Silicon Bronze Casting
Crafting Excellence in Silicon Bronze at our Casting Foundry in India.
FOB price: $11.90/kg  Click here to order
We are one of the leading manufacturers and exporters of Silicon Bronze castings from India. We have been supplying high-quality Silicon Bronze components , Silicon Bronze Parts, Silicon Bronze Castings, Machined Bronze castings, Bronze pipe fittings, Silicon Bronze Fittings to the world market for many decades. Our state-of-the-art foundry specializes in producing precision Silicon Bronze castings that meet the most stringent international standards and specifications. With our advanced metallurgical expertise and cutting-edge casting technologies, we have established ourselves as a preferred partner for industries requiring corrosion-resistant, high-strength, and aesthetically appealing Bronze components. Our commitment to quality, reliability, and customer satisfaction has earned us a reputation for excellence in the global market. We pride ourselves on our ability to understand complex customer requirements and deliver customized Silicon Bronze casting solutions that exceed expectations in performance, durability, and value.
What is Silicon Bronze Casting?
We are a leading Silicon Bronze Casting Foundry from India. Silicon Bronze is a specialized Copper-based alloy containing Silicon as the primary alloying element (typically 1-4%), along with other elements such as Manganese, Zinc, Tin, and Iron. This composition results in an exceptional combination of properties:
- Superior Corrosion Resistance: Especially in marine and industrial environments
- Excellent Mechanical Properties: High tensile strength and ductility
- Outstanding Casting Characteristics: Good fluidity and fill capability
- Attractive Appearance: Warm, golden-bronze color with excellent finishing potential
- Electrical Conductivity: Better than many other Bronze alloys
- Weldability: Excellent joining characteristics
- Machinability: Good post-casting machining properties
Available Silicon Bronze Grades and Specifications
United States (CDA/UNS)
- C87300: 2.5-4% silicon, often called “silicon red brass”
- C65500: 3% silicon, known as “high silicon bronze A”
- C65100: 0.8-2% silicon, known as “low silicon bronze A”
- C64700: Silicon bronze with nickel and chromium additions
- C64200: ~3% silicon with small amounts of manganese and iron
- C95600 (CDA 956): 1.5-3.5% silicon, used for marine applications and corrosion-resistant castings
- C96400: Silicon bronze with aluminum additions
- C65600: High-silicon bronze with tin
- C69400: Silicon brass (contains silicon and zinc)
United Kingdom (BS Standards)
- PB102: 1-5% silicon, similar to UNS C87300
- PB103: High-copper silicon bronze
- PB104: Silicon bronze with lead
- HTB1: Heat-treatable silicon bronze
Germany (DIN Standards)
- CuSi3Mn1 (DIN 2.1525): ~3% silicon and 1% manganese
- CuSi3Zn3Mn1 (DIN 2.1655): 3% silicon, 3% zinc, and 1% manganese
- CuSi1 (DIN 2.1090): Lower silicon content bronze
- G-CuSi5 (DIN 1707): 5% silicon cast bronze
Japan (JIS Standards)
- C6782: Silicon bronze similar to UNS C65500
- C6480: Low silicon bronze with high electrical conductivity
- C6450: Silicon bronze with additional alloying elements
- BC6: Silicon bronze casting alloy
China (GB Standards)
- QSi3-1: ~3% silicon and 1% manganese
- QSi1-3: Lower silicon content with additional alloying elements
- QSi3-2-3: Silicon bronze containing silicon, zinc, and manganese
