Silicon Bronze 651 Material Property Data Sheet

Low-silicon bronze B, UNS C65100, OSO35 Temper rod

Subcategory: Bronze; Copper Alloy; Metal; Nonferrous Metal

Key Words: CDA 651, ISO CuSi1, CEN C115C

Component    Wt. % Cu 98.5   Fe Max 0.8   Mn Max 0.7   Pb Max 0.05   Si 0.8 - 2   Zn Max 1.5

Material Notes:
Good to excellent corrosion resistance. Excellent hot and cold workability. Fabricated by forming and bending, heading and upsetting, hot forging and pressing, roll threading and knurling, squeezing and swaging.

Applications: hydraulic pressure lines, anchor screws, bolts, cable clamps, cap screws, machine screws, marine hardware, nuts, pole-line hardware, rivets, U-bolts, electrical conduits, heat exchanger tubing, welding rod.

Physical Properties	Metric	English	Comments
Density	8.75 g/cc	0.316 lb/in³	at 20°C (68°F)
Mechanical Properties
Hardness, Rockwell F	55	55
Tensile Strength, Ultimate	275 MPa	39900 psi
Tensile Strength, Yield	105 MPa	15200 psi	0.5% extension under load
Elongation at Break	50 %	50 %	In 50 mm
Modulus of Elasticity	115 GPa	16700 ksi
Machinability	30 %	30 %	UNS C36000 (free-cutting brass) = 100%
Shear Modulus	44 GPa	6380 ksi
Electrical Properties
Electrical Resistivity	1.44e-005 ohm-cm	1.44e-005 ohm-cm
Thermal Properties
CTE, linear 250°C	18 µm/m-°C	10 µin/in-°F	from 20-300°C (68-570°F)
Heat Capacity	0.38 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	57 W/m-K	396 BTU-in/hr-ft²-°F	at 20°C (68°F)
Melting Point	1030 - 1060 °C	1890 - 1940 °F
Solidus	1030 °C	1890 °F
Liquidus	1060 °C	1940 °F
Processing Properties
Annealing Temperature	475 - 675 °C	887 - 1250 °F
Hot-Working Temperature	700 - 875 °C	1290 - 1610 °F

References are available for this material.