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C65100 Silicon Bronze Casting
C65100 Silicon Bronze Casting | Everdur | Low Silicon Bronze B
C65100 Silicon Bronze casting (UNS C65100), commercially known as Everdur and classified as Low Silicon Bronze B, is a copper-silicon alloy with 0.8-2.0% silicon content. Electrical Accessories India manufactures C65100 Everdur silicon bronze castings using sand casting, investment casting, centrifugal casting, green sand casting, and permanent mold casting. C65100 is one of the original silicon bronze alloys, prized for its outstanding weldability, finest casting surface detail, and excellent corrosion resistance in marine and architectural applications.
C65100 Everdur has the lowest silicon content of the silicon bronze family, which translates to the highest weldability, the finest as-cast surface texture, and the best ductility (25%+ elongation) of all silicon bronzes. These properties make it the preferred alloy for fine art castings, heritage restoration, marine wooden boat fasteners, and thin-wall architectural hardware requiring TIG weld repair capability.
C65100 Everdur Chemical Composition and Mechanical Properties
| Property | C65100 / Everdur Value | Standard |
|---|---|---|
| UNS Number | C65100 | ASTM/CDA USA |
| Trade Name | Everdur (Low Silicon Bronze B) | – |
| Silicon (Si) | 0.8-2.0% | ASTM B96 |
| Manganese (Mn) | 0.05-0.50% | ASTM B96 |
| Copper (Cu) | Remainder (min 98%) | ASTM B96 |
| Tensile Strength | 350 MPa min | ASTM B96 |
| 0.2% Yield Strength | 120 MPa min | ASTM B96 |
| Elongation | 25% min | ASTM B96 |
| Hardness | 60-90 HB | – |
| Density | 8.7 g/cm3 | – |
| Electrical Conductivity | 11-14% IACS | – |
| Thermal Conductivity | 57 W/m.K | – |
| Max Service Temperature | 200 deg C | – |
| Machinability Rating | 25-35% | vs free-cutting brass = 100% |
| Weldability | Excellent – best in silicon bronze family | AWS A5.7 ERCuSi-A |
C65100 Everdur Silicon Bronze Casting Processes
C65100 Silicon Bronze Sand Casting
C65100 Everdur Silicon Bronze Sand Casting produces large and medium-weight components at lower cost than investment casting. C65100 has excellent castability with good fluidity and low gas absorption. Furan resin-bonded sand moulds. Component weights 0.05-200+ kg. Tolerances CT7-CT9. Surface finish Ra 6.3-12.5 um. Lead times 1-2 weeks. C65100 sand castings can be weld-repaired more readily than any other silicon bronze due to the alloy’s exceptional weldability.
Applications: Marine deck hardware, architectural elements, earthing clamps, pump bodies, valve bodies, art casting base components.
C65100 Silicon Bronze Centrifugal Casting
C65100 Everdur Silicon Bronze Centrifugal Casting produces hollow cylindrical components with excellent soundness. C65100’s high copper content and low silicon provide the best ductility of any silicon bronze in centrifugal casting, making it ideal for safety-critical cylindrical components like propeller shaft bushings, seawater pump bearings, and pressure vessel nozzle rings. Tolerances CT5-CT6.
Applications: Propeller shaft bushings, seawater pump bearings, cylindrical marine fittings, pressure vessel nozzles.
C65100 Silicon Bronze Investment Casting
C65100 Everdur Silicon Bronze Investment Casting is the premier process for fine art bronze casting. C65100’s low silicon content (0.8-2.0%) produces the finest microstructure of all silicon bronzes, capturing textures as fine as 0.05 mm in lost-wax casting – essential for sculptural detail, heraldic devices, and bas-relief architectural ornaments. Tolerances CT4-CT5, Ra 1.6-3.2 um surface finish. Investment-cast C65100 components can be TIG weld-assembled with ERCuSi-A filler producing joints of near-parent-metal strength – critical for multi-piece art castings.
Applications: Fine art sculpture, monumental bronzes, memorial plaques, heraldic castings, architectural ornaments, heritage restoration casting.
C65100 Silicon Bronze Green Sand Casting
C65100 Everdur Silicon Bronze Green Sand Casting offers rapid, low-cost production for medium-weight standard hardware. Clay-bonded green sand moulds. Tolerances CT8-CT10. Most economical for volume production of standard marine hardware shapes and earthing component blanks in C65100.
Applications: Volume marine hardware, standard clamp bodies, hardware blanks for CNC machining.
C65100 Silicon Bronze Permanent Mold Casting
C65100 Everdur Silicon Bronze Permanent Mold Casting uses reusable steel dies at 200-250 deg C for production volumes of 500-50,000 pieces. C65100’s high ductility (25%+ elongation) means permanent mold castings are less prone to hot cracking during solidification than higher-silicon alloys. Tolerances CT5-CT7. Suitable for fastener blanks, standard marine hardware, and electrical hardware in production quantities.
Applications: Marine fastener blanks, standard fittings, electrical connector bodies, cable gland bodies in production volumes.
Applications of C65100 Everdur Silicon Bronze Castings
- Fine Art and Sculpture: C65100 is the finest detail investment casting silicon bronze, used for museum-quality sculpture, memorial bronzes, architectural ornaments, and heritage restoration. TIG weld assembly of multi-piece castings is routine.
- Marine Boatbuilding Fasteners: C65100 Everdur silicon bronze screws and bolts are the traditional marine fastener for timber and GRP boats. 50+ year corrosion-free service life in marine environments.
- Architectural Hardware: Door handles, window furniture, handrail hardware, decorative elements. C65100 produces the finest natural golden patina of any silicon bronze.
- Heritage Restoration: C65100 composition closely matches many historical cast bronze alloys used in 19th and early 20th century architectural bronzes, making it ideal for restoration casting to match existing hardware.
- Electrical Earthing Hardware: Earthing clamps and connectors for chemical plant in ammonia, acid, and H2S atmospheres. C65100 stress corrosion cracking resistance in ammonia is excellent.
Quality Standards for C65100 Everdur Silicon Bronze
- ASTM B96 – Silicon Bronze Rod, Bar, and Shapes
- ASTM B98 – Copper-Silicon Alloy Wire
- AWS A5.7 ERCuSi-A – Silicon Bronze Welding Wire (filler for C65100)
- ISO 9001:2015 Quality Management System
- EN 10204 3.1 Mill Certificates (spectrometric analysis)
- RoHS 3 and REACH compliant
Request a Quote for C65100 Everdur Silicon Bronze Castings
Electrical Accessories India supplies C65100 Everdur silicon bronze castings for art foundries, marine hardware manufacturers, and architectural hardware producers worldwide. Quotations within 24 hours. Provide your drawing, required grade (C65100/Everdur), quantity, casting process, and patina requirements for art castings. Export to USA, UK, Germany, Australia, UAE, and Singapore with full EN 10204 3.1 mill certificates. Indicative pricing: USD 13.90 per kg CIF US Port.