CDA 836 Bronze Casting, LG2 Gunmetal Casting & 85-5-5-5 Bronze Casting Foundry
Premium Quality Bronze and Gunmetal Castings from India’s Leading Foundry
Overview & Company Introduction
We are one of the leading manufacturers and exporters of CDA 836 Bronze Casting, LG2 Gunmetal Casting, and 85-5-5-5 Bronze Casting from India. We have been supplying high-quality Bronze and Gunmetal castings to the world market for many decades. Our state-of-the-art foundry facilities specialize in precision investment casting and sand casting of various Bronze alloys including C83600 UNS Bronze, Leaded Bronze, and specialized Gunmetal compositions. With over three decades of global exposure and experience in the Bronze casting industry, we serve diverse sectors including marine, electrical, plumbing, automotive, and industrial applications. Our comprehensive range includes precision-engineered Bronze pipe fittings, electrical hotline clamps, water pump components, valve bodies, bushings, and custom Bronze castings manufactured to international standards including ASTM B584, BS 1400, DIN 1705, and JIS H5111. We combine traditional foundry expertise with modern manufacturing techniques to deliver superior quality Bronze castings with exceptional dimensional accuracy, surface finish, and mechanical properties that exceed industry expectations.
🏭 Bronze Casting Excellence
CAD/CAM Design
Induction Furnace
Investment/Sand Casting
CNC Precision
Testing & Inspection
CDA 836 Bronze Casting
CDA 836 Bronze Casting, also known as Leaded Red Brass, represents one of the most versatile and widely used Bronze alloys in industrial applications. This high-performance alloy composition typically contains 85% Copper, 5% Tin, 5% Lead, and 5% Zinc, making it ideal for applications requiring excellent machinability, corrosion resistance, and pressure tightness. Our CDA 836 Bronze foundry operations utilize advanced investment casting and sand casting technologies to produce complex geometries with superior dimensional accuracy. The alloy’s exceptional bearing properties and anti-friction characteristics make it perfect for manufacturing bushings, bearings, valve components, pump housings, and marine hardware. We maintain strict quality control throughout the casting process, ensuring conformance to ASTM B584 specifications and delivering castings with optimal mechanical properties including tensile strength of 240-310 MPa and excellent corrosion resistance in marine environments.
C83600 UNS Bronze Casting
C83600 UNS Bronze Casting is a premium Leaded Red Brass alloy extensively used in high-pressure applications and marine environments. Our foundry specializes in producing C83600 Bronze castings with exceptional mechanical properties and superior corrosion resistance. This alloy’s composition of 85% Copper, 5% Tin, 5% Lead, and 5% Zinc provides excellent castability, machinability, and pressure tightness, making it the preferred choice for valve bodies, pipe fittings, pump components, and marine propeller hubs. Our C83600 investment casting process ensures dimensional accuracy within ±0.13mm tolerance, while our sand casting capabilities accommodate large and complex geometries. The alloy meets stringent international standards including ASTM B584, ASME SB584, and various naval specifications, making it ideal for critical applications in shipbuilding, offshore platforms, and high-pressure fluid systems.
Leaded Bronze Casting
Leaded Bronze Casting encompasses our comprehensive range of Lead-containing Bronze alloys designed for superior machinability and bearing applications. The strategic addition of Lead content (typically 2-10%) enhances the alloy’s self-lubricating properties, reduces friction coefficients, and significantly improves machinability without compromising structural integrity. Our Leaded Bronze foundry operations produce high-quality castings for bearing assemblies, thrust washers, sleeve bearings, worm gears, and valve seats. We offer various Leaded Bronze compositions including C83600, C84400, and C93200 to meet specific application requirements. Our casting processes include both centrifugal casting for cylindrical components and static casting for complex shapes, ensuring optimal material distribution and mechanical properties. All Leaded Bronze castings undergo comprehensive quality testing including chemical analysis, mechanical property verification, and dimensional inspection to guarantee conformance to customer specifications and international standards.
