SILICON BRONZE C65500 FASTENERS | ULTIMATE GUIDE & MANUFACTURER
Ananka Fasteners is a premier manufacturer and supplier of high-quality Silicon Bronze C65500 Fasteners (UNS C65500), also known as High-Silicon Bronze A. This premium non-ferrous copper alloy offers an exceptional blend of strength, corrosion resistance, and formability, achieving tensile strength comparable to medium-carbon steel, making it the ultimate fastening solution for marine, electrical, and architectural applications.
■ Complete Range of Silicon Bronze C65500 Fasteners
As a master manufacturer, we produce a comprehensive range of C65500 fasteners spanning from marine hardware to architectural restoration components.
| Bolts & Screws |
Nuts & Washers |
Studs & Rods |
| Hex Head Bolts / Cap Screws |
Hex Nuts / Heavy Hex Nuts |
Continuous Thread Studs |
| Carriage Bolts |
Jam Nuts / Acorn Nuts |
Double End Studs |
| Wood Screws / Machine Screws |
Flat Washers / Lock Washers |
Threaded Rods / Grounding Rods |
| Sheet Metal Screws / Set Screws |
Custom CNC Machined Nuts |
Custom CNC Machined Studs |
■ Silicon Bronze C65500 Material Specifications
| Material Equivalent Grades |
UNS C65500 | High-Silicon Bronze A | Copper-Silicon Alloy |
| Standard Specifications |
ASTM F468 (Nonferrous Bolts, Hex Cap Screws & Studs) ASTM F467 (Nonferrous Nuts) ASTM B98 / B98M (Copper-Silicon Alloy Rod, Bar & Shapes) |
| Size Range |
Metric: M3 to M100 | Imperial: 1/8" to 4" Custom machined lengths available on request. |
| Thread Types |
UNC, UNF, Metric Coarse, Metric Fine, BSW, BSF |
| Dimensional Standards |
ASME B18.2.1 (Hex Bolts & Hex Cap Screws), ASME B18.2.2 (Hex Nuts & Heavy Hex Nuts), ASME B18.21.1 (Washers) |
■ Chemical Composition of C65500
| Cu (Copper) |
Si (Silicon) |
Mn (Manganese) |
Zn (Zinc) |
Fe (Iron) |
Pb (Lead) |
| 94.8% Min (Remainder) |
2.80 - 3.80% |
0.50 - 1.30% |
1.50% Max |
0.80% Max |
0.05% Max |
■ Mechanical & Physical Properties
| Tensile Strength |
Yield Strength |
Elongation (in 2") |
Hardness (Rockwell) |
Density |
| 70,000 - 105,000 psi (480 - 725 MPa) |
35,000 - 55,000 psi (240 - 380 MPa) |
12% - 50% |
B75 - B95 |
0.308 lbs/cu in (8.53 g/cm³) |
| Melting Point |
1865 - 1922°F (1018 - 1050°C) |
| Modulus of Elasticity |
15,000 ksi (103 GPa) |
| Electrical Conductivity |
7% IACS (Annealed) |
| Thermal Conductivity |
21 Btu/(hr·ft·°F) at 68°F |
Note: Exact mechanical properties for fasteners depend on the diameter, heat treatment, and whether the material is cold-headed or machined.
■ Key Characteristics & Industrial Applications
Silicon Bronze C65500 delivers a rare combination of steel-like mechanical strength with copper-alloy corrosion resistance, making it a preferred alternative to stainless steel and brass in demanding marine and electrical environments.
- Superior Marine Corrosion Resistance: Highly resistant to saltwater, brine, and coastal atmospheric conditions without the pitting or crevice corrosion risk seen in stagnant-seawater stainless steel.
- Anti-Galling Properties: Excellent anti-galling and anti-seizing characteristics allow repeated tightening and loosening without cold welding.
- Non-Magnetic: Ideal for mine-sweeping applications, MRI machines, and sensitive electronic enclosures.
- Electrical & Thermal Conductivity: Strong conductivity for grounding grids and electrical termination hardware.
- Aesthetic Appeal: Weathers to a natural bronze patina, ideal for architectural restoration and decorative metalwork.
■ Primary Industries Served
- Marine & Naval: Boat building above and below the water line, dock construction, and desalinization plants.
- Power & Electrical: Grounding grids, transformer connections, electrical switchgears, and utility pole hardware.
- Waterworks & Plumbing: Water treatment facilities, valve and pump assemblies, and underground pipe connections.
- Architecture & Construction: Restoration of historic buildings, outdoor statues, custom bronze facades, and high-end roofing.
Quality Assurance: All Ananka Fasteners are fully traceable and supplied with EN 10204 Type 3.1 or 3.2 Material Test Certificates (MTC). This critical documentation traces the heat chemistry and physical property test results linearly from the original raw melt to the finished threaded product, ensuring total supply chain transparency.