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DIN CuSi1 Silicon Bronze Casting
DIN CuSi1 Silicon Bronze Casting | DIN 1705 | C87300 Equivalent | Low Silicon Bronze
DIN CuSi1 Silicon Bronze casting (DIN 1705), the German DIN standard for low silicon bronze, is equivalent to UNS C87300 (USA) and IS 318 Gr.SiB1 (India). Electrical Accessories India manufactures DIN CuSi1 silicon bronze castings using sand casting, investment casting, centrifugal casting, green sand casting, and permanent mold casting. DIN CuSi1 has the lowest silicon content (1.5-3.0%) of the DIN silicon bronze family, providing the best weldability, finest investment casting surface detail, and excellent ductility.
DIN CuSi1 Chemical Composition and Properties
| Property | DIN CuSi1 Value | Standard |
|---|---|---|
| DIN Designation | CuSi1 | DIN 1705 |
| US Equivalent | C87300 (UNS C87300) | ASTM B198 |
| ISO Designation | CuSi1 | ISO |
| Indian Equivalent | IS 318 Gr.SiB1 | BIS |
| Silicon (Si) | 1.5-3.0% | DIN 1705 |
| Manganese (Mn) | 0.5-1.3% | DIN 1705 |
| Tensile Strength | 380 MPa min | DIN 1705 |
| 0.2% Yield Strength | 140 MPa min | DIN 1705 |
| Elongation | 20% min | DIN 1705 |
| Hardness | 80-110 HB | – |
| Density | 8.3 g/cm3 | – |
| Max Service Temperature | 200 deg C | – |
| Weldability | Excellent – best in DIN silicon bronze range | AWS A5.7 ERCuSi-A |
DIN CuSi1 Silicon Bronze Casting Processes
DIN CuSi1 Silicon Bronze Sand Casting
Sand casting of DIN CuSi1 for large and complex components. Furan resin-bonded moulds. Weights 0.05-200+ kg. Tolerances CT7-CT9. EN 10204 3.1 certificates confirming DIN 1705 CuSi1 composition. Lead times 1-2 weeks.
DIN CuSi1 Silicon Bronze Centrifugal Casting
Centrifugal casting of DIN CuSi1 producing dense hollow cylindrical components with excellent ductility. Tolerances CT5-CT6. Suitable for marine shaft bushings, pressure vessel nozzles, and cylindrical fittings specified to DIN CuSi1.
DIN CuSi1 Silicon Bronze Investment Casting
Investment casting (lost-wax) of DIN CuSi1 achieves CT4-CT5 tolerances and Ra 1.6-3.2 um surface finish. DIN CuSi1 produces the finest surface detail in investment casting of all DIN silicon bronzes, capturing textures as fine as 0.1 mm. Ideal for architectural hardware, art castings, heritage restoration, and precision marine components.
DIN CuSi1 Silicon Bronze Green Sand Casting
Green sand casting of DIN CuSi1 for economical, rapid production. Tolerances CT8-CT10. Most economical for volume DIN CuSi1 standard hardware.
DIN CuSi1 Silicon Bronze Permanent Mold Casting
Permanent mold casting of DIN CuSi1 using reusable dies for high-volume production. Tolerances CT5-CT7. DIN CuSi1’s high ductility (20%+ elongation) reduces hot cracking risk in permanent mold castings. EN 10204 3.1 certificates with DIN 1705 reference.
DIN CuSi1 Cross-Reference
| Standard | Designation | Country/Region |
|---|---|---|
| DIN 1705 | CuSi1 | Germany |
| UNS (ASTM) | C87300 | USA |
| ISO | CuSi1 | International |
| IS 318 | Gr.SiB1 | India |
Applications of DIN CuSi1 Silicon Bronze Castings
- Art and Sculpture: Finest surface detail investment casting for German art foundries, architectural ornament, heritage restoration
- Marine Hardware: Marine fasteners, deck hardware, through-hull fittings specified to DIN CuSi1
- Architectural Hardware: Door hardware, window fittings with natural golden patina to DIN specification
- Food Grade: Lead-free CuSi1 for food and beverage contact applications where zinc leaching is prohibited
- German Export Supply: DIN CuSi1 castings with EN 10204 3.1 and DIN 1705 reference documentation
Quality Standards
- DIN 1705 – Copper-Silicon Casting Alloys (CuSi1)
- ASTM B198 – Copper-Silicon Alloy Sand Castings (C87300 equivalent)
- IS 318 – Indian Standard for Copper Alloy Ingots and Castings (Gr.SiB1)
- 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 DIN CuSi1 Silicon Bronze Castings
Contact Electrical Accessories India for DIN CuSi1 / C87300 silicon bronze castings. Quotations within 24 hours. Provide drawing, grade (DIN CuSi1 / C87300 / IS 318 Gr.SiB1), quantity, casting process, delivery. EN 10204 3.1 mill certificates with DIN 1705 reference. Indicative pricing: USD 13.90 per kg CIF destination port.