LG2 Gunmetal Casting
LG2 Gunmetal Casting represents our premium grade Admiralty Gunmetal specifically formulated for marine and high-pressure applications. This specialized Bronze alloy, conforming to BS 1400 LG2 specifications, contains 88% Copper, 10% Tin, and 2% Zinc, providing exceptional strength, corrosion resistance, and fatigue performance in harsh marine environments. Our LG2 Gunmetal foundry utilizes advanced melting and alloying techniques to ensure homogeneous material properties and superior casting quality. The alloy’s outstanding resistance to seawater corrosion, dezincification, and stress corrosion cracking makes it the preferred choice for marine propellers, stern tubes, sea water pumps, valve bodies, and ship fittings. We employ both sand casting and investment casting processes to manufacture LG2 Gunmetal components with complex geometries and tight tolerances, serving the global marine industry with components that meet Lloyd’s Register, DNV-GL, and other maritime classification society requirements.
85-5-5-5 Bronze Casting
85-5-5-5 Bronze Casting, also designated as Red Brass or Naval Brass, features the optimal composition of 85% Copper, 5% Tin, 5% Lead, and 5% Zinc for superior casting characteristics and mechanical performance. This quaternary alloy represents the perfect balance between strength, corrosion resistance, machinability, and cost-effectiveness, making it highly sought after for industrial and marine applications. Our 85-5-5-5 Bronze foundry operations specialize in producing high-quality castings for pump impellers, valve components, pipe fittings, electrical hardware, and architectural elements. The alloy’s excellent fluidity during casting allows for intricate details and thin sections, while its Lead content provides superior machinability for post-casting operations. We maintain strict quality control during the melting and casting process, ensuring proper degassing, grain refinement, and chemical composition control to deliver castings with consistent mechanical properties including yield strength of 120-160 MPa and elongation of 15-25%.
Gunmetal Casting Foundry India
Our Gunmetal Casting foundry in India stands as a premier destination for high-quality Tin Bronze and Gunmetal alloy castings serving global markets. With state-of-the-art induction furnaces, advanced pattern shops, and precision casting equipment, we produce superior Gunmetal castings conforming to international standards including BS 1400, ASTM B584, DIN 1705, and JIS H5111. Our foundry specializes in various Gunmetal grades including LG2, LG4, PB1, and custom alloy compositions tailored to specific application requirements. We utilize both traditional sand casting methods for large components and modern investment casting techniques for precision parts with complex geometries. Our comprehensive quality assurance program includes spectroscopic analysis, mechanical property testing, dimensional inspection, and non-destructive testing to ensure every Gunmetal casting meets the highest quality standards. The foundry’s strategic location in India provides cost-effective manufacturing solutions while maintaining world-class quality standards, making us the preferred Gunmetal casting supplier for international customers.
Bronze C83600 Casting Foundry India
Our specialized Bronze C83600 Casting foundry in India represents decades of expertise in manufacturing precision Leaded Red Brass components for critical applications worldwide. The foundry employs advanced melting technologies including low-frequency induction furnaces with precise temperature control and automated alloying systems to ensure consistent C83600 Bronze composition and superior casting quality. Our production capabilities encompass both high-volume production runs and custom prototype development, utilizing flexible manufacturing processes including green sand molding, no-bake sand casting, and lost wax investment casting. The foundry’s quality management system is certified to ISO 9001:2015 standards, with rigorous incoming material inspection, in-process monitoring, and final product testing protocols. We maintain comprehensive testing facilities including spectrometers for chemical analysis, universal testing machines for mechanical properties, and coordinate measuring machines for dimensional verification, ensuring every C83600 Bronze casting meets customer specifications and international standards.