- ZQSn10-1: Silicon bronze with tin additions
International (ISO)
- CuSi3Mn1 (ISO CW116C): 3% silicon, 1% manganese
- CuSi1 (ISO CW110C): 1% silicon bronze
Australia/New Zealand (AS/NZS)
- CZ131: Silicon bronze similar to UNS C65100
- C97600: Silicon bronze casting alloy
| Grade | Standard | Silicon % | Other Elements | Typical Applications |
|---|---|---|---|---|
| C87300 | ASTM B584, UNS | 2.5-4.0% | Cu remainder, Zn 1.5-4.5%, Fe 0.8-1.5%, Pb 0.2% max | Valves, pump components, marine hardware |
| C65500 | ASTM B96, UNS | 2.8-3.8% | Cu remainder, Mn 0.5-1.3%, Fe 0.8% max | Architectural elements, fasteners, springs |
| C65100 | ASTM B96, UNS | 0.8-2.0% | Cu remainder, Mn 0.7% max | Electrical components, springs, fasteners |
| C95600 (CDA 956) | ASTM B584, UNS | 1.5-3.5% | Cu remainder, Mn 0.25-1.5%, Zn 1.5% max | Marine propellers, pump impellers, valves |
| CuSi3Mn1 | DIN 2.1525, ISO CW116C | 2.7-3.5% | Cu remainder, Mn 0.8-1.3%, Fe 0.2-0.5% | Corrosion-resistant fittings, marine hardware |
| PB102 | BS | 1.0-5.0% | Cu remainder, various | General engineering applications |
| C6782 | JIS | 2.8-3.8% | Cu remainder, Mn, Fe | Industrial components |
| QSi3-1 | GB (China) | 2.8-3.5% | Cu remainder, Mn 0.5-1.5% | Engineering components |
| IS:5688 | IS (India) | 2.8-3.5% | Cu remainder, Mn 0.5-1.3% | Maritime fittings, decorative hardware |
Our Manufacturing Processes for Silicon Bronze Casting
Our comprehensive casting facility employs multiple precision manufacturing methods to produce Silicon Bronze components of exceptional quality:
Sand Casting
- Traditional green sand molds for complex geometries
- Production volumes: Medium to high
- Weight range: 0.5 kg to 500 kg
- Wall thickness: Minimum 4 mm
Resin Sand Casting
- Chemical bonded sand for superior surface finish
- Better dimensional accuracy than green sand
- Ideal for intricate components
- Wall thickness: Minimum 3 mm
Investment Casting (Lost Wax Process)
- Highest precision and surface quality
- Complex internal geometries possible
- Weight range: 0.05 kg to 20 kg
- Wall thickness: Minimum 2 mm
- Surface finish: Ra 3.2-6.3 μm
Permanent Mold Casting
- Metal molds for repetitive production
- Excellent surface finish and dimensional stability
- Production volumes: High
- Wall thickness: Minimum 3 mm
- Surface finish: Ra 1.6-3.2 μm
Machinery and Equipment
Our foundry is equipped with state-of-the-art machinery:
- Melting Furnaces: Induction furnaces (500 kg to 2 ton capacity)
- Molding Equipment: Automatic and semi-automatic molding lines
- Pattern Shop: CAD/CAM systems, 3D printing for pattern production
- Heat Treatment Facilities: Controlled atmosphere furnaces
- Testing Laboratory: Spectrographic analysis, mechanical testing equipment, NDT facilities
- Machining Centers: CNC machines for precision finishing operations
- Surface Treatment: Shot blasting, grinding, polishing equipment
Typical Silicon Bronze Cast Products
Our Silicon Bronze casting capabilities extend to a wide range of components:
- Marine Industry: Propellers, rudder hardware, seawater valves, pump casings,Bronze pipe clamps , Bronze Thru’ hulls , Bronze Strainers, Bronze pipe fittings, Bronze elbows, Bronze Hose barbs, Bronze Tee Fittings, Bronze bushings,
- Architectural: Decorative fixtures, door handles, railings, facade elements
- Industrial Equipment: Valve bodies, pump components, wear plates
- Oil & Gas: Non-sparking tools, fittings for corrosive environments
