+44 (0)1487 833 600
Wilsons is COVID-19 Compliant

Data Sheets

Copper and Copper Alloys

Aluminium Bronze

DEF STAN 02-838 ~ NES838 Bar

A Phosphor Bronze Alloy with high strength and very high corrosion resistance especially in sewater and marine enviroments. Mainly used in Naval Engineering, Nuclear, Aerospace and Defence Applications.

Chemical Composition

DEFSTAN 02-838(PT1)/1(2012)
Phosphor Bronze
Chemical Element % Present
Nickel (Ni) 0.0 - 0.30
Iron (Fe) 0.0 - 0.10
Tin (Sn) 4.00 - 5.50
Silicon (Si) 0.0 - 0.30
Lead (Pb) 0.0 - 0.02
Phosphorous (P) 0.02 - 0.40
Zinc (Zn) 0.0 - 0.30
Copper (Cu) Balance

Alloy Designations

DEF STAN 02-838


NES 838


Mechanical Properties

DEFSTAN 02-838(PT1)/1(2012)
Bar - 6mm to 18mm
Mechanical Property Value
Proof Stress 410 Min MPa
Tensile Strength 500 Min MPa
Elongation A 12 Min %
DEFSTAN 02-838(PT1)/1(2012)
Bar - 18mm to 40mm
Mechanical Property Value
Proof Stress 380 Min MPa
Tensile Strength 460 Min MPa
Elongation A 12 Min %
DEFSTAN 02-838(PT1)/1(2012)
Bar - 40mm to 60mm
Mechanical Property Value
Proof Stress 320 Min MPa
Tensile Strength 380 Min MPa
Elongation A 16 Min %
DEFSTAN 02-838(PT1)/1(2012)
Bar - Over 60mm
Mechanical Property Value
Proof Stress 250 Min MPa
Tensile Strength 350 Min MPa
Elongation A 18 Min %


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.