Comprehensive Overview of Aluminum Bronze Casting Services
We are one of the leading manufacturers and exporters of Aluminum Bronze Castings, High-Strength Bronze Castings, and Marine Bronze Components from India. We have been supplying high-quality aluminum bronze pump impellers, aluminum bronze valve bodies, aluminum bronze propellers, aluminum bronze gears, aluminum bronze bearings and bushings, aluminum bronze wear plates, and custom aluminum bronze castings to the world market for many decades. Our state-of-the-art foundry specializes in producing premium aluminum bronze castings using advanced sand casting, investment casting (lost wax), permanent mold casting, centrifugal casting, CNC machining, heat treatment, and comprehensive quality control systems. With over three decades of global experience in aluminum bronze casting, we serve diverse industries including marine and shipbuilding (propellers, propulsion components, seawater pumps), offshore oil and gas (high-pressure valves, pump components, subsea equipment), industrial pumps (slurry pump impellers, seawater pump parts, corrosion-resistant components), power generation (turbine components, condenser parts, cooling system components), chemical processing (valve bodies, pump casings, corrosion-resistant fittings), mining and mineral processing (wear-resistant components, slurry handling parts), aerospace and defense (landing gear bushings, high-strength components), and heavy equipment (gears, bushings, wear plates, structural components). Our expertise encompasses working with various aluminum bronze alloys including Aluminum Bronze C95400 (most common – 11% Al, excellent strength and corrosion resistance), Aluminum Bronze C95500 (11% Al, 4% Ni, superior corrosion resistance), Aluminum Bronze C95800 (9% Al, 5% Ni, maximum corrosion resistance), Nickel-Aluminum Bronze C95200 (9% Al, 3% Fe, enhanced properties), Aluminum Bronze C95900 (special high-strength formulation), and custom aluminum bronze alloys for specific applications. We manufacture aluminum bronze castings ranging from 100 grams to 500 kg with dimensions from 50mm to 2000mm, maintaining tensile strength 550-900 MPa, yield strength 230-450 MPa, excellent seawater corrosion resistance <0.005 mm/year, superior cavitation and erosion resistance, compliance with ASTM B148, ASTM B150, ASTM B271, SAE J461, AMS standards, and reliable 30-60+ year service life in demanding marine, industrial, and heavy-duty applications.
Aluminum Bronze Alloys and Properties
Aluminum Bronze is a family of copper-aluminum alloys (typically 5-11% aluminum) with additions of iron, nickel, manganese providing exceptional strength, excellent corrosion resistance, superior wear resistance, making them ideal for marine propulsion, pumps, valves, gears, and structural applications requiring high strength combined with corrosion resistance.
Key Aluminum Bronze Alloys
Aluminum Bronze C95400 (9% Al): Composition 85% Cu, 11% Al, 4% Fe, tensile strength 620-690 MPa, yield strength 275-310 MPa, elongation 12-18%, hardness 170-210 HB, excellent castability and machinability, good seawater corrosion resistance, most widely used aluminum bronze for general marine and industrial applications, cost-effective with proven performance, applications in pump impellers, valve bodies, propellers, gears, marine hardware, pressure rating up to 600 PSI.
Aluminum Bronze C95500 (11% Al, 4% Ni): Composition 81% Cu, 11% Al, 4% Fe, 4% Ni, tensile strength 655-760 MPa, yield strength 310-380 MPa, elongation 12-15%, hardness 180-230 HB, superior corrosion resistance from nickel addition, enhanced mechanical properties, better high-temperature performance, applications in critical marine propulsion, offshore equipment, high-pressure pumps, seawater valves, naval components.
Aluminum Bronze C95800 (9% Al, 5% Ni, 5% Fe): Composition 79% Cu, 9% Al, 5% Fe, 5% Ni, tensile strength 690-790 MPa, yield strength 345-415 MPa, highest corrosion resistance among aluminum bronzes, maximum nickel content for extreme environments, excellent weldability, applications in subsea equipment, offshore platforms, naval vessels, chemical processing, extreme marine environments.
Nickel-Aluminum Bronze C95200 (9% Al, 3% Fe): Composition 88% Cu, 9% Al, 3% Fe, tensile strength 655-725 MPa, balanced properties for structural applications, good combination strength and ductility, applications in marine structural components, gears, bearings, wear-resistant parts.