- Electrical: Switch gear components, bus bars, connectors, Aluminum Bronze and Silicon bronze Hotline clamps, Bronze Transformer Spade Terminals, Transformer Spade Connectors, Bronze Vise Connectors, Bronze Ground rod clamps,
Technical Specifications and Tolerances
| Feature | Sand Casting | Resin Sand | Investment Casting | Permanent Mold |
|---|---|---|---|---|
| Dimensional Tolerance (mm) | ±0.8 per 25mm | ±0.5 per 25mm | ±0.2 per 25mm | ±0.3 per 25mm |
| Surface Finish (Ra μm) | 6.3-12.5 | 3.2-6.3 | 1.6-3.2 | 1.6-3.2 |
| Min. Wall Thickness (mm) | 4 | 3 | 2 | 3 |
| Draft Angle | 2-3° | 1-2° | N/A | 1-3° |
| Weight Range | 0.5-500 kg | 0.5-100 kg | 0.05-20 kg | 0.1-50 kg |
Material Properties of Silicon Bronze
| Property | C87300 | C65500 | C95600 |
|---|---|---|---|
| Tensile Strength (MPa) | 310-380 | 380-450 | 340-410 |
| Yield Strength (MPa) | 150-200 | 170-240 | 160-210 |
| Elongation (%) | 15-25 | 15-30 | 18-30 |
| Hardness (Brinell) | 80-100 | 90-115 | 85-105 |
| Density (g/cm³) | 8.3-8.5 | 8.5-8.7 | 8.2-8.5 |
| Electrical Conductivity (%IACS) | 7-12 | 7-10 | 8-12 |
| Thermal Conductivity (W/m·K) | 30-45 | 35-50 | 30-45 |
| Melting Range (°C) | 870-1000 | 880-1025 | 865-990 |
| Corrosion Resistance | Excellent | Excellent | Excellent |
Finishes Available
We offer various finishing options for Silicon Bronze castings:
- Natural Finish: Cleaned and lightly polished
- Machined Finish: Precision machined surfaces
- Polished: High-luster polishing
- Patinated: Chemical treatments for antique appearances
- Lacquered: Clear protective coating
- Custom Finishes: Specialized treatments as per customer requirements
Manufacturing Process Flow
Raw Material Inspection → Pattern Making → Molding → Core Making →
Melting → Pouring → Cooling → Shakeout → Fettling → Heat Treatment →
Quality Inspection → Machining (if required) → Surface Treatment →
Final Inspection → Packaging → ShippingTurnaround Time and Production Capacity
- Sample Development: 2-3 weeks
- First Article Inspection: 3-4 weeks
- Production Lead Time: 4-6 weeks (standard orders)
- Rush Orders: Available with 2-3 week delivery (subject to capacity)
- Annual Production Capacity: 1,200 metric tons of Silicon Bronze castings
Industries We Serve
- Maritime and Naval: Corrosion-resistant components for marine environments
- Architecture and Construction: Decorative and functional building elements
- Industrial Equipment: Pumps, valves, and machinery components
- Oil & Gas: Safety-critical components for corrosive environments
- Electrical: Conductive components and connectors, Ground rod clamps, Transformer ground clamps, Bronze Hotline clamps, Bronze Transformer spades, Bronze Spade conenctors, Vise Connectors, Bronze TRansformer eyebolts.
- Sculpture and Art: Custom artistic castings
- Water Treatment: Impellers, valve bodies, and filtration components
- Defense: Specialized non-magnetic components
Quality Assurance and Testing
All our Silicon Bronze castings undergo rigorous quality control:
- Chemical Composition Analysis: Spectrographic testing
- Mechanical Testing: Tensile, yield, elongation testing
- Non-Destructive Testing: Radiographic, ultrasonic, dye penetrant testing
- Dimensional Inspection: CMM measurements
- Hydrostatic Testing: For pressure-containing components
- Certification: Material test certificates as per EN 10204 3.1/3.2
Why Choose Our Silicon Bronze Castings, Silicon Bronze Fittings, Silicon Bronze Parts and Silicon Bronze Components?
