Silicon Bronze Cold Forged Parts, Cold Formed Components & Fasteners

Price: US$ 12/30/Kilogram

We are one of the leading manufacturers and exporters of Silicon Bronze and Phosphor Bronze cold forged parts, cold formed components, and fasteners from India. We have been supplying high-quality Bronze alloy components to the world market for many decades. Our extensive experience spans over three decades in precision manufacturing of Silicon Bronze, Phosphor Bronze, Aluminum Bronze, and specialty Bronze alloy cold forged parts, utilizing advanced cold forming processes to deliver superior quality fasteners and components. Our state-of-the-art manufacturing facility in India is equipped with modern cold forging machinery and quality control systems to ensure consistent production of Bronze nuts, screws, bolts, and specialized components across multiple alloy systems. We serve diverse industries including marine, automotive, aerospace, electronics, and construction sectors worldwide with our comprehensive range of Bronze cold forged solutions. Our commitment to excellence, combined with competitive pricing and reliable delivery schedules, has established us as a trusted partner for Bronze cold forged solutions including Silicon Bronze C65100, Phosphor Bronze C51000, Aluminum Bronze C63000, and other specialty alloys. The unique properties of various Bronze alloys, including excellent corrosion resistance, high strength, superior machinability, and electrical conductivity, make our cold forged parts ideal for demanding applications in harsh environments. Our technical expertise and global exposure enable us to customize products according to specific customer requirements and international standards including ASTM, BS, DIN, JIS, and IS specifications.

Overview of Bronze Alloys for Cold Forged Parts

Silicon Bronze and Phosphor Bronze are high-performance Copper-based alloys that represent the pinnacle of cold forging materials for precision fasteners and components. Silicon Bronze contains approximately 95-98% Copper with Silicon as the primary alloying element (1.5-3.5%), along with small amounts of Manganese, Iron, and Zinc, while Phosphor Bronze incorporates Tin (1-9%) and Phosphorus (0.03-0.35%) to achieve enhanced spring properties and wear resistance. The cold forging process involves shaping these Bronze alloys at room temperature through controlled plastic deformation, resulting in enhanced mechanical properties, improved grain structure, and superior dimensional accuracy compared to traditional hot forging methods.

Our Bronze cold forged parts exhibit remarkable performance characteristics including exceptional resistance to seawater corrosion, stress corrosion cracking, dezincification, and fatigue failure. Phosphor Bronze cold forged fasteners are particularly valued for their superior spring properties, electrical conductivity, and wear resistance, making them ideal for electronic connectors, precision springs, and bearing applications. The cold forming process induces beneficial work hardening effects, significantly improving the tensile strength and fatigue resistance of both Silicon Bronze and Phosphor Bronze components while maintaining their inherent ductility, thermal conductivity, and corrosion resistance properties.

Material Grades and International Standards

Silicon Bronze Alloys for Cold Forging

Phosphor Bronze Alloys for Cold Forged Fasteners

Additional Bronze Alloys for Cold Forging Applications

Silicon Bronze Cold Forming Process

The Silicon Bronze cold forming process is a sophisticated manufacturing technique that transforms Silicon Bronze billets into precision components through controlled plastic deformation at ambient temperature. This process begins with careful selection of high-grade Silicon Bronze material conforming to international standards, followed by billet preparation where the material is cut to precise dimensions and cleaned to remove any surface contaminants. The cold forging operation utilizes hydraulic presses with forces ranging from 100 to 2000 tons, equipped with precision dies and tooling designed specifically for Silicon Bronze characteristics.

During the cold forming process, the Silicon Bronze material undergoes significant plastic deformation, resulting in grain refinement and work hardening that enhances the mechanical properties of the final component. The process parameters including forming speed, pressure, and die temperature are carefully controlled to prevent cracking and ensure uniform material flow. Post-forging operations may include stress relieving heat treatment at 250-350°C to optimize the microstructure and dimensional stability of the cold forged parts.

