C95500 Aluminum Bronze Casting, CDA 955 Bronze Casting
Cable Glands India is a specialist C95500 aluminum bronze casting manufacturer, foundry and exporter based in Jamnagar, Gujarat, India, supplying CDA 955 bronze castings to buyers in the United Kingdom, United States, Europe, Australia and Canada. C95500 — also written as CDA 955, alloy 9D, or nickel aluminium bronze CuAl10Fe5Ni5 — is the high‑strength, seawater‑durable workhorse of the aluminium bronze family, and we cast it to ASTM B148, ASTM B505 and ASTM B271 in as‑cast (M01) and heat‑treated (TQ50) tempers.
We supply C95500 castings as sand cast, shell moulded, gravity die cast, centrifugally cast and investment cast components, rough machined or fully finished to customer drawing, with EN 10204 3.1 material test certificates as standard.
C95500 / CDA 955 Bronze Casting Price
Price: US$ 16.70 per Kg (FOB Mundra / Nhava Sheva, India)
- Alloy: C95500 | CDA 955 | Nickel Aluminium Bronze (NAB)
- Unit price: US$ 16.70/Kg
- Minimum order quantity: 50 Kg (lower quantities quoted on request)
- Payment terms: T/T, L/C at sight
- Incoterms: FOB, CIF, CFR, DAP — UK, USA, EU, Australia and Canada ports
- Lead time: 2–4 weeks for standard castings; tooling 7–15 days
Indicative price for plain as‑cast components. Final pricing depends on casting weight, pattern/tooling, machining scope, heat treatment, NDT requirements and prevailing LME copper and nickel rates. Send your drawing for a firm quotation.
What Is C95500 Aluminum Bronze?
C95500 is a cast nickel aluminium bronze (NAB) containing nominally 81% copper, 11% aluminium, 4% iron and 4% nickel. The aluminium forms a tenacious, self‑healing alumina (Al2O3) surface film that gives the alloy its outstanding resistance to seawater, brine, mildly acidic media and cavitation. The iron refines grain structure and raises strength; the nickel content of 3.0–5.5% is metallurgically critical, because it stabilises the microstructure and suppresses the continuous eutectoid β phase that causes dealuminification (selective phase corrosion) in lower‑grade aluminium bronzes.
The result is a copper alloy with the tensile strength of a medium‑carbon steel, the seawater life of a nickel alloy, and the non‑sparking, non‑magnetic and antimicrobial behaviour of copper. In heat‑treated TQ50 condition, C95500 castings reach 760 N/mm² (110 ksi) tensile strength — the highest of any commonly cast copper alloy.
Key Properties of C95500 / CDA 955 Castings
- Very high tensile and yield strength — up to 760 N/mm² (110 ksi) after heat treatment
- Excellent resistance to seawater, chloride and brackish water corrosion
- Superior cavitation and erosion‑corrosion resistance in high‑velocity flow
- Excellent galling, wear and abrasion resistance under heavy load
- High resistance to dealuminification thanks to 3–5.5% nickel
- Non‑sparking — suitable for ATEX / Zone 1 and Zone 2 hazardous areas
- Essentially non‑magnetic (low magnetic permeability, typically < 1.05 μ)
- Retains useful mechanical strength up to approximately 400 °C
- Good weldability with ERCuNiAl / AWS A5.7 filler and good machinability (rating ~50)
- Excellent fatigue and impact resistance, including at sub‑zero temperatures
C95500 Chemical Composition (ASTM B148 / ASTM B505)
| Element | Symbol | Composition (% by weight) |
|---|---|---|
| Copper | Cu | 78.0 min. |
| Aluminium | Al | 10.0 – 11.5 |
| Iron | Fe | 3.0 – 5.0 |
| Nickel (incl. Cobalt) | Ni + Co | 3.0 – 5.5 |
| Manganese | Mn | 3.5 max. |
Copper plus the sum of the named elements shall be 99.5% minimum. Every heat is verified on a calibrated optical emission spectrometer before pouring, and the ladle analysis is reported on the material test certificate.