- Metallurgical Expertise: Three decades of experience in Silicon Bronze casting
- Global Exposure: Serving clients across North America, Europe, and Asia
- Customization Capabilities: Tailored solutions for specific requirements
- Production Flexibility: From prototypes to high-volume production
- Comprehensive In-house Facilities: Complete control over quality
- Competitive Pricing: Direct manufacturer advantage
- Consistent Quality: ISO 9001:2015 certified processes
- Technical Support: Experienced metallurgists and engineers
- Communication: Dedicated account managers with technical background
- On-time Delivery: Reliable logistics and tracking systems
Packaging and Shipping
- Standard Packaging: Wooden crates lined with moisture barrier
- Custom Packaging: Available with customer logos/labels
- Export Documentation: Complete compliance with international shipping regulations
- Shipping Methods: Sea, air, and expedited courier services
- Global Logistics: Door-to-door delivery options
- Containerization: FCL and LCL options available
Frequently Asked Questions
Q: What makes Silicon Bronze superior to other Bronze alloys for marine applications?
A: Silicon Bronze offers exceptional corrosion resistance in seawater environments due to its silicon content, which forms a protective oxide layer. It also maintains its mechanical properties better than many other Copper alloys in marine conditions.
Q: Can you match specific Silicon Bronze compositions required by our company standards?
A: Yes, we can customize Silicon Bronze alloy compositions within reasonable parameters to meet your specific requirements, backed by our in-house spectrographic analysis facilities.
Q: What is the maximum size of Silicon Bronze castings you can produce?
A: Our sand casting capabilities allow for Silicon Bronze components up to 1.2 meters in maximum dimension and weighing up to 500 kg as a single piece.
Q: How do you ensure consistent quality across production batches?
A: We maintain strict process controls including melt chemistry analysis before pouring, standardized heat treatment procedures, and comprehensive testing of samples from each production batch.
Q: Do you provide material certifications with shipments?
A: Yes, we provide comprehensive material test certificates compliant with international standards like EN 10204 3.1, including chemical composition and mechanical properties.
Q: What tolerances can be achieved on machined Silicon Bronze components?
A: For precision-machined Silicon Bronze components, we can achieve tolerances as tight as ±0.05mm on specific critical features.
Q: Can Silicon Bronze castings be welded after production?
A: Yes, Silicon Bronze has excellent weldability. We can provide specific welding procedure recommendations based on the exact alloy composition used.
Q: How does the ordering process work for new customers?
A: New customers typically start with technical discussions, followed by sample development, first article approval, and then production orders. Our team provides guidance throughout this process.
Q: What is the minimum order quantity for Silicon Bronze castings?
A: While our processes are optimized for medium to large production runs, we can accommodate smaller orders with minimum quantities starting at 50 kg for standard alloys.
Q: Do you offer design assistance for optimizing components for casting?
A: Yes, our engineering team provides comprehensive design-for-manufacturing support to optimize your components for the casting process, potentially reducing costs and improving performance.
Customer Testimonials
J. Harrington, Marine Equipment Manufacturer, Boston, USA
“We’ve been sourcing Silicon Bronze pump components from this Bronze casting foundry in India for over seven years. Their consistent quality and corrosion resistance in harsh seawater environments have been exceptional. Their technical team has helped us optimize our designs for better performance, and their on-time delivery has been remarkable even during global supply chain challenges.”
Glossary:
Sand Casting: A metal casting process characterized by using sand as the mold material.
Investment Casting: A precision casting process that employs a wax pattern coated with refractory material to create a mold.
Silicon Bronze: A Copper-based alloy containing Silicon as the primary alloying element.
Tensile Strength: The maximum stress that a material can withstand while being stretched before breaking.
Heat Treatment: Controlled heating and cooling processes to alter a metal’s properties.
Spectrographic Analysis: A method of chemical analysis to determine the elemental composition of a material.
Fluidity: The ability of molten metal to flow and fill intricate mold cavities.
Draft Angle: A taper applied to surfaces perpendicular to the parting line in casting molds to facilitate pattern removal.
Non-Destructive Testing (NDT): Methods used to evaluate properties without causing damage to the material.
Contact Us for Premium Silicon Bronze Castings
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Request a Quote/Brochure: Kindly send us an email for a quick reply. With three decades of casting expertise transform your Silicon Bronze casting and component needs into reality. Contact us today for a consultation with our metallurgical specialists.