Manufacturing Machinery and Equipment

Phosphor Bronze Cold Forged Fasteners

Phosphor Bronze cold forged fasteners represent a specialized category of high-performance connecting elements manufactured from Phosphor Bronze alloys through precision cold forming processes. These fasteners combine the excellent electrical conductivity and corrosion resistance of Copper with the enhanced spring properties and wear resistance provided by Tin and Phosphorus additions. The cold forging process optimizes the grain structure and mechanical properties of Phosphor Bronze, resulting in fasteners with superior fatigue resistance, dimensional stability, and consistent performance characteristics essential for electronic, automotive, and precision engineering applications.

Our Phosphor Bronze fastener manufacturing capabilities include grades such as C50500 (PB1), C51000 (PB2), and C52100 (PB4), each optimized for specific application requirements. The cold forming process enables production of complex fastener geometries including micro-miniature screws for electronic assemblies, precision springs washers, and specialized connectors that maintain their elastic properties under repeated loading cycles. These fasteners are particularly valued in applications requiring high electrical conductivity, such as electrical panels, telecommunications equipment, and automotive electrical systems, where the combination of mechanical reliability and electrical performance is critical for long-term operation.

Aluminum Bronze and Specialty Alloy Cold Forged Components

Aluminum Bronze cold forged components offer exceptional strength and corrosion resistance for the most demanding marine and industrial applications. These high-strength Bronze alloys, including grades such as C61400, C63000, and C63200 (Nickel Aluminum Bronze), are cold forged to produce fasteners and components with tensile strengths exceeding 700 MPa while maintaining excellent resistance to seawater, sulfide environments, and high-temperature conditions. The cold forging process enhances the already superior mechanical properties of Aluminum Bronze, creating components suitable for offshore platforms, ship propulsion systems, and chemical processing equipment.

Our specialty Bronze alloy capabilities extend to Manganese Bronze, Naval Brass, and Beryllium Bronze cold forged parts, each engineered for specific performance requirements. Manganese Bronze components provide excellent machinability and strength for marine propeller hardware, while Naval Brass offers superior dezincification resistance for seawater applications. Beryllium Bronze cold forged parts deliver exceptional strength and electrical conductivity for aerospace and electronic applications where weight reduction and performance optimization are critical design factors.

Silicon Bronze Cold Formed Components

Silicon Bronze cold formed components represent a specialized category of precision-engineered parts manufactured through advanced cold forming techniques that leverage the unique properties of Silicon Bronze alloys. These components are produced using progressive die forming, deep drawing, and cold extrusion processes that shape the material through controlled plastic deformation without the application of heat. The cold forming process results in components with improved mechanical properties, including increased tensile strength, enhanced fatigue resistance, and superior dimensional stability compared to hot-formed or machined alternatives.

Our Silicon Bronze cold formed components find extensive applications in electrical connectors, marine hardware, architectural fittings, and precision instruments where the combination of electrical conductivity, corrosion resistance, and mechanical strength is crucial. The cold forming process enables the production of complex shapes with uniform wall thickness, tight tolerances, and excellent surface finish, reducing the need for secondary machining operations and lowering overall production costs. These components maintain the inherent benefits of Silicon Bronze including antimicrobial properties, thermal conductivity, and aesthetic appeal while providing enhanced structural integrity through the work hardening effect of cold forming.

Silicon Bronze Fasteners

Silicon Bronze fasteners are high-performance connecting elements manufactured from Silicon Bronze alloys through precision cold forming processes, offering superior corrosion resistance, mechanical strength, and reliability in demanding service environments. These fasteners are particularly valued in marine applications, chemical processing equipment, and architectural installations where exposure to moisture, saltwater, and corrosive chemicals requires exceptional durability and long-term performance. The combination of Silicon Bronze’s inherent corrosion resistance with the enhanced mechanical properties achieved through cold forming creates fasteners that significantly outperform conventional steel or Stainless Steel alternatives in specific applications.

