Silicon Bronze 655

Do you need custom fasteners created with Silicon Bronze 655? Since our inception, Elgin Fastener Group 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 655 Bar Stock we have available to meet your needs.

Herculoy®, High-Silicon Bronze A, UNS C65500, H06 (50%) Temper rod

Subcategory: Bronze; Copper Alloy; Metal; Nonferrous Metal Key Words: HCDA 655, CS101, ISO CuSi3Mn1, CEN CS101, copper-silicon, silicon bronze

Component Wt. %
Cu 97
Fe Max 0.8
Mn Max 1.5
Ni Max 0.6
Pb Max 0.5
Si 2.8 – 3.8
Zn Max 1.5

Material Notes: Good to excellent corrosion resistance. Excellent hot and cold workability. Fabricated by blanking, drawing, forming and bending, heading and upsetting, hot forging and pressing, roll threading and knurling, shearing, 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, propeller shafts.

Test specimen: wire – 2mm diameter.

Physical Properties Metric English Comments
Density 8.53 g/cc 0.308 lb/in³ at 20°C (68°F)
Mechanical Properties
Hardness, Rockwell B 95 95
Tensile Strength, Ultimate 745 MPa 108000 psi
Tensile Strength, Yield 415 MPa 60200 psi 0.5% extension under load
Elongation at Break 13 % 13 % In 50 mm
Modulus of Elasticity 105 GPa 15200 ksi
Poisson’s Ratio 0.346 0.346
Machinability 30 % 30 % UNS C36000 (free-cutting brass) = 100%
Shear Modulus 39 GPa 5660 ksi
Shear Strength 425 MPa 61600 psi
Electrical Properties
Electrical Resistivity 2.46e-005 ohm-cm 2.46e-005 ohm-cm at 20°C (68°F)
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 36 W/m-K 250 BTU-in/hr-ft²-°F
Melting Point 970 – 1025 °C 1780 – 1880 °F
Solidus 970 °C 1780 °F
Liquidus 1025 °C 1880 °F
Processing Properties
Annealing Temperature 475 – 700 °C 887 – 1290 °F
Hot-Working Temperature 700 – 875 °C 1290 – 1610 °F
Recrystallization Temperature 4.44 °C 40 °F C37700 (forging brass) = 100%

References are available for this material.