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JIS C6561 Silicon Bronze Casting
JIS C6561 Silicon Bronze Casting | Japanese Silicon Bronze | CuSi3Mn1 | C65500 Equivalent
JIS C6561 Silicon Bronze casting (JIS H5120), the Japanese Industrial Standard designation for High Silicon Bronze A, is equivalent to UNS C65500 (USA), BS EN 12163 CW116C (Europe), DIN CuSi3Mn (Germany), and ISO CuSi3Mn1. Electrical Accessories India manufactures JIS C6561 silicon bronze castings using sand casting, investment casting, centrifugal casting, green sand casting, and permanent mold casting for Japanese, Asian, and international customers requiring JIS-specification silicon bronze.
JIS C6561 silicon bronze contains 2.8-3.8% silicon and 0.5-1.3% manganese, delivering 490 MPa minimum tensile strength, cryogenic capability to -200 deg C, excellent stress corrosion cracking resistance, and outstanding weldability with ERCuSi-A filler wire. Widely used in Japanese marine, offshore, and precision engineering industries.
JIS C6561 Chemical Composition and Mechanical Properties
| Property | JIS C6561 Value | Standard |
|---|---|---|
| JIS Number | C6561 | JIS H5120 Japan |
| US Equivalent | C65500 (UNS C65500) | ASTM B96 |
| EN Equivalent | CW116C | BS EN 12163 |
| ISO Designation | CuSi3Mn1 | ISO |
| DIN Designation | CuSi3Mn | DIN 1705 |
| Silicon (Si) | 2.8-3.8% | JIS H5120 |
| Manganese (Mn) | 0.5-1.3% | JIS H5120 |
| Tensile Strength | 490 MPa min | JIS H5120 |
| 0.2% Yield Strength | 200 MPa min | JIS H5120 |
| Elongation | 15% min | JIS H5120 |
| Hardness | 100-150 HB | – |
| Density | 8.5 g/cm3 | – |
| Max Service Temperature | 200 deg C (cryogenic to -200 deg C) | – |
| Weldability | Excellent (TIG/MIG ERCuSi-A) | AWS A5.7 |
JIS C6561 Silicon Bronze Casting Processes
JIS C6561 Silicon Bronze Sand Casting
JIS C6561 Silicon Bronze Sand Casting produces large and complex components using furan resin-bonded sand moulds. Components weigh 0.05-200+ kg. Tolerances CT7-CT9. EN 10204 3.1 certificates confirming chemical analysis to JIS H5120 C6561 / ASTM B96 C65500 limits. Lead times 1-2 weeks from existing patterns.
JIS C6561 Silicon Bronze Centrifugal Casting
JIS C6561 Silicon Bronze Centrifugal Casting produces dense cylindrical components with manganese-refined grain structure. Tolerances CT5-CT6. Suitable for Japanese marine and offshore applications requiring cylindrical silicon bronze components to JIS specification.
JIS C6561 Silicon Bronze Investment Casting
JIS C6561 Silicon Bronze Investment Casting achieves CT4-CT5 tolerances and Ra 1.6-3.2 um as-cast surface finish. Ideal for precision marine hardware, cryogenic fittings, and architectural components specified to JIS C6561. EN 10204 3.1 certificates supplied.
JIS C6561 Silicon Bronze Green Sand Casting
JIS C6561 Silicon Bronze Green Sand Casting uses clay-bonded green sand for rapid, economical production. Tolerances CT8-CT10. Most economical for high-volume standard JIS C6561 hardware.
JIS C6561 Silicon Bronze Permanent Mold Casting
JIS C6561 Silicon Bronze Permanent Mold Casting uses reusable steel dies for high-volume production. Tolerances CT5-CT7. Dimensional consistency across production runs. EN 10204 3.1 certificates confirming JIS C6561 composition.
JIS C6561 Cross-Reference
| Standard | Designation | Country/Region |
|---|---|---|
| JIS H5120 | C6561 | Japan |
| UNS (ASTM) | C65500 | USA |
| BS EN 12163 | CW116C | UK / Europe |
| ISO | CuSi3Mn1 | International |
| DIN 1705 | CuSi3Mn | Germany |
| IS 318 | Gr.SiB3 | India |
Applications of JIS C6561 Silicon Bronze Castings
- Japanese Marine Industry: Deck hardware, propeller shaft components, marine fasteners to JIS specifications
- Cryogenic Engineering: LNG industry fittings and components; JIS C6561 maintains ductility at -200 deg C
- Chemical Plant: Hardware for ammonia, acid, and corrosive process environments in Japanese industrial plants
- Precision Engineering: Bearing bushings, valve seats, pump components for Japanese OEM customers
- Export to Japan and Asia: Supplied to Japanese trading companies, shipyards, and engineering firms with JIS-referenced documentation
Quality Standards
- JIS H5120 – Copper and Copper Alloy Castings (C6561)
- ASTM B96 – Silicon Bronze Rod, Bar, and Shapes (C65500 equivalent)
- BS EN 12163 – Copper Alloy Rod and Bar (CW116C equivalent)
- AWS A5.7 ERCuSi-A – Silicon Bronze Welding Wire
- ISO 9001:2015 Quality Management System
- EN 10204 3.1 Mill Certificates
- RoHS 3 and REACH compliant
Request a Quote for JIS C6561 Silicon Bronze Castings
Electrical Accessories India supplies JIS C6561 / C65500 silicon bronze castings to Japanese, Asian, and international customers. Quotations within 24 hours. Provide drawing, grade (JIS C6561 / C65500 / CW116C / CuSi3Mn1), quantity, casting process, delivery destination. EN 10204 3.1 mill certificates supplied. Indicative pricing: USD 13.90 per kg CIF destination port.