Copper Alloys, Aluminium BronzeBS B23 DTD197 Bar

A high strength aluminium bronze used in the aerospace, marine and chemical industries.

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.

BSB23 is one of the most popular grades of aluminium bronze with additions of 10% aluminium, 5% nickel and 5% iron to enhance the overall properties of the alloy.

A wrought version of the 10/5/5 aluminium bronze BS B23 is used when the commercial CA104 is deemed not fit for purpose. BS B23 is mainly used in aerospace engineering but is also used in the marine and chemical sectors due to its high strength and excellent resistance to corrosion and erosion in seawater and other aggressive environments. BS B23 is also known for its excellent shock and wear resistance whilst being able to retain its properties at cryogenic temperatures.

Range

Product Form	Imperial Sizes	Metric Sizes
Round Bar	³⁄₈" - 5 ¹⁄₂"	120mm - 130mm

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Related Specifications

BSB23/DTD197
BS2872
CA104
EN12163/5/7
CW307G
DIN 17665/17672 CuAl10Ni5Fe4
C63000
C63020
ASTM B150

Properties

Chemical Composition

Chemical Element	% Present
Aluminium (Al)	10.00 - 11.00
Manganese (Mn)	0.00 - 0.30
Copper (Cu)	Balance
Iron (Fe)	Balance
Nickel (Ni)	Balance

Mechanical Properties

Mechanical Property	Value
Proof Stress	320-600 MPa
Tensile Strength	700-850 MPa
Hardness Brinell	180-255 HB
Elongation A50 mm	12-25 %

Physical Property	Value
Density	7.6 g/cm³
Melting Point	1060-1075 °C
Thermal Conductivity	46 W/m.K
Electrical Resistivity	0.216 x 10^-6Ω .m

Applications

Valve and pump components
Marine equipment
Fasteners
Engine components
High temperature applications
Heavy duty bushes and bearings
Aerospace components

Characteristics

Excellent resistance to erosion & corrosion
High strength & toughness
Very good galling resistance
Non-sparking
Retention of mechanical properties at sub-zero temperatures
High wear resistance

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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 above 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 S 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.