Investment Casting of Bronze
Investment casting of Bronze, also known as the lost wax casting process, represents our premium manufacturing capability for producing high-precision Bronze components with exceptional surface finish and dimensional accuracy. Our investment casting facility utilizes advanced wax injection systems, ceramic shell building equipment, and precision dewaxing autoclaves to create complex Bronze castings with tolerances as tight as ±0.05mm. The process begins with precision wax pattern creation using aluminum or steel dies, followed by ceramic shell building through multiple dipping and stuccoing cycles using refractory materials. After dewaxing and shell firing, we pour molten Bronze alloys including C83600, C95400, and specialized compositions under controlled atmospheric conditions. Investment cast Bronze components exhibit superior mechanical properties, excellent surface finish (Ra 1.6-3.2μm), and minimal machining requirements, making them ideal for valve bodies, pump housings, electrical fittings, marine hardware, and architectural elements. Our investment casting process accommodates part weights from 10 grams to 50 kilograms with complex internal passages and undercuts impossible to achieve through conventional casting methods.
Sand Casting C83600 Bronze
Sand casting C83600 Bronze represents our large-scale manufacturing capability for producing robust and cost-effective Bronze components with excellent mechanical properties and structural integrity. Our sand casting foundry employs both green sand molding and no-bake sand systems to accommodate diverse component sizes and production volumes. The green sand process utilizes high-quality silica sand, bentonite clay binder, and controlled moisture content to create dimensionally stable molds suitable for C83600 Bronze castings up to 500 kg weight. Our no-bake sand system uses furan or phenolic resin binders for superior dimensional accuracy and surface finish, ideal for complex geometries and tight tolerance requirements. The foundry’s melting department features medium-frequency induction furnaces with automatic temperature control and degassing systems to ensure optimal C83600 Bronze quality with minimal gas porosity and inclusions. Sand cast C83600 Bronze components undergo comprehensive heat treatment including stress relief and artificial aging when required, resulting in castings with tensile strength of 240-310 MPa, yield strength of 110-140 MPa, and excellent machinability characteristics.
Gunmetal Casting and Fittings
Gunmetal Casting and Fittings manufacturing represents our specialized expertise in producing high-performance Bronze alloy components for marine, plumbing, and industrial fluid systems. Our comprehensive range includes Gunmetal pipe fittings, valve bodies, pump casings, flanges, elbows, tees, reducers, and custom-engineered components conforming to international pipe fitting standards including ASME B16.15, BS 143/1256, and DIN 2999. The manufacturing process combines precision casting with state-of-the-art CNC machining to achieve tight tolerances and superior surface finish. Our Gunmetal fittings are manufactured from premium alloys including LG2, LG4, and PB1 grades offering exceptional corrosion resistance, pressure rating up to 25 bar, and temperature resistance up to 200°C. We employ advanced quality control measures including hydrostatic pressure testing, dimensional inspection using coordinate measuring machines, and comprehensive material traceability throughout the production process. Our Gunmetal casting and fitting products serve critical applications in marine vessels, offshore platforms, desalination plants, chemical processing facilities, and high-pressure water systems worldwide.
Standard | Grade | Cu (%) | Sn (%) | Pb (%) | Zn (%) | Application |
---|---|---|---|---|---|---|
ASTM B584 | C83600 | 85 | 5 | 5 | 5 | Valves, Fittings, Pumps |
BS 1400 | LG2 | 88 | 10 | – | 2 | Marine Components |
DIN 1705 | CuSn5Zn5Pb5 | 85 | 5 | 5 | 5 | Industrial Fittings |
JIS H5111 | CAC403 | 85 | 5 | 5 | 5 | Bearing Applications |
IS 318 | G-Pb10 | 88 | 10 | – | 2 | Marine Hardware |
GB/T 1176 | ZCuSn5Zn5Pb5 | 85 | 5 | 5 | 5 | Valve Components |
Typical Bronze Casting Applications & Components
Plumbing & Pipe Fittings
Bronze elbows, tees, nipples, unions, reducers, couplings, flanges, gate valves, globe valves, check valves, ball valves, pressure regulators
Electrical Components
Electrical hotline clamps, bus bar clamps, grounding clamps, cable lugs, junction boxes, conduit fittings, electrical terminals
Marine & Offshore
Propeller hubs, stern tubes, sea strainers, through-hull fittings, rudder bearings, shaft brackets, marine valves
Industrial Machinery