C95500 Mechanical Properties
| Property | As‑Cast (M01) | Heat Treated (TQ50) |
|---|---|---|
| Tensile strength (min.) | 620 N/mm² (90 ksi) | 760 N/mm² (110 ksi) |
| Yield strength, 0.5% ext. (min.) | 275 N/mm² (40 ksi) | 380 N/mm² (55 ksi) |
| Elongation in 50 mm (min.) | 6% | 5% |
| Brinell hardness (3000 kg) | 170 – 200 HB | 200 – 230 HB |
| Modulus of elasticity | 110,000 – 120,000 N/mm² (16–17 × 106 psi) | |
| Shear modulus | approx. 44,000 N/mm² | |
| Poisson’s ratio | 0.32 – 0.34 | |
| Machinability rating (free‑cutting brass = 100) | 50 | |
Values are typical minimum specification requirements. Actual test results are reported per heat on the test certificate; separately cast or integrally cast test bars can be supplied on request.
C95500 Physical & Thermal Properties
| Property | Metric | Imperial |
|---|---|---|
| Density at 20 °C | 7.53 g/cm³ | 0.272 lb/in³ |
| Melting point — liquidus | 1054 °C | 1930 °F |
| Melting point — solidus | 1038 °C | 1900 °F |
| Thermal conductivity at 20 °C | 41.9 W/m·K | 24.2 Btu/ft·h·°F |
| Coefficient of thermal expansion | 16.2 × 10-6/K (20–300 °C) | 9.0 × 10-6/°F (68–572 °F) |
| Electrical conductivity | approx. 4.6 MS/m | 8% IACS |
| Specific heat capacity | 450 J/kg·K | 0.11 Btu/lb·°F |
| Magnetic permeability | Low — typically < 1.05 μ (essentially non‑magnetic) | |
C95500 International Equivalent Grades
| Standard / Region | Designation |
|---|---|
| UNS / CDA (USA) | C95500 / CDA 955 |
| ASTM (USA) | ASTM B148 Alloy 9D, ASTM B505/B505M, ASTM B271, ASTM B763 |
| US Federal / Military | QQ‑C‑390 Alloy G3, MIL‑B‑16033 Class 4, MIL‑C‑15345 Alloy 14 |
| SAE (USA) | SAE J461 / J462 |
| BS 1400 (UK) | AB2 (nearest equivalent) |
| EN 1982 (Europe) | CC333G — CuAl10Fe5Ni5‑C |
| DIN (Germany) | G‑CuAl10Ni, CuAl10Ni5Fe4, W.-Nr. 2.0975 |
| ISO 1338 | CuAl10Fe5Ni5‑C |
| JIS H5120 (Japan) | CAC703 (AlBC3) |
| GB/T 1176 (China) | ZCuAl10Fe5Ni5 |
| AFNOR (France) | CuAl10Fe5Ni5‑C |
| IS 305 (India) | AB2 |
| Trade names | Alloy 9D, Nickel Aluminium Bronze, NAB, 81‑4‑4‑11 |
Note: cross‑reference grades are nearest equivalents only. Chemical and mechanical limits differ between standards and revisions — always confirm the governing specification on your drawing before ordering.
