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Silicon Bronze 651 Material Property Data Sheet

Do you need custom fasteners created with Silicon Bronze 651? Since our inception, Vegas Fastener Manufacturing has met every challenge of providing Quality, Timely, Cost-effective solutions for specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the technical specifications of the Silicon Bronze 651 Bar Stock we have available to meet your needs.


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. %
FeMax 0.8 
MnMax 0.7 
PbMax 0.05 
Si0.8 - 2 
ZnMax 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.

Test specimen: rod - 25mm diameter.

Physical PropertiesMetricEnglishComments
Density8.75 g/cc0.316 lb/in at 20C (68F)

Mechanical Properties
Hardness, Rockwell F5555 
Tensile Strength, Ultimate275 MPa39900 psi 
Tensile Strength, Yield105 MPa15200 psi 0.5% extension under load
Elongation at Break50 %50 % In 50 mm
Modulus of Elasticity115 GPa16700 ksi 
Machinability30 %30 % UNS C36000 (free-cutting brass) = 100%
Shear Modulus44 GPa6380 ksi 

Electrical Properties
Electrical Resistivity1.44e-005 ohm-cm1.44e-005 ohm-cm 

Thermal Properties
CTE, linear 250C18 m/m-C10 in/in-F from 20-300C (68-570F)
Heat Capacity0.38 J/g-C0.0908 BTU/lb-F 
Thermal Conductivity57 W/m-K396 BTU-in/hr-ft-F at 20C (68F)
Melting Point1030 - 1060 C1890 - 1940 F 
Solidus1030 C1890 F 
Liquidus1060 C1940 F 

Processing Properties
Annealing Temperature475 - 675 C887 - 1250 F 
Hot-Working Temperature700 - 875 C1290 - 1610 F 

References are available for this material.


This information is provided by MatWeb.com, The Online Materials Database and is reprinted with their permission.

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