Water pump parts, pump impellers, pump housings, bearing housings, bushings, thrust washers, wear plates
Alloy Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) | Density (g/cm³) |
---|---|---|---|---|---|
C83600 (85-5-5-5) | 240-310 | 110-140 | 15-25 | 60-85 | 8.8 |
LG2 Gunmetal | 270-340 | 130-170 | 12-20 | 70-95 | 8.9 |
CDA 836 | 240-310 | 110-140 | 15-25 | 60-85 | 8.8 |
C84400 | 275-345 | 125-155 | 12-18 | 75-100 | 8.9 |
Manufacturing Processes & Machinery
Our advanced Bronze casting manufacturing processes combine traditional foundry expertise with modern technology to ensure superior quality and precision. The foundry employs medium-frequency induction furnaces (1500°C capacity) for precise melting and alloying, automated pouring systems for consistent casting quality, and computer-controlled heat treatment furnaces for optimal mechanical properties. Our investment casting line features high-pressure wax injection machines, robotic ceramic shell builders, steam dewaxing autoclaves, and vacuum casting capabilities for complex geometries. The sand casting department utilizes automated molding machines, core shooting equipment, and high-efficiency sand reclamation systems. Post-casting operations include CNC machining centers, coordinate measuring machines, spectrometers for chemical analysis, and comprehensive testing laboratories. Quality assurance equipment includes ultrasonic testing, liquid penetrant inspection, and hydrostatic testing capabilities ensuring every casting meets international standards and customer specifications.
Quality Standards & Tolerances
Our Bronze casting quality management system maintains strict adherence to international standards including ISO 9001:2015, ASTM B584, BS 1400, DIN 1705, and customer-specific requirements. Standard dimensional tolerances for investment cast Bronze components range from ±0.05mm to ±0.13mm depending on part geometry and size. Sand cast Bronze parts achieve tolerances of ±0.25mm to ±0.5mm with superior surface finish. Our quality control process includes incoming material inspection, in-process monitoring, chemical composition verification using optical emission spectrometry, mechanical property testing, dimensional inspection using CMM equipment, and final inspection before shipping. All Bronze castings undergo comprehensive documentation including material certificates, test reports, and traceability records ensuring complete quality assurance for critical applications.
Casting Process | Dimensional Tolerance | Surface Finish (Ra) | Minimum Wall Thickness | Maximum Part Weight |
---|---|---|---|---|
Investment Casting | ±0.05mm to ±0.13mm | 1.6-3.2 μm | 0.8mm | 50 kg |
Sand Casting | ±0.25mm to ±0.5mm | 6.3-12.5 μm | 3.0mm | 500 kg |
Centrifugal Casting | ±0.15mm to ±0.3mm | 3.2-6.3 μm | 2.0mm | 200 kg |
Industries Served
Our Bronze casting products serve diverse industries worldwide including marine and offshore applications for shipbuilding, yacht manufacturing, and offshore platform construction. The electrical and power generation sector utilizes our Bronze components for transmission line hardware, switchgear components, and electrical fittings. Water and wastewater treatment facilities rely on our corrosion-resistant Bronze valves, pumps, and fittings. The oil and gas industry employs our Bronze castings for wellhead equipment, refinery components, and pipeline fittings. Chemical and petrochemical plants use our Bronze components for process equipment, valve bodies, and pump housings. Plumbing and HVAC applications include residential and commercial fittings, valves, and system components. Industrial machinery manufacturers incorporate our Bronze bearings, bushings, and wear components into heavy equipment, textile machinery, and manufacturing systems.
Turnaround Time & Production Capability
Our streamlined production processes ensure efficient turnaround times while maintaining superior quality standards. Standard Bronze casting delivery schedules range from 4-6 weeks for production quantities, with expedited service available for urgent requirements. Prototype and sample casting development typically requires 2-3 weeks from approved drawings or samples. Our production capacity accommodates both small batch orders (minimum 10 pieces) and large volume production runs exceeding 10,000 pieces annually. The foundry operates multiple shifts to maximize production efficiency and meet customer delivery requirements. Rush orders can be accommodated with dedicated production scheduling and expedited processing, ensuring critical customer needs are met without compromising quality standards. Our integrated supply chain management and strategic inventory planning help maintain consistent delivery performance and customer satisfaction.