Our Silicon Bronze fasteners are manufactured to meet stringent international standards including ASTM F467, BS 4395, and DIN 934, ensuring compatibility with global construction and manufacturing practices. The cold forming process used in their production results in unidirectional grain flow that enhances tensile strength and fatigue resistance while maintaining the excellent machinability and forming characteristics of Silicon Bronze. These fasteners exhibit exceptional resistance to stress corrosion cracking, crevice corrosion, and galvanic corrosion, making them ideal for joining dissimilar metals in marine and industrial applications.

Silicon Bronze Cold Forged Nuts

Silicon Bronze cold forged nuts are precision-manufactured threaded fasteners that combine the superior corrosion resistance of Silicon Bronze with the enhanced mechanical properties achieved through cold forging processes. These nuts are produced using specialized multi-station cold forming equipment that shapes the hexagonal exterior while maintaining precise internal thread geometry through controlled material flow. The cold forging process results in continuous grain flow around the thread profile, significantly improving the fatigue resistance and load-bearing capacity compared to machined alternatives.

Our Silicon Bronze cold forged nuts are available in various configurations including hex nuts, wing nuts, cap nuts, and specialized designs for specific applications. The manufacturing process ensures consistent thread quality with 6H tolerance class, providing reliable engagement with mating fasteners while maintaining the dimensional stability required for critical applications. These nuts exhibit excellent performance in marine environments, chemical processing equipment, and electrical assemblies where the combination of conductivity, corrosion resistance, and mechanical strength is essential for long-term reliability.

Silicon Bronze Cold Formed Screws

Silicon Bronze cold formed screws are precision-engineered fasteners manufactured through advanced cold forming techniques that produce superior thread quality, enhanced mechanical properties, and exceptional dimensional accuracy. The cold forming process shapes both the head configuration and thread profile through controlled plastic deformation, resulting in continuous grain flow that significantly improves the fatigue resistance and tensile strength of the finished screws. This manufacturing method eliminates the material waste associated with traditional machining while providing tighter tolerances and superior surface finish.

Our Silicon Bronze cold formed screws are available in various head styles including pan head, flat head, hex socket, and specialized designs for specific applications. The cold forming process ensures consistent thread pitch and profile accuracy, meeting international standards such as ISO 4762, DIN 912, and ASME B18.3. These screws are particularly valued in marine hardware, electrical connections, and precision instruments where the combination of corrosion resistance, electrical conductivity, and mechanical reliability is crucial for optimal performance in demanding service environments.

Silicon Bronze Hex Bolts

Silicon Bronze hex bolts are high-strength fasteners manufactured through precision cold forging processes that deliver exceptional performance characteristics for demanding structural and mechanical applications. These bolts feature the characteristic six-sided head design that provides optimal grip for standard wrenches and socket tools, while the cold forging process ensures uniform material properties throughout the entire bolt length. The manufacturing process begins with high-quality Silicon Bronze billets that are cold formed to create the hexagonal head geometry and cylindrical shank in a single operation, followed by precision thread rolling to achieve the required thread specifications.

Our Silicon Bronze hex bolts are engineered to meet stringent international standards including ASTM F467, ISO 4017, and DIN 933, ensuring compatibility with global construction and assembly practices. The cold forging process results in enhanced mechanical properties including increased tensile strength (typically 450-600 MPa), improved fatigue resistance, and superior dimensional consistency compared to hot-forged or machined alternatives. These bolts are particularly suited for marine applications, chemical processing equipment, and architectural installations where exposure to corrosive environments demands exceptional durability and long-term performance reliability.

