Aluminium Bronze

Datasheet
CO/Benson Works
Selinas lane, Dagenham, Essex, RM81QE
Tel: 020 8526 7010
Aluminium Bronze Fax: 020 8592 8240
Email: mike@londonbronze.co.uk
Web: www.londonbronze.co.uk
Specifications: Registered in England No. 7739931
Commercial: CA104
EN: CW307G
Bronzes are copper-based alloys with the major alloying element being Tin. They offer a combination of
properties such as high strength, hardness, corrosion resistance and wear resistance.
Copper-Aluminium alloys are commonly known as Aluminium Bronzes. These alloys cover a range of
Copper-based alloys in which the primary alloying element is up to 14% aluminium. The four major
groups of Aluminium Bronze are:
 Single phase alloys containing less than 8% Aluminium.

 Two phase (duplex) alloys containing 8-11% Aluminium. These alloys also frequently have
additions of Iron and Nickel to increase strength. This group contains casting alloys AB1 and
AB2, the wrought alloys CA105, CA104 and Defence Standard (formerly Naval Engineering
Standard NES 747 when cast and the wrought form NES 833).
 The low magnetic permeability Aluminium-Silicon alloys.
 The Copper -Manganese-Aluminium alloys with good castability.
Alloy CA104 is an Aluminium Bronze with high strength. CA104 also has excellent corrosion resistance,
abrasion resistance and ability to withstand shock loading.
Applications
CA104/CW307G is typically used in the following: valve and pump components, marine equipment,
fasteners, engine components and high temperature applications.
Alloy designations
Bronze CW307G corresponds to the following designations but may not be a direct equivalent:
UNS C63200, CA104, CuAl10Ni5Fe4.
Supplied forms
CW307G/CA104 is typically supplied in the following: round bar, square bar, flat bar, sheet and plate.
Corrosion resistance
Corrosion resistance is considered to be excellent in most environments.
Cold working
CA104/CW307G has only a fair rating for cold working.
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Datasheet Updated - 28/02/2014
Hot working
The hot forgeability rating for CA104/CW307G is quite good at 70, compared to Forging Brass which is
rated at 100. The recommended hot working temperature for this alloy is between 815-900°C. The hot
working capabilities of CA104 are considered to be good.
Heat treatment
Solution treatment or annealing can be done by rapid cooling after heating to 620-800°C.
Machineability
Bronze alloy CA104/CW307G has a fairly poor machineability rating of 30 compared to Brass
CZ121/CW614N which is rated to 100.
Weldability
Gas shielded arc welding of CA104/CW307G is rated as excellent. Coated metal arc welding, spot
welding and butt welding are rated as good. Soldering, brazing and seam welding are rated as fair.
Oxyacetylene welding is rated as fair.
General physical properties Chemical composition

Property Value EN12163:2011 CW307G
3
Density 7.58g/cm Element % Present
Melting point 1035°C Aluminium (Al) 8.50-11.00
Modulus of elasticity 115 GPa Nickel (Ni) 4.00-6.00
Thermal conductivity 37.7 W/m.K Iron (Fe) 3.00-5.00
Manganese (Mn) 0.0-1.00
Mechanical properties
Zinc (Zn) 0.0-0.40
EN12163:2011 Rod & Bar 10-120mm A/F
Others (total) 0.0-0.20
Property Value
Silicon (Si) 0.0-0.20
Proof stress 320-400 min MPa
Tin (Sn) 0.0-0.10
Tensile strength 680-740 min MPa
Lead (Pb) 0.0-0.05
Hardness Brinell 170-210 HB
Copper (Cu) balance
Elongation A 8-10% min
Mechanical properties may vary widely according to condition (soft/half hard etc)
DISCLAIMER
This data is indicative only and as such is not to be relied upon in place of the full specification. In particular mechanical property requirements vary
widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith, No liability will
be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown is
no guarantee of accuracy or whether the datasheet is up to date. The information provided in this datasheet has been drawn from various recognised
sources, including EN standards, recognised industry references (printed & online) and manufacturers' data. No guarantee is given that the
information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly
from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the
Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as
to dimensions, properties, and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is
given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current
Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those conditions; a copy of which is available on
request.
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Datasheet Updated - 28/02/2014

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Datasheet

 Single phase alloys containing less than 8% Aluminium.

Corrosion resistance is considered to be excellent in most environments.

CA104/CW307G has only a fair rating for cold working.

General physical properties Chemical composition

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