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Silicon Bronze 655 Material Property Data Sheet

Do you need custom fasteners created with Silicon Bronze 655? 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 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. %
FeMax 0.8 
MnMax 1.5 
NiMax 0.6 
PbMax 0.5 
Si2.8 - 3.8 
ZnMax 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 PropertiesMetricEnglishComments
Density8.53 g/cc0.308 lb/in at 20C (68F)

Mechanical Properties
Hardness, Rockwell B9595 
Tensile Strength, Ultimate745 MPa108000 psi 
Tensile Strength, Yield415 MPa60200 psi 0.5% extension under load
Elongation at Break13 %13 % In 50 mm
Modulus of Elasticity105 GPa15200 ksi 
Poisson's Ratio0.3460.346 
Machinability30 %30 % UNS C36000 (free-cutting brass) = 100%
Shear Modulus39 GPa5660 ksi 
Shear Strength425 MPa61600 psi 

Electrical Properties
Electrical Resistivity2.46e-005 ohm-cm2.46e-005 ohm-cm at 20C (68F)

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 Conductivity36 W/m-K250 BTU-in/hr-ft-F 
Melting Point970 - 1025 C1780 - 1880 F 
Solidus970 C1780 F 
Liquidus1025 C1880 F 

Processing Properties
Annealing Temperature475 - 700 C887 - 1290 F 
Hot-Working Temperature700 - 875 C1290 - 1610 F 
Recrystallization Temperature4.44 C40 F C37700 (forging brass) = 100%

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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