Aluminum Bronze Property Comparison
| Alloy | Tensile Strength | Yield Strength | Hardness | Corrosion Rate Seawater | Relative Cost |
|---|---|---|---|---|---|
| C95400 | 620-690 MPa | 275-310 MPa | 170-210 HB | <0.005 mm/year | Baseline |
| C95500 | 655-760 MPa | 310-380 MPa | 180-230 HB | <0.003 mm/year | +15-20% |
| C95800 | 690-790 MPa | 345-415 MPa | 190-240 HB | <0.002 mm/year | +25-35% |
| C95200 | 655-725 MPa | 300-365 MPa | 175-220 HB | <0.004 mm/year | +10-15% |
Superior Properties of Aluminum Bronze
Exceptional Seawater Corrosion Resistance: Aluminum forms protective aluminum oxide layer preventing corrosion, corrosion rate <0.005 mm/year in flowing seawater (10× better than carbon steel), immune to dezincification unlike brass, resistant to stress corrosion cracking, excellent in saltwater, brackish water, polluted seawater, 40-60+ year service life documented in marine environments.
High Strength and Toughness: Tensile strength 620-790 MPa (2-3× stronger than standard bronzes), superior to brass, tin bronze, even many stainless steels, maintains strength at elevated temperatures up to 300°C, excellent impact resistance and toughness, suitable for high-stress structural applications, pressure ratings 600-1500 PSI achievable.
Superior Cavitation and Erosion Resistance: Best cavitation resistance among copper alloys, withstands high-velocity water flow >10 m/s, resistant to erosion from abrasive particles, ideal for pump impellers, propellers, high-flow valves, slurry handling applications, 5-10× longer life than cast iron in erosive service.
Excellent Wear Resistance: Hardness 170-240 HB provides good wear resistance, suitable for gears, bearings, bushings, wear plates, self-lubricating properties reducing friction, maintains properties under repeated loading, applications in sliding and rolling contact.
Low Magnetic Permeability: Non-magnetic properties important for naval minesweepers, magnetic resonance equipment, compass housings, scientific instruments, subsea equipment near magnetic sensors.
Spark Resistance: Non-sparking when struck against steel, safe for explosive atmospheres, oil and gas applications, chemical plants, mining equipment in methane environments.
Weldability and Repairability: Aluminum bronze C95800 offers excellent weldability, components can be repaired by welding, reduced replacement costs, extended service life through repair, important for expensive large castings.
Aluminum Bronze Casting Processes
Sand Casting
Process: Green sand or resin-bonded sand molds for aluminum bronze, suitable for all sizes 50mm to 2000mm+, single castings 0.1 kg to 500 kg+, complex geometries achievable, wall thickness 3-50mm range, dimensional tolerance ±1.5-3.0mm as-cast requiring machining. Advantages: Economical for low to medium volumes, complex shapes possible, large casting capability, rapid pattern changes, suitable for prototypes and production. Applications: Pump casings, valve bodies, large impellers, propellers, structural components, custom one-off castings. Production Volume: Economical for 10-10,000+ pieces annually.
Investment Casting (Lost Wax)
Process: Wax patterns coated with ceramic shell, wax melted out and aluminum bronze poured, precision process achieving tight tolerances ±0.5-1.0mm, excellent surface finish Ra 3.2-6.3 μm as-cast, suitable for small to medium castings 50-500mm, complex internal passages achievable, near-net-shape reducing machining. Advantages: Superior dimensional accuracy, excellent surface finish, complex geometries with thin walls 2-5mm, minimal machining required, premium appearance. Applications: Pump impellers, valve trim, precision marine hardware, aerospace components, high-value parts. Production Volume: Economical for 100-50,000 pieces, higher tooling cost amortized over production.
Permanent Mold Casting
Process: Reusable metal molds (typically cast iron or steel) for aluminum bronze casting, dimensional consistency ±1.0-2.0mm better than sand casting, faster production rates 20-100 pieces/day depending on size, enhanced mechanical properties from faster cooling, limited to simpler geometries versus sand casting. Advantages: Better dimensional control, improved surface finish, higher production rates, enhanced mechanical properties, consistent quality. Applications: High-volume production of standard components, bushings, bearings, wear plates, gears. Production Volume: Economical for >5,000 pieces annually with dedicated tooling.