C95500 vs C95400 vs C95800 — Which Aluminium Bronze Should You Specify?
| Criterion | C95400 | C95500 (CDA 955) | C95800 |
|---|---|---|---|
| Nominal composition | Cu‑11Al‑4Fe | Cu‑11Al‑4Fe‑4Ni | Cu‑9Al‑4Fe‑4Ni‑1Mn |
| Nickel content | 1.5% max. | 3.0 – 5.5% | 4.0 – 5.0% |
| Tensile strength (min., as‑cast) | 515 N/mm² | 620 N/mm² | 585 N/mm² |
| Typical hardness | 150–170 HB | 170–230 HB | 159 HB |
| Seawater service | Moderate | Very good | Excellent (marine grade) |
| Dealuminification resistance | Limited | High | Highest |
| Best suited to | General engineering, gears, bushes | Heavy‑duty bearings, wear parts, high‑load marine and defence components | Propellers, pump/valve bodies, permanently submerged hardware |
In short: choose C95500 when the governing requirement is strength, hardness and load capacity combined with good seawater resistance. Choose C95800 when the part is permanently submerged and long‑term seawater corrosion resistance dominates. Compare all aluminium bronze casting grades →
Heat Treatment of C95500 (TQ50 Temper)
C95500 responds strongly to heat treatment, unlike most cast copper alloys. Our standard TQ50 cycle is:
- Solution anneal: heat to 860–900 °C, soak according to section thickness (typically 1 hour per 25 mm)
- Quench: rapid water quench to develop the hardened martensitic β′ structure
- Temper: re‑heat to 550–650 °C and hold, then air cool, to restore ductility and toughness
The TQ50 cycle raises tensile strength from 620 to 760 N/mm² and hardness from ~180 to ~220 HB while retaining 5% minimum elongation. A stress‑relief anneal at 550–600 °C is also available for weld‑repaired or heavily machined castings, and is strongly recommended for components destined for long‑term seawater immersion.
Casting Processes for C95500 Bronze Components
Sand Casting
Green sand and no‑bake (furan) resin sand moulding for one‑offs through to production runs, and for large or complex geometries such as pump casings, valve bodies, stern gear and structural marine hardware. Casting weights from 0.1 kg to 1500 kg.
Centrifugal Casting
Horizontal and vertical centrifugal casting produces exceptionally dense, porosity‑free, directionally solidified cylindrical C95500 parts — bushings, sleeves, wear rings, bearing shells, worm wheel blanks and slide rings — where hydrostatic integrity and fatigue life are critical.
Gravity Die Casting (Permanent Mould)
For repeat production of medium‑volume CDA 955 parts. Faster solidification gives finer grain structure, better as‑cast mechanical properties, tighter dimensional repeatability and reduced machining allowance.
Shell Moulding & Investment Casting
For near‑net‑shape precision components with fine detail, thin sections, superior surface finish (Ra 3.2–6.3 µm as‑cast) and minimal secondary machining.
Machining, Welding & Fabrication Guidance
- Machinability: rating 50 (free‑cutting brass = 100). Use rigid setups, positive rake carbide tooling (K10/K20), moderate speeds and generous coolant; C95500 work‑hardens if dwelled or rubbed.
- Welding: GTAW (TIG) and GMAW (MIG) with AWS A5.7 ERCuNiAl‑A2 / ERCuAl‑A2 filler. Preheat 150–200 °C for heavy sections, control interpass temperature, and stress‑relieve after welding.
- Brazing: not recommended — the stable alumina film inhibits wetting.
- Galvanic compatibility: C95500 sits close to 316 stainless and Monel in the seawater galvanic series and is generally compatible; isolate from aluminium, zinc and carbon steel in wetted assemblies.
- Surface finishes: as‑cast, shot‑blasted, pickled, polished, or machined to drawing tolerance.
Applications of C95500 / CDA 955 Bronze Castings
Marine & Offshore
Propeller hubs and blades, rudder and stern tube bushings, pintle bearings, stern gear, seawater pump impellers and wear rings, valve seats, thruster components, hull fittings and subsea connectors.
Oil, Gas & Petrochemical
Non‑sparking valve internals, wellhead components, choke bodies, drilling wear pads, riser bushings, ATEX‑compliant tools and fittings for hazardous areas.
Heavy Engineering & Power
Heavy‑duty bushings and bearings, worm wheels and worm gears, gear blanks, forming and form rolls, press liners, slide plates, gib strips, hydraulic turbine wear rings and desalination plant components.
