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Eagle Brass 521 Phosphor Bronzes 8% C, 1/4 Hard

Category Metal , Nonferrous Metal , Copper Alloy , Bronze
Manufacturer Eagle Brass Company
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Eagle Brass 521 Phosphor Bronzes 8% C, 1/4 Hard.pdf
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Material Notes:
Alloy C521 is a high tin alloy of the phosphor bronze family. The additional tin relative to the more commonly used C510 results in higher mechanical properties with a modest reduction in electrical conductivity.Applications include electronic parts, springs, contacts, switch parts and fasteners.Information provided by Eagle Brass Company
Physical Properties Metric English Comments
Density 8.80 g/cc
0.318 lb/in³
Annealed
Mechanical Properties Metric English Comments
Hardness, Rockwell 30T 59 - 71
59 - 71
Thickness > 0.020 Inch
Tensile Strength, Ultimate 434 - 517 MPa
63000 - 75000 psi
Tensile Strength, Yield 241 - 427 MPa
35000 - 62000 psi
0.2% offset
Elongation at Break 40 - 60 %
40 - 60 %
in 2 in.
Tensile Modulus 110 GPa
16000 ksi
Thermal Properties Metric English Comments
CTE, linear 18.2 µm/m-°C

@Temperature 20.0 - 300 °C
10.1 µin/in-°F

@Temperature 68.0 - 572 °F
Thermal Conductivity 62.3 W/m-K
432 BTU-in/hr-ft²-°F
Component Elements Properties Metric English Comments
Copper, Cu 91.9 %
91.9 %
Phosphorous, P 0.10 %
0.10 %
Tin, Sn 8.0 %
8.0 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000137 ohm-cm
0.0000137 ohm-cm
Annealed
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