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C90200 Bronze vs. ASTM B780 Alloy

C90200 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 (14, in this case) are not shown.

For each property being compared, the top bar is C90200 bronze and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
83
Elongation at Break, % 30
1.1 to 9.1
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 41
30
Tensile Strength: Ultimate (UTS), MPa 260
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 200
140
Specific Heat Capacity, J/kg-K 370
270
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 13
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 8.8
10

Common Calculations

Stiffness to Weight: Axial, points 7.0
4.5
Stiffness to Weight: Bending, points 18
14
Strength to Weight: Axial, points 8.3
9.1 to 16
Strength to Weight: Bending, points 10
11 to 15
Thermal Shock Resistance, points 9.5
16 to 29

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 91 to 94
23.5 to 25.7
Iron (Fe), % 0 to 0.2
0 to 0.050
Lead (Pb), % 0 to 0.3
0 to 0.030
Nickel (Ni), % 0 to 0.5
0.35 to 0.65
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.0050
0
Silver (Ag), % 0
74 to 76
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 6.0 to 8.0
0
Zinc (Zn), % 0 to 0.5
0 to 0.060
Residuals, % 0 to 0.6
0