Centrifugal Casting
Process: Molten aluminum bronze poured into rotating mold, centrifugal force densifying casting, eliminates porosity in cylindrical parts, enhanced mechanical properties, suitable for bushings, bearings, tubes, sleeves 50-500mm diameter. Advantages: Dense defect-free castings, superior mechanical properties, excellent for cylindrical components, extended service life from enhanced properties. Applications: Large bushings for marine shafts, pump shaft sleeves, bearing housings, wear bushings for mining equipment, cylindrical structural components. Production Volume: Economical for 50-5,000 pieces depending on size.
Continuous Casting
Process: Continuous casting of aluminum bronze bars, rods, tubes for subsequent machining or forging, consistent material properties, high production volumes, reduced material waste. Applications: Bar stock for machined components, tube blanks for bushings, rod stock for pins and shafts.
Heat Treatment and Mechanical Enhancement
Aluminum Bronze Heat Treatment
Solution Annealing: Heating aluminum bronze to 870-950°C for 1-3 hours, rapid water quench, dissolves secondary phases achieving single-phase microstructure, improves ductility and toughness, eliminates casting stresses, prepares material for subsequent tempering or use in annealed condition.
Tempering/Aging: Heating solution-annealed aluminum bronze to 565-675°C for 2-6 hours, slow air cool, precipitation of fine secondary phases increasing strength and hardness, achieves optimal balance strength-ductility-corrosion resistance, standard treatment for marine applications.
Stress Relief: Heating castings to 275-425°C for 1-4 hours, slow furnace cool, removes residual casting stresses without changing microstructure, improves dimensional stability, reduces risk of stress corrosion cracking, recommended for machined precision components.
Mechanical Property Enhancement: Proper heat treatment increases tensile strength 10-15%, improves yield strength 15-25%, enhances corrosion resistance, optimizes microstructure for marine service, critical for ASTM B148 specification compliance.
Applications by Industry
Marine and Shipbuilding
Propellers and Propulsion: Aluminum bronze C95400/C95500 propellers for commercial ships, yachts, tugboats, sizes 300mm to 5000mm diameter, 4-blade, 5-blade, 6-blade configurations, controllable pitch propeller hubs and blades, thrusters and azimuth drives, superior cavitation resistance, 20-40 year service life. Pump Impellers: Seawater pump impellers for cooling systems, fire suppression, ballast pumps, closed and semi-open impeller designs, sizes 100-800mm diameter, corrosion and erosion resistance critical, centrifugally cast for enhanced properties.
Valve Components: Aluminum bronze valve bodies, gates, seats, stems for seawater service, ball valve bodies and seats, butterfly valve discs, pressure ratings 150-600 PSI, sizes 1/2″ to 12″, globe, gate, ball, butterfly, check valve designs. Shaft Components: Propeller shaft bearings and bushings, rudder bearings, shaft sleeves, sterntube bearings, water-lubricated journal bearings, self-lubricating properties, sizes 50-500mm ID.
Offshore Oil and Gas
Subsea Equipment: Aluminum bronze C95800 valve bodies for subsea trees and manifolds, high-pressure pump components up to 10,000 PSI, wellhead components, blowout preventer parts, ROV (remotely operated vehicle) components, seawater corrosion resistance 40-60 years. Platform Equipment: Fire suppression pump components, seawater intake valves and pumps, ballast system components, mooring system bushings and bearings, corrosion resistance in harsh offshore environment.
Industrial Pumps
Slurry Pumps: Aluminum bronze impellers for abrasive slurry service in mining, dredging, mineral processing, wear and corrosion resistance combination, 3-5× life versus cast iron, centrifugally cast for maximum density and properties, sizes 200-1200mm diameter. Seawater and Brackish Water Pumps: Impellers, casings, wear plates, shaft sleeves for seawater cooling, desalination feed pumps, power plant circulating water pumps, fire suppression pumps, municipal water treatment.
Chemical Processing Pumps: Corrosion-resistant pump components for aggressive chemicals, acid service (dilute sulfuric, hydrochloric), alkaline service, petroleum refining pumps, petrochemical process pumps, aluminum bronze compatibility with many chemicals.
