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CW116C Silicon Bronze Casting
CW116C Silicon Bronze Casting | BS EN 12163 | C65500 | CuSi3Mn1 | High Silicon Bronze A
CW116C Silicon Bronze casting, designated under BS EN 12163 as the European standard high silicon bronze, is equivalent to UNS C65500 (USA), DIN CuSi3Mn (Germany), ISO CuSi3Mn1, IS 318 Gr.SiB3 (India), and JIS C6561 (Japan). Electrical Accessories India manufactures CW116C/C65500 silicon bronze castings using sand casting, investment casting, centrifugal casting, green sand casting, and permanent mold casting for cryogenic, chemical plant, marine, and precision engineering applications worldwide.
CW116C High Silicon Bronze A provides 490 MPa minimum tensile strength – the highest mechanical performance of any true silicon bronze – combined with full ductility at cryogenic temperatures (-200 deg C), excellent stress corrosion cracking resistance in ammonia and nitrogen-compound environments, and outstanding weldability with ERCuSi-A filler wire.
CW116C Chemical Composition and Mechanical Properties
| Property | CW116C Value | Standard |
|---|---|---|
| EN Number | CW116C | BS EN 12163 |
| US Equivalent | C65500 (UNS C65500) | ASTM/CDA |
| ISO Designation | CuSi3Mn1 | ISO |
| DIN Designation | CuSi3Mn | DIN 1705 |
| Indian Standard | IS 318 Gr.SiB3 | BIS |
| JIS Number | C6561 | JIS Japan |
| Silicon (Si) | 2.8-3.8% | BS EN 12163 |
| Manganese (Mn) | 0.5-1.3% | BS EN 12163 |
| Copper (Cu) | Remainder (min 94.8%) | BS EN 12163 |
| Tensile Strength | 490 MPa min | BS EN 12163 |
| 0.2% Yield Strength | 200 MPa min | BS EN 12163 |
| Elongation | 15% min | BS EN 12163 |
| Hardness | 100-150 HB | – |
| Density | 8.5 g/cm3 | – |
| Electrical Conductivity | 7-9% IACS | – |
| Max Service Temperature | 200 deg C (min -200 deg C cryogenic) | – |
| Weldability | Excellent (TIG/MIG ERCuSi-A) | AWS A5.7 |
CW116C Silicon Bronze Casting Processes
CW116C Silicon Bronze Sand Casting
CW116C Silicon Bronze Sand Casting produces large and complex components for cryogenic, chemical plant, and marine applications. Furan resin-bonded sand moulds. Tolerances CT7-CT9. Component weights to 200+ kg. EN 10204 3.1 certificates confirming Si and Mn to BS EN 12163 supplied. Lead times 1-2 weeks.
CW116C Silicon Bronze Centrifugal Casting
CW116C Silicon Bronze Centrifugal Casting produces cylindrical components with the highest mechanical properties in the silicon bronze family. Manganese-refined grain structure in centrifugal castings provides exceptional strength and ductility. Tolerances CT5-CT6. Ideal for cryogenic valve components, high-pressure bushing rings, and chemical plant cylindrical fittings.
CW116C Silicon Bronze Investment Casting
CW116C Silicon Bronze Investment Casting achieves CT4-CT5 tolerances and Ra 1.6-3.2 um surface finish. CW116C investment castings are supplied with EN 10204 3.1 mill certificates. Suitable for precision cryogenic valve fittings, complex-geometry chemical plant hardware, and precision marine components requiring maximum strength combined with investment casting accuracy.
CW116C Silicon Bronze Green Sand Casting
CW116C Silicon Bronze Green Sand Casting offers rapid, economical production for standard hardware shapes in CW116C specification. Clay-bonded green sand moulds. Tolerances CT8-CT10. Most economical for volume production where subsequent machining brings components to final dimensions.
CW116C Silicon Bronze Permanent Mold Casting
CW116C Silicon Bronze Permanent Mold Casting uses reusable steel dies for high-volume, consistent production. CW116C’s manganese addition provides fine grain structure under permanent mould cooling conditions, yielding excellent mechanical properties in production castings. Tolerances CT5-CT7. EN 10204 3.1 certificates supplied.
CW116C Cross-Reference to International Standards
| Standard | Designation | Country/Region |
|---|---|---|
| BS EN 12163 | CW116C | UK / Europe |
| UNS (ASTM/CDA) | C65500 | USA |
| ISO | CuSi3Mn1 | International |
| DIN 1705 | CuSi3Mn | Germany |
| IS 318 | Gr.SiB3 | India |
| JIS H5120 | C6561 | Japan |
Applications of CW116C Silicon Bronze Castings
- Cryogenic Engineering: Full ductility at -200 deg C. Valve bodies, fittings, structural components in LNG, liquid nitrogen, liquid oxygen service. CW116C is the silicon bronze of choice for cryogenic applications.
- Chemical Plant: Structural hardware for ammonia, acid, and H2S plant. Superior SCC resistance. Earthing clamps, cable gland bodies, conduit fittings for aggressive process areas.
- Marine and Offshore: High-strength structural marine hardware, deck fittings, offshore structural components where 490 MPa silicon bronze is required.
- European and UK Supply: CW116C designation preferred by European engineering firms and procurement teams working to EN standards.
Quality Standards for CW116C Silicon Bronze
- BS EN 12163 – Copper Alloy Rod and Bar (CW116C)
- ASTM B96 – Silicon Bronze Rod, Bar, and Shapes (C65500)
- IS 318 – Indian Standard Copper Alloy Ingots and Castings (Gr.SiB3)
- DIN 1705 – Copper-Silicon-Manganese Casting Alloys (CuSi3Mn)
- JIS H5120 – Copper and Copper Alloy Castings (C6561)
- 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 CW116C High Silicon Bronze A Castings
Electrical Accessories India supplies CW116C silicon bronze castings to BS EN 12163 and C65500 to ASTM B96 for cryogenic, chemical plant, marine, and precision engineering applications. Quotations within 24 hours. Provide drawing, grade (CW116C / C65500 / CuSi3Mn1), quantity, casting process, and delivery destination. EN 10204 3.1 certificates supplied. Export to UK, Europe, USA, Australia, UAE, Singapore. Indicative pricing: USD 13.90 per kg CIF destination.