Material Properties and Performance Metrics – Bronze Alloys

Silicon Bronze Cold Forged Properties

Phosphor Bronze Cold Forged Properties

Aluminum Bronze and Specialty Alloy Properties

Industries and Applications

Silicon Bronze and Phosphor Bronze cold forged parts serve diverse industries where the combination of mechanical strength, corrosion resistance, electrical conductivity, and specialized properties is essential for optimal performance. The marine industry represents one of the largest applications, where Bronze fasteners and components are used in shipbuilding, offshore platforms, yacht hardware, and coastal infrastructure due to their exceptional resistance to seawater corrosion and marine organisms. Phosphor Bronze fasteners are particularly valued in marine electrical systems, navigation equipment, and electronic instrumentation where electrical conductivity and corrosion resistance are critical.

In the automotive sector, Bronze alloys are utilized in exhaust systems, brake components, electrical connections, and precision springs where high-temperature performance, vibration resistance, and corrosion resistance are critical. The electronics and telecommunications industry extensively uses Phosphor Bronze cold forged connectors, springs, and contacts due to their superior electrical conductivity, spring properties, and resistance to stress relaxation. Aerospace applications include electrical connectors, sensor housings, spring elements, and specialized hardware where weight reduction, reliability, and performance in extreme conditions are essential.

The construction and architectural sectors rely on Bronze components for curtain walls, roofing systems, decorative hardware, and structural fasteners that require long-term durability and aesthetic appeal. Chemical processing facilities use Bronze components in pumps, valves, heat exchangers, and piping systems where resistance to various chemicals and high-temperature conditions is essential. Precision engineering applications include watch components, scientific instruments, measuring devices, and optical equipment where dimensional stability and corrosion resistance are paramount. Energy sector applications encompass wind turbine hardware, solar panel mounting systems, and electrical infrastructure components where long-term reliability and environmental resistance are crucial.

Quality Standards and Tolerances

Turnaround Time and Production Capacity

Our standard turnaround time for Silicon Bronze cold forged parts is 4-6 weeks from order confirmation to shipment, depending on the complexity of the components and order quantity. This timeframe includes material procurement, production planning, cold forging operations, quality inspection, and packaging. For urgent requirements, we offer expedited production services with reduced lead times of 2-3 weeks for standard components, subject to material availability and production capacity. Our flexible manufacturing approach allows us to accommodate both small batch production for prototypes and large-scale production runs for industrial applications.

Our production capacity includes the ability to manufacture Silicon Bronze cold forged parts ranging from 3mm to 100mm in diameter, with annual production capability exceeding 10,000 tons. We maintain strategic inventory of common Silicon Bronze grades to support rapid delivery of standard fasteners and components. Our production planning system enables real-time tracking of order status and provides customers with regular updates on production progress and delivery schedules.

Surface Finishes and Treatments

Silicon Bronze cold forged parts can be supplied with various surface finishes to meet specific application requirements and aesthetic preferences. The natural finish preserves the inherent golden-bronze appearance of Silicon Bronze while providing adequate corrosion protection for most applications. Passivation treatment enhances the natural oxide layer, improving corrosion resistance and providing a uniform surface appearance. Electroplating options include Nickel plating for enhanced wear resistance, Tin plating for improved solderability, and Chrome plating for decorative applications.

Specialized surface treatments include chemical blackening for improved appearance and reduced reflectivity, organic coatings for enhanced corrosion protection in severe environments, and mechanical polishing for high-gloss decorative finishes. All surface treatments are applied in accordance with relevant international standards and undergo rigorous quality control testing to ensure adhesion, thickness, and performance characteristics meet specified requirements.

Why Choose Our Silicon Bronze Cold Forged Parts

Three decades of global manufacturing experience has positioned us as a trusted supplier of Silicon Bronze cold forged parts to customers worldwide. Our commitment to quality excellence is demonstrated through our ISO 9001:2015 certification and comprehensive quality management system that ensures consistent product quality and customer satisfaction. We offer faster turnaround times compared to industry standards through our efficient production planning and streamlined manufacturing processes, enabling customers to meet tight project deadlines without compromising on quality.

