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Copper Alloys dealers in UAE

C63200 / CuAl10Ni5Fe4 / CW307G

C63200 (CuAl10Ni5Fe4, CW307G) — premium nickel aluminium bronze with outstanding seawater corrosion resistance, cavitation resistance, and biofouling resistance. Supplied per ASTM B150, AMS 4880, and MIL-B-24059 for marine, offshore, and naval applications.

Industries Served

Marine
Oil & Gas
Petrochemical
Desalination
Power Generation
Aerospace & Defense
Heavy Engineering

Applications

  • Propeller shafts, stern tube liners, and rudder components for offshore vessels, tugs, and naval ships in UAE and GCC ports
  • Seawater pump casings, impellers, and wear rings for desalination plants, offshore platforms, and marine cooling systems in UAE
  • Subsea valve bodies, gate valve seats, and wellhead components in offshore oil & gas production requiring seawater and H2S resistance
  • Bearing bushings, journal bearings, and thrust washers in marine propulsion equipment - excellent lubricity and wear resistance
  • Hollow bar for hydraulic cylinder liners and pump sleeves - reduces machining waste vs solid bar for large-bore components
  • Naval defence components including propeller hubs, shaft couplings, and marine fittings per MIL-B-24059 / AMS 4880
  • Desalination plant brine pump shafts, evaporator tube sheets, and heat exchanger components in UAE MSF and RO facilities
  • Fire pump casings and seawater firefighting system components for offshore platforms and FPSOs in the Arabian Gulf
  • Ring forgings for flanges, seal housings, and pressure-retaining components in subsea and topsides oil & gas equipment
  • Tidal turbine hubs and offshore renewable energy structural elements requiring cavitation and biofouling resistance

Chemical Composition

Cu

Copper

9 %
Al

Aluminium

8.7 – 9.5 %

4.5 %
Ni

Nickel

4 – 5 %

4 %
Fe

Iron

3.5 – 4.5 %

1.5 %
Mn

Manganese

1.2 – 2 %

Si

Silicon

≤ 0.1 %

Pb

Lead

≤ 0.02 %

Zn

Zinc

≤ 0.5 %

Sn

Tin

≤ 0.2 %

Typical value Range (min–max) Minimum (≥) Maximum (≤) Hover / tap for notes

Standard

ASTM B150 / B150M - current edition

Available Forms

Round Bar

Diameter 10-500 mm. Extruded and drawn; larger diameters typically from continuous cast or forged bar. Per ASTM B150 / AMS 4880 / MIL-B-24059. For propeller shafts, pump shafts, valve stems, and bearing journals in marine and oil & gas applications.

Flat Bar

Thickness 10-100 mm, width up to 300 mm. Rolled or extruded. For wear plates, marine hardware, bushing stock, and structural components.

Plate

Thickness 10-250 mm. Hot-rolled or continuous cast. For flanges, bearing pads, seal rings, and large-section components. Cut-to-size available.

Block

Thickness 10-250 mm. Hot-rolled or continuous cast. For flanges, bearing pads, seal rings, and large-section components. Cut-to-size available.

Forging

Open-die forgings per ASTM B124 (forging rod/bar). For propeller hubs, bearing housings, pump casings, valve bodies, and subsea connector components. All sizes on request. Lead times apply.

Ring Forging

Seamless ring forgings per ASTM B124, OD 50-1500 mm. For flanges, seal housings, and pressure-retaining components in subsea and topsides oil & gas equipment. All sizes on request. Lead times apply.

Hollow Bar

Extruded hollow bar. OD 50-400 mm, various wall thicknesses and bore sizes. For large bearing bushings, hydraulic cylinder liners, and pump sleeves - eliminates central machining waste versus solid bar. Specify OD x ID x length. Available on request.

Designations & Equivalents

StandardDesignationNotes
UNSC63200—
EN NameCuAl10Ni5Fe4EN compositional designation (wrought).
EN / WerkstoffCW307GEN numeric code for the wrought form.
EN / WerkstoffCC333GEN casting designation.
BSAB2Naval Aluminium Bronze (BS designation).
ASTMB150 Alloy C63200Bar / rod specification.
ASTMB505 / B271Casting alloys.
ASTMB124Forging rod and bar.
AMSAMS 4880C63200 bar and rod - aerospace / naval procurement reference.
Common NameMIL-B-24059C63200 rod, bar, and shapes - US Navy / defence procurement reference (military specification; no exact enum system).
ISOISO 428 CuAl10Ni5Fe4—
Common NameNickel Aluminium Bronze (NAB)—
Common NameNaval Aluminium BronzeVariant common name.

Compliance & Certification

StandardStatusNotes
EN 10204 3.1SuitableMill Test Certificate provided as standard with all supply.
EN 10204 3.2ConditionalIndependent third-party inspection certificate available on request.
NACE MR0175 / ISO 15156Requires ConfirmationApplicable for applicable component categories - verify application and confirm hardness at order stage.
ABS (American Bureau of Shipping)ConditionalMarine certification available from approved mill sources - specify at enquiry stage with class society and vessel details.
DNV-GLConditionalMarine / offshore certification available from approved mill sources - specify at enquiry stage with class society and vessel details.

Specifications

Mechanical Properties

Values are minimums unless noted; hardness is a maximum.