Power Generation
Cooling Water Systems: Circulating water pump impellers for power plants using seawater or brackish water cooling, condenser components, heat exchanger parts, sizes 500-1500mm for large utility pumps, 30-50 year service life. Turbine Components: Small hydro turbine runners and guide vanes (aluminum bronze for smaller units), wicket gates, bearing housings, corrosion resistance in water turbines.
Mining and Mineral Processing
Wear Components: Aluminum bronze wear plates for chutes and hoppers, liner plates for grinding mills, pump components for abrasive slurry, conveyor components, crusher wear parts, 5-10× life versus mild steel in abrasive service. Material Handling: Bushings and bearings for mining equipment, loader and excavator pins and bushings, crusher eccentric bushings, vibrating screen bushings, self-lubricating in dusty environments.
Aerospace and Defense
Landing Gear Components: Aluminum bronze bushings for aircraft landing gear, high load capacity, corrosion resistance, non-sparking safety, sizes 50-300mm OD. Naval Applications: Aluminum bronze for naval vessels requiring non-magnetic properties, minesweeper components, magnetic sensor housings, submarine components, military specification compliance MIL-B-24480.
Defense Equipment: Tank track pins and bushings, military vehicle components, artillery components, armor mounting hardware, spark-resistant properties for safety.
Heavy Equipment and Industrial
Construction Equipment: Excavator bushings and pins, loader components, crane pins and bushings, concrete pump wear components, high-load high-wear applications, typical life 3,000-10,000 hours. Industrial Gears: Worm gears and worm wheels in aluminum bronze, spur and helical gears, gear housings, high-load low-speed applications, sizes 100-800mm diameter, alternative to steel gears with self-lubricating properties.
Manufacturing Capabilities and Quality Control
Advanced Foundry Facilities
Melting Capacity: Induction furnaces 500 kg to 5000 kg capacity for aluminum bronze melting, precise temperature control 1100-1200°C, degassing and grain refining treatments, composition control within ASTM specifications ±0.5%. Casting Production: Sand casting lines producing 50-500 aluminum bronze castings per month, investment casting facility 500-2000 small/medium castings monthly, centrifugal casting machines for cylindrical components 20-300mm diameter. Pattern Shop: CNC pattern making equipment, wood and metal patterns, 3D printing for prototype patterns, pattern library with 500+ designs, custom pattern development 2-4 weeks.
Heat Treatment Facilities
Heat Treatment Furnaces: Gas-fired and electric furnaces 500-2000 kg capacity, temperature control ±5°C, atmosphere control for oxidation prevention, quench tanks for rapid cooling, programmable heat treatment cycles per ASTM specifications. Process Control: Thermocouple monitoring throughout furnace, data logging for traceability, time-temperature recording, process certification per customer requirements.
CNC Machining Centers
Machining Equipment: 15+ CNC vertical and horizontal machining centers, 5-axis CNC machines for complex geometries, CNC turning centers for cylindrical components, precision grinding for bearing surfaces, drilling and boring operations. Capabilities: Machining aluminum bronze components to tight tolerances ±0.02-0.05mm, surface finish Ra 0.8-3.2 μm achievable, large component machining up to 2000mm, small precision parts 10mm+.
Comprehensive Quality Control
Material Testing: Optical emission spectrometry (OES) verifying aluminum bronze composition Cu, Al, Fe, Ni, Mn within ASTM B148/B150 ±0.5%, tensile testing per ASTM B557 determining tensile strength, yield strength, elongation on sample castings, hardness testing Brinell or Rockwell per ASTM E10/E18, impact testing Charpy V-notch for toughness verification.
Mechanical Property Verification: Sample castings from each batch tested for tensile properties, minimum requirements per ASTM B148: C95400 tensile 90 ksi (620 MPa), yield 40 ksi (275 MPa), elongation 12%, test certificates provided with shipments, full traceability heat number to finished casting.
Dimensional Inspection: CMM (coordinate measuring machine) inspection ±0.005mm accuracy for complex 3D geometries, precision measuring instruments (micrometers, calipers, gauges) for routine dimensions, surface finish testing with profilometers, wall thickness verification ultrasonic testing.