Our superior customer support includes dedicated technical assistance for material selection, design optimization, and application engineering support throughout the product development cycle. We pride ourselves on excellent communication skills with multilingual technical support staff who provide prompt responses to customer inquiries and maintain regular communication throughout the production process. Our ability to customize products according to specific customer requirements, combined with flexible production scheduling, allows us to accommodate unique design specifications and delivery requirements.

We offer customized packaging solutions with customer labels and logos, enabling seamless integration into customer supply chains and brand requirements. Our global export experience includes comprehensive documentation support for international shipments, compliance with various country-specific regulations, and established logistics networks for efficient worldwide delivery. Competitive pricing without compromising on quality, combined with reliable supply chain management and consistent product availability, makes us the preferred choice for Silicon Bronze cold forged parts.

Packaging and Shipping

Our Silicon Bronze cold forged parts are packaged using industry-standard methods to ensure protection during transit and long-term storage. Standard packaging includes individual plastic bags for small parts, cardboard boxes with foam inserts for medium-sized components, and wooden crates for large or heavy items. All packaging materials are selected to prevent galvanic corrosion and provide moisture protection during shipping and storage. Customized packaging solutions are available with customer logos, part numbers, and specific labeling requirements to support customer inventory management systems.

We utilize established shipping networks including major international carriers such as DHL, FedEx, and UPS for express shipments, and sea freight for large volume orders. All shipments include comprehensive documentation including commercial invoices, packing lists, certificates of compliance, and material test certificates. Our experienced export team handles all customs documentation and regulatory compliance requirements for international shipments, ensuring smooth delivery to destinations worldwide.

Frequently Asked Questions

Q: What are the advantages of cold forging over hot forging for Silicon Bronze parts?
A: Cold forging of Silicon Bronze parts offers several advantages including improved mechanical properties through work hardening, better dimensional accuracy, superior surface finish, reduced material waste, and elimination of oxidation issues associated with hot forging processes.

Q: What is the minimum order quantity for Silicon Bronze cold forged parts?
A: Our minimum order quantity varies depending on the component complexity and size, typically ranging from 1,000 pieces for standard fasteners to 100 pieces for complex custom components. We can accommodate smaller quantities for prototypes and development projects.

Q: Can you provide material certificates for Silicon Bronze cold forged parts?
A: Yes, we provide comprehensive material certificates including chemical composition analysis, mechanical property test results, and compliance certificates for relevant international standards such as ASTM, BS, DIN, and JIS requirements.

Q: What surface finishes are available for Silicon Bronze cold forged parts?
A: We offer various surface finishes including natural Silicon Bronze finish, passivation treatment, electroplating (Nickel, Tin, Chrome), chemical blackening, organic coatings, and mechanical polishing to meet specific application requirements and aesthetic preferences.

Q: How do Silicon Bronze cold forged parts perform in marine environments?
A: Silicon Bronze cold forged parts exhibit exceptional performance in marine environments due to their inherent resistance to seawater corrosion, stress corrosion cracking, and marine organism attack. The corrosion rate in seawater is typically 0.002-0.005 mm/year, making them ideal for long-term marine applications.

Q: What quality control measures are implemented during production?
A: Our quality control system includes incoming material inspection, in-process monitoring of cold forging parameters, dimensional verification using CMM equipment, mechanical property testing, surface finish measurement, and final inspection before packaging. We maintain ISO 9001:2015 certification for comprehensive quality management.

Q: Can Silicon Bronze cold forged parts be customized for specific applications?
A: Yes, we specialize in customizing Silicon Bronze cold forged parts according to customer specifications including special dimensions, thread configurations, head styles, material grades, and surface treatments. Our engineering team provides design support and feasibility analysis for custom requirements.

Q: What is the temperature range for Silicon Bronze cold forged parts operation?
A: Silicon Bronze cold forged parts can operate effectively in temperature ranges from -200°C to +400°C, depending on the specific alloy composition and application requirements. The material maintains good mechanical properties and corrosion resistance throughout this temperature range.