Technical Specifications & Performance Metrics
Element | C83600 | LG2 | 85-5-5-5 | C84400 | Test Method |
---|---|---|---|---|---|
Copper (Cu) | 84.0-86.0% | 87.0-89.0% | 84.0-86.0% | 79.0-81.0% | OES Analysis |
Tin (Sn) | 4.0-6.0% | 9.0-11.0% | 4.0-6.0% | 6.0-8.0% | OES Analysis |
Lead (Pb) | 4.0-6.0% | 0.5% Max | 4.0-6.0% | 6.0-8.0% | OES Analysis |
Zinc (Zn) | 4.0-6.0% | 1.0-3.0% | 4.0-6.0% | 4.0-6.0% | OES Analysis |
Iron (Fe) | 0.35% Max | 0.25% Max | 0.35% Max | 0.35% Max | OES Analysis |
Why Choose Our Bronze Casting Services
Our competitive advantages in the Bronze casting industry stem from three decades of global experience, advanced manufacturing capabilities, and unwavering commitment to quality excellence. We offer faster turnaround times through streamlined production processes and strategic inventory management, typically delivering orders within 4-6 weeks compared to industry standards of 8-12 weeks. Our superior customer support includes dedicated project managers, technical consulting services, and responsive communication throughout the project lifecycle. Exceptional communication skills and multilingual support ensure clear project understanding and seamless international collaboration. Our global exposure and experience of over 30 years provides deep understanding of diverse market requirements and international quality standards. We offer customization flexibility in alloy compositions, casting processes, and finishing operations to meet specific customer requirements. Flexible production scheduling accommodates urgent orders and changing customer needs. Our customized packaging solutions include customer labeling, logo branding, and specialized shipping arrangements for international markets. Cost-effective manufacturing in India combined with world-class quality standards provides superior value proposition for global customers.
Packaging, Shipping & Customer Service
Our comprehensive packaging and shipping services ensure safe delivery of Bronze castings to global destinations. Standard packaging includes anti-corrosion treatment, protective wrapping, cushioned containers, and waterproof coverings suitable for international shipping. We offer customized packaging solutions with customer logos, labeling, and specific packaging requirements for retail or industrial applications. Our logistics partnerships enable efficient shipping via sea freight, air cargo, or express delivery services to meet customer deadlines. Export documentation services include commercial invoices, packing lists, certificates of origin, and quality certificates required for international trade. Professional customer service support provides order tracking, shipping updates, and post-delivery assistance ensuring complete customer satisfaction throughout the supply chain process.
Customer Testimonial
Michael Rodriguez, Procurement Manager, TX
“Working with this Bronze casting foundry has been exceptional for our marine valve projects. Their LG2 Gunmetal castings consistently exceed our quality expectations with superior corrosion resistance and dimensional accuracy. The technical support team’s expertise in marine applications and their ability to customize alloy compositions for our specific seawater environments has been invaluable. Delivery schedules are always met, and their competitive pricing has improved our project margins significantly. After three years of partnership, they remain our preferred supplier for all Bronze and Gunmetal casting requirements.”
Frequently Asked Questions (FAQ)
What is the difference between CDA 836 and C83600 Bronze?
CDA 836 and C83600 represent the same alloy designation under different standards – CDA (Copper Development Association) and UNS (Unified Numbering System). Both specify the 85-5-5-5 composition with 85% Copper, 5% Tin, 5% Lead, and 5% Zinc.
What casting tolerances can you achieve?
Investment casting: ±0.05mm to ±0.13mm, Sand casting: ±0.25mm to ±0.5mm. Tighter tolerances possible with post-casting machining operations.
What is the minimum order quantity?
Our minimum order quantity is typically 10 pieces for custom castings, though we can accommodate smaller prototype orders for development projects.