Non-Destructive Testing (NDT): X-ray radiography detecting internal porosity, shrinkage, inclusions per ASTM E155, ultrasonic testing for internal soundness and wall thickness per ASTM E114, liquid penetrant testing for surface cracks and defects per ASTM E1417, magnetic particle testing where applicable, pressure testing for pressure-containing components.
Metallurgical Analysis: Metallographic examination of microstructure, grain size measurement per ASTM E112, phase identification ensuring proper heat treatment, corrosion testing per ASTM G48 or customer specifications, compliance verification with ASTM standards.
Technical Standards and Specifications
ASTM Standards
ASTM B148: Standard specification for aluminum bronze sand castings, covers C95200, C95300, C95400, C95500, C95800 alloys, defines chemical composition limits ±0.5%, mechanical property minimums, testing requirements, most common specification for aluminum bronze castings. ASTM B150: Aluminum bronze rod, bar, shapes from continuous castings, material for subsequent machining. ASTM B271: Copper-base alloy centrifugal castings for enhanced properties. ASTM B505: Mechanical testing procedures for copper alloy castings.
SAE Standards
SAE J461: Copper and copper alloy castings including aluminum bronze, automotive and industrial applications, property requirements, composition specifications. SAE J462: Cast copper alloys composition and properties reference.
AMS Aerospace Standards
AMS 4880: Aluminum bronze castings for aerospace applications, stringent quality requirements, enhanced testing, traceability, used for aircraft landing gear bushings, critical aerospace components.
Military Specifications
MIL-B-24480: Aluminum bronze castings for naval and military applications, covers C95200, C95400, C95500, C95800, enhanced testing and quality requirements, mandatory for US Navy and military equipment.
Classification Society Standards
ABS, Lloyd’s Register, DNV-GL, RINA: Approval for marine aluminum bronze castings, material certification, manufacturing process approval, testing requirements, propeller shaft bearings, valve bodies, pump components, required for classed vessels.
Advantages of Aluminum Bronze Over Alternative Materials
Versus Cast Iron: Aluminum bronze 3-5× longer life in seawater and corrosive service, superior strength 620 MPa versus 200-400 MPa for cast iron, excellent corrosion resistance versus rapid corrosion of cast iron, higher initial cost offset by extended life and reduced maintenance, total lifecycle cost significantly lower.
Versus Stainless Steel 316: Comparable or superior seawater corrosion resistance, better cavitation and erosion resistance in high-velocity flow, superior wear resistance for bushings and bearings, easier casting of complex shapes, lower material cost, aluminum bronze often preferred for marine pumps and valves, stainless steel advantages in extreme acid/chloride environments.
Versus Tin Bronze (C90700): Aluminum bronze 2-3× higher strength enabling thinner sections and higher pressures, superior wear and abrasion resistance, better cavitation resistance, 5-10× better in erosive slurry service, cost comparable, tin bronze advantages in low-load bearing applications and lower-speed sliding contact.
Versus Brass: Aluminum bronze vastly superior strength 620 MPa versus 380 MPa for brass, no dezincification failure in seawater/aggressive water, 5-10× longer life in marine service, aluminum bronze essential for structural and high-stress applications, brass adequate only for low-stress freshwater.
Versus Carbon and Alloy Steels: Aluminum bronze superior corrosion resistance eliminating coatings/painting, non-magnetic for special applications, spark-resistant for safety, easier casting of complex shapes, steel advantages in highest strength applications >900 MPa and lowest cost for non-corrosive environments.
Design Guidelines for Aluminum Bronze Castings
Wall Thickness: Minimum 3-5mm for small castings, 5-8mm for medium castings, 8-15mm for large castings ensuring soundness, uniform wall thickness preferred avoiding shrinkage, gradual transitions between sections, adequate draft angles 1-3 degrees for pattern removal.
Tolerances: Sand casting ±1.5-3.0mm typical requiring machining, investment casting ±0.5-1.0mm near-net-shape, permanent mold ±1.0-2.0mm, centrifugal casting ±1.0-2.5mm, machining to ±0.02-0.05mm achievable for critical features.
Surface Finish: As-cast sand 6.3-12.5 μm Ra, as-cast investment 3.2-6.3 μm Ra, machined surfaces 0.8-3.2 μm Ra depending on operation, bearing surfaces 0.4-1.6 μm Ra for optimal performance.
