140
Specific Heat Capacity, J/kg-K 320
270
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 9.3
10

Common Calculations

Stiffness to Weight: Axial, points 5.2
4.5
Stiffness to Weight: Bending, points 16
14
Strength to Weight: Axial, points 5.2
9.1 to 16
Strength to Weight: Bending, points 7.4
11 to 15
Thermal Shock Resistance, points 7.1
16 to 29

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.8
0
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 67 to 72
23.5 to 25.7
Iron (Fe), % 0 to 0.15
0 to 0.050
Lead (Pb), % 23 to 27
0 to 0.030
Nickel (Ni), % 0 to 1.0
0.35 to 0.65
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0
Silver (Ag), % 0
74 to 76
Sulfur (S), % 0 to 0.080
0
Tin (Sn), % 4.5 to 6.0
0
Zinc (Zn), % 0 to 0.8
0 to 0.060
Residuals, % 0 to 1.0
0