Copper and Copper Alloys - Phosphor & Leaded Bronze - BSB23 / DTD197

BSB23 / DTD197

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 to 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.

BSB23 is typically used in:
~ Valve and pump components
~ Marine equipment
~ Fasteners
~ Engine components
~ High temperature applications

Chemical Composition


Chemical Element % Present
Iron (Fe) 4.70 max
Aluminium (Al) 10.00 - 11.00
Manganese (Mn) 0.0 - 0.30
Nickel (Ni) 4.90 max
Copper (Cu) Balance


Physical PropertyValue
Density 7.6 g/cm³
Melting Point 1060-1075 °C
Thermal Conductivity 46 W/m.K
Electrical Resistivity 0.216 x10^-6 Ω .m

Spec: EN 12163:2011

Rod & Bar - 10mm to 120mm Dia / AF

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

Alloy Designations

BSB23 / DTD197





DIN 17665 / 17672 CuAl10Ni5Fe4

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Last Datasheet Revision

22 July 2016


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 & 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.