Shrinkage Allowance: Aluminum bronze solidification shrinkage ~2.0%, patterns oversized accordingly, hot spots and risers designed preventing shrinkage porosity, critical dimensions machined after casting.
Corrosion Allowance: Marine components designed with 1-2mm corrosion allowance for 40-60 year life, critical dimensions oversized accounting for minimal expected corrosion <0.005 mm/year.
Why Choose Our Aluminum Bronze Casting Services
Three Decades of Aluminum Bronze Expertise
Established 1990: 30+ years producing aluminum bronze castings for marine, offshore, industrial applications across 40+ countries. Proven Performance: Delivered 500,000+ aluminum bronze castings including propellers, pump impellers, valve bodies, gears, bushings, documented 30-60 year service life in demanding applications. Certifications: ISO 9001:2015 certified, ASTM B148/B150 material compliance, working towards ABS and Lloyd’s Register approval.
Comprehensive Aluminum Bronze Alloy Portfolio
Multiple Alloys Available: C95400 for general marine/industrial (most economical), C95500 for enhanced corrosion resistance (+15-20%), C95800 for maximum corrosion resistance (+25-35%), C95200 for structural applications, custom alloy development. Material Sourcing: High-purity copper and aluminum from certified suppliers, precise composition control within ASTM specifications ±0.5%, complete material certificates with heat numbers, independent laboratory verification available.
Advanced Casting and Heat Treatment
Casting Processes: Sand casting for complex large components 0.1-500 kg, investment casting for precision small/medium parts, centrifugal casting for bushings/bearings, permanent mold for high-volume production. Heat Treatment: Solution annealing, tempering, stress relief per ASTM specifications, programmable furnaces with temperature control ±5°C, mechanical property optimization, process certification and documentation. CNC Machining: 15+ CNC centers for precision machining post-casting, tolerances ±0.02-0.05mm, surface finish Ra 0.8-3.2 μm, complete machined ready-to-install components.
Rigorous Quality Assurance
Material Testing: OES composition verification ±0.5%, tensile testing per ASTM B557, hardness testing per ASTM E10, impact testing where required, test certificates with every batch. NDT Testing: X-ray radiography per ASTM E155, ultrasonic testing per ASTM E114, liquid penetrant per ASTM E1417, pressure testing for pressure components, 100% NDT for critical applications. Dimensional Inspection: CMM inspection ±0.005mm accuracy, precision measuring instruments, surface finish verification, full inspection reports available.
Engineering and Technical Support
Application Engineering: Material selection guidance based on service conditions, design optimization for castability and performance, finite element analysis (FEA) for stress analysis, corrosion assessment and life prediction. Custom Development: Reverse engineering from samples or drawings, prototype casting and testing, design iteration support, proprietary designs with confidentiality agreements. Testing Services: Mechanical property testing, corrosion testing, metallurgical analysis, failure analysis, third-party laboratory coordination.
Competitive Global Pricing
Cost Advantage: 30-40% savings versus European and North American foundries, competitive with Asian sources offering superior quality control and certifications, transparent pricing with detailed cost breakdown. Volume Pricing: 10-100 pieces: baseline pricing, 100-1,000: 15-20% discount, 1,000-10,000: 20-30%, >10,000: 30-40%, blanket orders: additional 5-10%. Value Engineering: Design optimization reducing casting costs while maintaining performance, material optimization, manufacturing efficiency improvements.
Global Logistics and Service
Worldwide Export: North America (30%), Europe (25%), Asia-Pacific (20%), Middle East (15%), other (10%), established relationships with marine, offshore, industrial customers. Shipping Options: Air freight urgent deliveries 5-7 days, sea freight standard 25-40 days major ports, consolidated shipments for mixed orders. Documentation: Material certificates per ASTM, test reports, dimensional inspection reports, classification society certificates where applicable, REACH/RoHS compliance declarations. Lead Times: Prototype castings 4-6 weeks, production castings 6-10 weeks depending on complexity and volume, machined components add 2-4 weeks. On-Time Performance: 98% on-time delivery over 5 years.