Q: How do you ensure dimensional accuracy in cold forged Silicon Bronze parts?
A: Dimensional accuracy is achieved through precision die design, controlled cold forging parameters, regular tooling maintenance, and comprehensive inspection using coordinate measuring machines (CMM) and other precision instruments. We maintain tolerances of ±0.05mm for critical dimensions.

Q: What packaging options are available for international shipments?
A: We provide various packaging options including plastic bags for small parts, cardboard boxes with protective inserts, wooden crates for large components, and customized packaging with customer labels and logos. All packaging is designed to prevent corrosion and damage during international shipping.

Q: Do you provide technical support for material selection and application engineering?
A: Yes, our experienced technical team provides comprehensive support for material selection, design optimization, application engineering, and troubleshooting. We work closely with customers to ensure optimal performance of Silicon Bronze cold forged parts in their specific applications.

Dimensional Charts and Specifications

Glossary of Technical Terms

Cold Forging: A metal forming process where Silicon Bronze is shaped at room temperature through controlled plastic deformation using high pressure, resulting in improved mechanical properties and dimensional accuracy.

Work Hardening: The strengthening of Silicon Bronze material that occurs during cold forging due to plastic deformation, resulting in increased yield strength and tensile strength compared to the original material.

Silicon Bronze: A Copper alloy containing 1.5-3.5% Silicon as the primary alloying element, known for its excellent corrosion resistance, high strength, and good electrical conductivity.

Grain Flow: The directional orientation of the metal grain structure that follows the shape of the cold forged part, providing enhanced mechanical properties along the direction of material flow.

Stress Relieving: A heat treatment process performed after cold forging to reduce internal stresses and improve dimensional stability of Silicon Bronze components.

Dezincification: A form of corrosion affecting Copper alloys where Zinc is selectively removed, leaving behind a porous Copper structure. Silicon Bronze is highly resistant to this phenomenon.

Galvanic Corrosion: Corrosion that occurs when two dissimilar metals are in electrical contact in the presence of an electrolyte. Silicon Bronze’s position in the galvanic series makes it compatible with many other metals.

Thread Rolling: A cold forming process used to create threads on Silicon Bronze fasteners by pressing the material between dies, resulting in stronger threads compared to cutting methods.

Passivation: A surface treatment that enhances the natural oxide layer on Silicon Bronze, improving corrosion resistance and providing uniform appearance.

Tolerance Class: A standardized system for specifying the dimensional accuracy of threaded fasteners, with 6H being the standard class for Silicon Bronze nuts and bolts.

International Standards Compliance

Our Unique Selling Propositions

Advanced Manufacturing Capabilities: Our state-of-the-art cold forging equipment includes multi-station progressive forming machines capable of producing complex Silicon Bronze components with exceptional precision and consistency. We invest continuously in technology upgrades and process improvements to maintain our competitive edge in Silicon Bronze cold forging.

Flexibility in Production Planning: We offer flexible production scheduling to accommodate customer requirements including expedited deliveries, phased shipments, and just-in-time manufacturing support. Our production planning system allows real-time adjustments to meet changing customer demands without compromising quality standards.

Customized Packaging Solutions: We provide comprehensive packaging services including custom labeling with customer logos, part numbers, and specifications. Our packaging options range from individual component packaging to bulk shipping containers, all designed to prevent damage and corrosion during transit and storage.

Global Supply Chain Management: Our extensive experience in international trade includes established relationships with shipping companies, customs brokers, and logistics providers worldwide. We handle all export documentation, regulatory compliance, and shipping arrangements to ensure smooth delivery to global destinations.

Technical Innovation: Our research and development team continuously works on improving cold forging processes, developing new Silicon Bronze alloy compositions, and optimizing manufacturing techniques to enhance product performance and reduce costs for our customers.

Quality Assurance Excellence: Beyond our ISO 9001:2015 certification, we maintain additional quality certifications specific to aerospace, marine, and automotive industries. Our quality management system includes statistical process control, continuous improvement initiatives, and customer feedback integration.