Aerospace & Defence
Landing gear bushings, actuator components, airframe wear bushings, naval fittings and ordnance components to QQ‑C‑390 and MIL‑B‑16033.
Pumps, Valves & Fluid Handling
Impellers, casing wear rings, throat bushings, shaft sleeves, valve bodies and discs, mechanical seal parts, and stuffing box components in seawater and brine service.
Manufacturing & Supply Capability
- Casting weight range: 0.05 kg to 1500 kg per piece
- Tolerances: ISO 8062 CT8–CT12 as‑cast; machined to ±0.02 mm where required
- Supply condition: as‑cast, rough machined, semi‑finished or fully finished to drawing
- Tooling: in‑house wood, resin and aluminium pattern shop; CAD/CAM and solidification simulation
- Order quantity: prototypes and single pieces through to high‑volume series
- Reverse engineering: castings reproduced from samples, sketches or 3D scans
Quality Assurance, Testing & Certification
- Optical emission spectrometer (OES) chemical analysis on every heat
- Tensile, yield, elongation and Brinell hardness testing per ASTM B148 / B505
- Dye penetrant inspection (DPI), radiography (RT) and ultrasonic testing (UT) on request
- Hydrostatic and pneumatic pressure testing for pressure‑retaining castings
- Metallographic examination for microstructure and phase distribution
- Positive material identification (PMI) and dimensional/CMM inspection reports
- EN 10204 3.1 material test certificates as standard; 3.2 third‑party certification (Lloyd’s, DNV, BV, ABS, TUV, SGS) on request
- RoHS and REACH declarations available for European customers
Export Packing & Worldwide Delivery
C95500 castings are supplied VCI‑wrapped and packed in ISPM‑15 compliant fumigated wooden crates or seaworthy pallets, with machined faces protected against transit damage and marine corrosion. We ship regularly from Mundra and Nhava Sheva to:
- United Kingdom — Felixstowe, Southampton, London Gateway, Liverpool
- United States — New York, Houston, Los Angeles, Savannah, Norfolk
- Europe — Rotterdam, Hamburg, Antwerp, Genoa, Le Havre, Gdansk
- Australia — Sydney, Melbourne, Brisbane, Fremantle
- Canada — Montreal, Vancouver, Halifax, Toronto
Air freight and express courier are available for urgent breakdown spares and prototypes.
Why Buy C95500 Aluminum Bronze Castings from Cable Glands India
- Dedicated non‑ferrous foundry in Jamnagar — India’s largest brass and bronze manufacturing cluster
- Deep specialisation in nickel aluminium bronze, not a general job shop
- Tight metallurgical control — nickel and aluminium held to the middle of the specification band for repeatable properties
- In‑house pattern making, melting, heat treatment, machining and testing under one roof
- Full traceability from ingot to finished casting
- Competitive Indian foundry pricing with export documentation handled end to end
- Engineering support on alloy selection, casting design, gating and machining allowance
- Established export track record across the UK, USA, Europe, Australia and Canada
Frequently Asked Questions About C95500 Aluminum Bronze Casting
What is the price of C95500 aluminum bronze casting?
Our indicative price for C95500 / CDA 955 bronze castings is US$ 16.70 per Kg, FOB India, for plain as‑cast components. Final pricing depends on casting weight, tooling, machining scope, heat treatment and testing requirements, and on prevailing LME copper and nickel prices.
What is the difference between C95500 and C95800?
Both are nickel aluminium bronzes. C95500 contains about 11% aluminium and is optimised for strength and hardness, reaching 760 N/mm² tensile after TQ50 heat treatment. C95800 contains about 9% aluminium plus manganese and is the dedicated marine grade, offering the best long‑term resistance to seawater corrosion and dealuminification. Specify C95500 for heavily loaded bearings and wear parts; C95800 for permanently submerged propellers, pump casings and valve bodies.
