CW307G Aluminium Bronze (CuAl10Ni5Fe4) is a high-strength nickel aluminium bronze alloy widely used in demanding engineering applications where exceptional wear resistance, corrosion performance and mechanical strength are required. Known for its ability to withstand heavy loads, shock and abrasive conditions, CW307G is commonly specified across aerospace, marine, power generation and industrial sectors. The addition of aluminium, nickel and iron enhances both strength and durability, while maintaining good toughness and resistance to seawater corrosion, making it an ideal choice for components such as bearings, bushings, valves and pump parts operating in harsh environments.

CW307G (CuAl10Ni5Fe4) is closely equivalent to CA104 and UNS C63000, with similar mechanical properties and corrosion resistance. It belongs to the nickel aluminium bronze family, alongside alloys such as C63200 and C95500, which may be selected depending on specific strength, casting or wear requirements. For less demanding applications, general aluminium bronzes like C95400 can provide a cost-effective alternative.

Equivalent Specifications

BS EN 12420 1999 CW 307G
BS EN 12163 2011 CW 307G
BS EN 12165 1998 CW 307G
BS EN 12167 1998 CW 307G
BS EN 1653 1998 CW 307G
DIN 17665 1983 2.0966
DIN 17672 1983 2.0966
DIN 17678 1983 2.0966
NFL 14705
NFA 51-116
ISO 428 et 1338
BS B23 1991
DTD 197A
AMS 4640
ASTM B 150 03 C63000
ASTM B 124 03 C63000
ASTM B 171 1999 C63000
SAE J463 CA630
CuAL10NI5Fe3
GAM MM11 C
MIL B 16166B
MIL B 24059 Rev 3
QQ C 465B C63000
Def Stan 02 833
NES 833
BS 2874 CA104

Key Features

One of the most popular complex Nickel Aluminium Bronzes. The alloy has excellent wear, fatigue and corrosion resistance with high mechanical properties. The alloy is widely used in aerospace and marine application.

Typical Uses

Industrial: Plunger Tips, Corrosion Resistant Articles, Hydraulic Bushings for Earth Moving Equipment, Valve Balls, Bushings

Power: Condenser Tube for Power Stations and Desalination Units, Shafting, Pump Parts, Cams, Gears, Heat Exchanger Flanges, Heat Exchanger, Headers, Tanks, Welded Piping Systems

Aerospace: Landing gear bushes and bearings, wing flap bearing

Automotive: Valve guides and seats

Marine: Nuts, Ship Propellers, Pump Parts, Bolts, impellers, valves and valve stems

Description Nickel Aluminium Bronze
Nominal Composition CuAl10Ni5Fe4
Alloy Type wrought

Typical Mechanical Properties

Tensile Strength (N/mm²) 640
Proof/Yield Strength (N/mm²) 270
Elongation (%) 15
Hardness Brinell 180
Impact Izod J20°C 23

Typical Physical Properties

Density g/cm³ 7.58
Melting Temperature Range °C 1060 - 1075
Thermal Conductivity W/mK 38
Electrical Resistivity μΩ.m15°C 22
Coefficient of Thermal Expansion 0-250°C 40
Relative Magnetic Permeability 1.5
Coefficient of Friction 0.46

Copper Alloys has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys’s technical team on +44 (0) 1782-816888, or email [email protected].

Contact

UK +44 (0) 1782 816888 | US +1 17577921977

[email protected]

Auckland Street, Stoke-on-Trent, ST6 2AZ, United Kingdom

Copper Alloys
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