Do you provide material certificates?
Yes, we provide comprehensive material certificates including chemical analysis, mechanical property test results, and conformance to specified standards for every shipment.
What surface finishes are available?
Standard as-cast finish, shot blasting, machining, polishing, passivation, and specialized coatings depending on application requirements.
Can you cast complex internal geometries?
Yes, our investment casting process excels at complex internal passages, undercuts, and intricate details impossible with conventional casting methods.
What quality standards do you follow?
ISO 9001:2015, ASTM B584, BS 1400, DIN 1705, JIS H5111, and customer-specific quality requirements with full traceability documentation.
Do you offer expedited delivery?
Yes, rush orders can be accommodated with expedited production scheduling, typically reducing standard 4-6 week delivery to 2-3 weeks depending on complexity.
What industries do you serve?
Marine, electrical, plumbing, HVAC, oil & gas, chemical processing, water treatment, industrial machinery, and architectural applications worldwide.
Can you develop custom alloy compositions?
Yes, our metallurgical team can develop custom Bronze alloy compositions to meet specific performance requirements including enhanced corrosion resistance or specialized mechanical properties.
Size & Dimensional Capabilities
Process | Min Weight | Max Weight | Max Dimensions | Wall Thickness Range | Typical Applications |
---|---|---|---|---|---|
Investment Casting | 10g | 50kg | 600 x 400 x 300mm | 0.8-50mm | Precision fittings, valves |
Sand Casting | 0.5kg | 500kg | 2000 x 1500 x 1000mm | 3-150mm | Large pump housings, valve bodies |
Centrifugal Casting | 0.2kg | 200kg | 1000mm dia x 2000mm | 2-100mm | Cylindrical components, bearings |
Glossary of Bronze Casting Terms
Investment Casting
Precision casting process using disposable wax patterns and ceramic molds, also known as lost wax casting, producing high-accuracy components with excellent surface finish.
Gunmetal
High-tin Bronze alloy traditionally containing 88% Copper and 10-12% Tin, known for excellent corrosion resistance and strength, commonly used in marine applications.
Leaded Bronze
Bronze alloys containing Lead addition (2-10%) for improved machinability and bearing properties, commonly used in bushings and wear applications.
Sand Casting
Traditional casting process using sand molds, suitable for large components and high production volumes with good dimensional accuracy and cost-effectiveness.
Related Parts:
Bronze foundry India, Copper alloy casting, Red Brass casting, Naval Brass components, Bronze valve casting, Marine Bronze casting, Tin Bronze alloy, Bronze pipe fittings manufacturer, Electrical Bronze hardware, Corrosion resistant Bronze casting, High strength Bronze alloy, Precision Bronze components, Custom Bronze casting, Bronze bushing manufacturer, Marine propeller Bronze, Bronze bearing casting, Industrial Bronze components, Architectural Bronze casting, Bronze sculpture casting, Antique Bronze finish, Bronze art casting, Decorative Bronze elements, Bronze restoration casting.
In other Ling0-
German:
CDA 836 Bronzeguss, LG2 Rotgussguss, 85-5-5-5 Bronzegießerei, Rotgussgießerei, bleihaltiger Bronzeguss
Russian:
Литье бронзы CDA 836, Литье пушечного металла LG2, Литейный завод бронзы 85-5-5-5, Литейный завод пушечного металла, Литье свинцовистой бронзы
French:
Fonderie de bronze CDA 836, Fonderie de métal canon LG2, Fonderie de bronze 85-5-5-5, Fonderie de métal canon, Fonderie de bronze au plomb
Spanish:
Fundición de bronce CDA 836, Fundición de metal de cañón LG2, Fundición de bronce 85-5-5-5, Fundición de metal de cañón, Fundición de bronce con plomo
Ready to Get Started with Premium Bronze Castings?
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Send us an email at sales@brass-copper-parts. com for more details.
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Leading Bronze Casting Manufacturer & Exporter from India | ISO 9001:2015 Certified | Global Shipping Available