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METALCO supplies copper, brass, and bronze semi-finished products for OEMs and distributors worldwide — with documented quality, export packing, and technical support you can rely on.

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Ab2 Nickel Aluminium Bronze Hollow Bar

Nickel Aluminium Bronze Hollow Rods / Ab2 Nickel Aluminium Bronze Hollow Bar

AB2 Nickel Aluminium Bronze Hollow Bars are premium copper alloy tubes engineered for high-strength, wear-resistant, and corrosion-resistant applications. They provide excellent durability, outstanding load-bearing capacity, and superior resistance to seawater and harsh environments, making them ideal for bushings, bearings, marine hardware, valve components, pumps, and heavy-duty industrial machinery.

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Description
Chemical Composition
Physical Properties
Sizes Available

CW307G (AMS 4640) Nickel Aluminum Bronze alloy is an excellent choice for applications involving heavy loads, abrasive wear resistant, friction, abrasive wear and corrosion. The addition of nickel increases the alloys strength without diminishing its excellent ductility, toughness and corrosion resistance. Typical applications include aircraft landing gear components, strut bearings, main pistons, trunnion bearings and similar vital components.

Typical Applications:

Industrial: Hydraulic Bushings for Earth Moving Equipment, Corrosion Resistant Articles, Bushings, Bearings, Heat Exchanger Flanges, Heat Exchanger Headers, Tanks, Valve Balls, Structural Members, Pump Shafts, Aircraft Parts, Valve Guides, Plunger Tips, Welded Piping Systems, Balls, Gears, Cams, Pump Parts, Shafting, Condenser Tube for Power Stations and Desalting Units, Valve Seats
Marine: Pump Parts, Bolts, Nuts, Propellers, Ship Propellers
Plumbing: Faucets

Equivalent Specifications

SPECIFICATIONS	DESIGNATION
ISO	CuAl0Ni5Fe4
European	CuAl0Ni5Fe4
BS	CA 104
JIS	C 6301
Russian	BrAZN10.4.4

Chemical Composition

	Al	Cu	Fe	Mn	Ni	Si	Sn	Zn
Min/Max	9.0 - 11.0	Rem	2.0 - 4.0	1.5	4.0 - 5.5	0.25	0.2	0.3
Nominals	10.0000	82.0000	3.0000	-	5.0000	-	-	-

Physical Properties

End Product	Specification
Bar	AMS 4640, ASME SB150, ASTM B150, FEDERAL QQ-C-450, SAE J463, J461
Bar, Forging	ASTM B124
Bolts	ASTM F468
Forgins, Die	AMS 4640, ASTM B283, MILITARY MIL-B-16166
Nuts	ASTM F467
Plate	ASTM B171, FEDERAL QQ-C-450
Plate, Condenser Tube	ASME SB171, ASTM B171
Rod	AMS 4640, ASME SB150, ASTM B150, SAE J463, J461
Rod, Forging	ASTM B124
Screws	ASTM F468
Shapes	AMS 4640, ASTM B150, SAE J463, J461
Shapes, Forging	ASTM B124
Sheet	FEDERAL QQ-C-450
Strip	FEDERAL QQ-C-450
Tube	AMS 4640

Fabrication

Joining Technique	Suitability
Brazing	Fair
Butt Weld	Good
Capacity for Being Cold Worked	Poor
Capacity for Being Hot Formed	Good
Coated Metal Arc Welding	Good
Forgeability Rating	75
Gas Sheilded Arc Welding	Good
Machinability rating	30
Oxyacetylene Welding	Not recommended
Seam Weld	Good
Soldering	Not recommended
Spot Weld	Good

Physical Properties

Product Property	US Customary	Metric
Coefficient of Thermal Expansion	9.0 10−6Per °F (68-572 F)	16.2 Â· 10 6? per Â°C (20-300 C)
Density	0.274 lb/in3 @ 68 F	7.58 gm/cm3 @ 20 C
Electrical Conductivity	7 %IACS @ 68 F	0.041 MegaSiemens/cm @ 20 C
Electrical Resistivity	116.0 ohms-cmil/ft @ 68 F	19.28 microhm-cm @ 20 C
Melting Point Liquid US	1930 F	1054 C
Melting Point Solid US	1895 F	1035 C
Modulas of Elasticity in Tension	17500 ksi	121000 MPa
Modulas of Rigidity	6400 ksi	44130 MPa
Specific Gravity	7.58	7.58
Specific Heat Capacity	0.09 Btu/lb/Â°F @ 68 F	377.1 J/kg Â· Â°K at 293 K
Thermal Conductivity	22.6 Btu Â· ft/(hr Â· ft2 Â·Â°F) @ 68 F	39.1 W/m Â· Â°K at 20 C