PropertyC63200 / CuAl10Ni5Fe4 — ASTM B150 — AnnealedDefault
Tensile Strength (UTS)min620 MPaTypical: 660 MPaCondition: Room temp, longitudinalNotes: Per ASTM B150 annealed condition. Values for wrought bar.
Yield Strength (0.2% Proof Stress)min260 MPaTypical: 310 MPaCondition: Room tempNotes: 0.2% offset. Copper alloys have relatively low yield vs UTS.
Elongationmin15 %Typical: 18 %Condition: 50 mm gauge lengthNotes: Good ductility in annealed condition.
Reduction of Areamax25 %Condition: LongitudinalNotes: [VERIFY]
Hardnessrange150–210 HBTypical: 175 HBCondition: Surface, BrinellNotes: Typical annealed range. Harder than most copper alloys due to Ni and Fe alloying.
Impact Energy (Charpy)max54 JCondition: Room temp, V-notchNotes: Good impact toughness. [VERIFY]
Fatigue Strengthmax200 MPaCondition: 10^8 cycles, R=-1Notes: Endurance limit approximation for rotating bending. [VERIFY]

Physical Properties

PropertyC63200 / CuAl10Ni5Fe4 — ASTM B150 — AnnealedDefault
Density20 degrees C7.64 g/cm3
Modulus of Elasticity25 degrees C117 GPa
Thermal Conductivity20 degrees C42 W/m·K
Coefficient of Thermal Expansion20-100 degrees C16.2 um/m·°C
Specific Heat Capacity20 degrees C420 J/kg·K
Melting Point / RangeSolidus1030 degrees C
ENGINEERING NOTES
Weldability
Fair

C63200 is weldable using TIG (GTAW) or MIG (GMAW) with matching ERCuNiAl filler wire. Preheat to 150-200 degrees C for sections above 25 mm. Post-weld annealing at 600-650 degrees C for 1-2 hours restores full corrosion resistance by eliminating aluminium oxide inclusions and homogenising the weld microstructure. Back purging with argon is required to prevent oxidation of the root bead. Always cool rapidly through the 300-500 degrees C embrittlement range during any heat treatment cycle. For dissimilar metal welding to stainless steel or carbon steel, apply a nickel-copper butter layer (ERNiCu-7 or similar) before using C63200 filler. All welding should be carried out by qualified welders with copper alloy experience. Recommended fillers: ERCuNiAl (primary TIG/MIG filler), ECuNiAl (SMAW stick electrode for positional welding and repair), and ERNiCu-7 (Alloy 60 type) buttering layer when joining to stainless or carbon steel.

Machinability
Fair

C63200 has moderate machinability - approximately 20-30% of free-machining brass machinability index. Carbide tooling recommended for production machining. Use positive rake angles, sharp cutting edges, and flood coolant. The alloy work-hardens during machining - maintain continuous chip formation and avoid dwelling. Hollow bar significantly reduces machining time for large-bore cylindrical components by eliminating the need to drill or bore from solid. For precision bearing bushings, allow for light interference fit and bore to final dimension after pressing.

Overview

C63200 (UNS C63200, EN CuAl10Ni5Fe4, CW307G) is a nickel-aluminium bronze containing approximately 9-10% aluminium, 4-5% nickel, and 3.5-4.5% iron in a copper matrix. It is the highest-specification commercial wrought aluminium bronze grade, distinguished from standard aluminium bronzes (C62300, C63000) by its balanced nickel and iron additions, which refine the microstructure, enhance corrosion resistance in seawater and reducing environments, and significantly improve cavitation resistance. C63200 exhibits outstanding resistance to seawater corrosion, dealuminification, and biofouling - performance characteristics that have made it the global default for propeller shafts, pump casings, valve components, and subsea connector housings across naval, offshore oil & gas, and desalination industries. Available per ASTM B150, AMS 4880, and MIL-B-24059 (US Navy standard), it is specified for the most demanding marine and defence applications in UAE and international procurement.

Nifty Alloys supplies C63200 / CuAl10Ni5Fe4 from stock in Dubai, UAE, in round bar, flat bar, plate/block, hollow bar, and forgings/ring forgings in the annealed condition. All material is supplied with EN 10204 3.1 Mill Test Certificates as standard - confirming chemical composition, mechanical properties, and full traceability to mill source. EN 10204 3.2 third-party inspection is available on request. ABS and DNV-GL certified material is available from our approved mill sources for marine classification projects. We deliver across the UAE within 24-48 hours and export to Saudi Arabia, Kuwait, Qatar, Oman, and Bahrain. Contact our team for same-day quotation and stock availability.

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C63200 (CuAl10Ni5Fe4) is the premium wrought nickel aluminium bronze specified wherever long-term seawater corrosion resistance, cavitation resistance, and biofouling resistance must be combined with high mechanical strength. Key applications in UAE and GCC include: propeller shafts and stern tube liners for offshore vessels and tugs in UAE ports; seawater pump casings and impellers for desalination plants and offshore platform cooling systems; subsea valve bodies and wellhead components in oil & gas production requiring seawater and H2S resistance; bearing bushings and journal bearings in marine propulsion; hydraulic cylinder liners supplied as hollow bar; naval defence components per MIL-B-24059 and AMS 4880; fire pump casings on FPSOs and offshore platforms; and ring forgings for subsea flanges. Its combination of outstanding seawater corrosion resistance, natural biofouling resistance, and cavitation erosion performance 5-10 times superior to cast iron makes it the default copper alloy for demanding marine and offshore applications globally.

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Ras Al Khor Ind. Area-2, Dubai United Arab Emirtates

+971 565450916

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