Is C95500 the same as CDA 955?
Yes. CDA 955 is the Copper Development Association designation for the same alloy identified as UNS C95500. It is also known as ASTM B148 Alloy 9D, nickel aluminium bronze, NAB, and by the nominal composition shorthand 81‑4‑4‑11.
Is C95500 aluminum bronze non‑sparking?
Yes. Like other copper‑based aluminium bronzes, C95500 is classed as non‑sparking and is widely used for tools, fittings and valve components in ATEX and hazardous‑area installations in oil, gas and petrochemical plants.
Can C95500 castings be welded?
Yes. C95500 has good weldability using GTAW or GMAW with AWS A5.7 ERCuNiAl‑A2 or ERCuAl‑A2 filler metal. Preheat of 150–200 °C is recommended for heavy sections, and a post‑weld stress relief at 550–600 °C should follow, particularly for seawater service. Brazing is not recommended.
What are the ASTM standards for C95500 castings?
C95500 castings are covered by ASTM B148 (aluminium bronze sand castings), ASTM B505/B505M (continuous castings), ASTM B271 (centrifugal castings) and ASTM B763 (valve castings), along with SAE J461/J462, QQ‑C‑390 Alloy G3 and MIL‑B‑16033 Class 4.
Does C95500 resist seawater corrosion?
Yes. The protective alumina film gives excellent resistance to seawater, brackish water and brine, and the 3–5.5% nickel content suppresses the microstructural conditions that lead to dealuminification. It also performs very well against cavitation and erosion‑corrosion in high‑velocity flow, which is why it is used for impellers, wear rings and propeller components.
What is the minimum order quantity, and can you work to our drawing?
Our standard minimum order quantity is 50 Kg, with smaller quantities and single prototype castings quoted on request. We manufacture entirely to customer drawings, samples or 3D models, including full reverse engineering of obsolete parts.
Do you supply material test certificates?
Yes. EN 10204 3.1 certificates covering chemical composition and mechanical test results are supplied as standard with every consignment. Third‑party 3.2 certification through Lloyd’s Register, DNV, Bureau Veritas, ABS, TUV or SGS can be arranged.
Which countries do you export C95500 castings to?
We regularly export C95500 and CDA 955 bronze castings to the United Kingdom, United States, Germany, Netherlands, Italy, France, Spain, Poland, Australia, New Zealand and Canada, as well as the Middle East and Africa.
Related Aluminium Bronze Casting Grades
- Aluminum Bronze Casting — All Grades & Foundry Capability
- C95800 Aluminum Bronze Casting — Marine Grade NAB
- C95400 Aluminum Bronze Casting — General Engineering Grade
- C95200 Aluminum Bronze Casting
- C95900 High Strength Aluminum Bronze Casting
- CuAl10Fe5Ni5 / CC333G Bronze Casting
- BS 1400 AB2 Aluminium Bronze Casting
- Centrifugal Cast Nickel Aluminium Bronze Bushings
- Nickel Aluminium Bronze Propeller Castings
- Bronze Pump & Valve Component Castings
Request a Quotation for C95500 Aluminum Bronze Castings
Need C95500 / CDA 955 bronze castings delivered to the UK, USA, Europe, Australia or Canada? Cable Glands India casts, heat treats, machines, tests and exports nickel aluminium bronze components to your exact drawing — from a single prototype to full production series, at US$ 16.70 per Kg.
Send us your drawing or sample along with the alloy grade, temper (as‑cast or TQ50), quantity, machining requirements and application. Our metallurgists will confirm alloy suitability and return a firm, competitive quotation — usually within 24 hours.
▶ Get Your C95500 Casting Quote Now
Email: sales@cableglandsindia.com | Phone: +91 22 4344 9300
Cable Glands India — C95500 aluminum bronze casting manufacturer, CDA 955 bronze casting foundry and exporter, Jamnagar, Gujarat, India.