Frequently Asked Questions
Q1: What is aluminum bronze and why is it superior for marine applications? Aluminum bronze is copper-aluminum alloy (5-11% Al) with iron, nickel additions providing exceptional combination of strength and corrosion resistance. Key advantages: Tensile strength 620-790 MPa (2-3× stronger than tin bronze, brass), seawater corrosion rate <0.005 mm/year (10× better than carbon steel), 40-60 year service life documented in continuous seawater, superior cavitation resistance for pump impellers, immune to dezincification unlike brass. Essential for marine propellers, pump impellers, valve bodies, propeller shaft bearings requiring both strength and corrosion resistance. Initial cost 40-60% more than tin bronze but lifecycle cost much lower.
Q2: Which aluminum bronze alloy should I select for my application? C95400: Most common, 85% Cu, 11% Al, 4% Fe, tensile 620 MPa, excellent general marine/industrial, most economical, pump impellers, valves, gears, propellers. C95500: 81% Cu, 11% Al, 4% Fe, 4% Ni, tensile 655 MPa, superior corrosion resistance, enhanced properties, critical marine applications, offshore equipment, premium +15-20%. C95800: 79% Cu, 9% Al, 5% Fe, 5% Ni, tensile 690 MPa, maximum corrosion resistance, best for extreme marine environments, subsea equipment, naval vessels, premium +25-35%. C95200: 88% Cu, 9% Al, 3% Fe, balanced properties, structural applications, gears, bearings, +10-15%. Consult our engineers with application details.
Q3: What are typical lead times and minimum order quantities for aluminum bronze castings? Prototype/Small Batch: 4-6 weeks for sand cast or investment cast prototypes, MOQ 1-10 pieces depending on size and complexity, includes pattern making, casting, heat treatment. Production Castings: 6-10 weeks for initial production depending on complexity and volume, MOQ 10-100 pieces based on size (larger castings lower MOQ), includes tooling, casting, heat treatment, basic machining. Machined Components: Add 2-4 weeks for CNC machining operations, MOQ 25-200 pieces. Large Volume: 8-12 weeks for orders >1,000 pieces with optimized production setup, volume discounts 20-40%, blanket orders with scheduled releases available.
Q4: Can aluminum bronze castings be welded and repaired? Yes, aluminum bronze C95800 offers excellent weldability for repairs and fabrication. Welding procedure: preheat 150-200°C, use aluminum bronze filler metal (ERCuAl-A2 or similar), inter-pass temperature <300°C, post-weld stress relief 275°C for 1-2 hours. C95400 and C95500 weldable with proper procedures but more difficult than C95800. Repair welding extends service life of expensive components like large pump casings, valve bodies, propellers, reducing replacement costs. We provide welding procedure specifications (WPS) and support welding operations. Alternative repair: bronze welding overlay for wear surfaces.
Q5: What quality certifications and material traceability do you provide? We provide complete material traceability and certifications: Material certificates per ASTM B148 showing chemical composition, mechanical properties (tensile, yield, elongation, hardness), heat treatment details, heat number traceability from raw material through finished casting. Test reports including tensile test results, hardness test results, NDT reports (X-ray, UT, PT as specified). Dimensional inspection reports with actual measurements versus drawings. Heat treatment certification documenting time-temperature cycles. Third-party testing available from independent laboratories for critical applications. Classification society certificates (ABS, Lloyd’s, DNV-GL) for marine applications where required. All documentation includes heat numbers enabling complete traceability.
Contact Us Today – Request Quote for Aluminum Bronze Castings
Ready to discuss your aluminum bronze casting requirements for marine propellers, pump impellers, valve bodies, gears, bushings, wear plates, or custom components?
Request a Quote: Send drawings (PDF, DWG, STEP, IGES), specifications including aluminum bronze alloy (C95400/C95500/C95800), quantity, required heat treatment, machining requirements, NDT requirements, application details to sales@jambrass.com for detailed quotation within 48 hours.
Engineering Support: Email technical requirements for material selection guidance, design optimization for castability, corrosion assessment, mechanical property requirements.
Call Us: +91-22-43449300 / +91-22-43449323 (Monday-Saturday, 9:00 AM – 6:00 PM IST)
Office Address: 1406, 14th Floor, Dalamal Tower, Nariman Point, Mumbai – 400021, Maharashtra, India
Factory Address: Plot 10B, GIDC Industrial Estate, Shanker Tekari, Udyognagar, Jamnagar, Gujarat, India – 361004
Contact Person: Mr. Mehul Vora
Email: sales@jambrass.com
