Copper Alloys, Aluminium BronzeDEFSTAN 02-834 (NES834) Bar & Forgings

A silicon aluminium bronze alloy with high strength and very high corrosion resistance especially in seawater and marine environments.

DEF STAN 02-834 or NES834, is an aluminium bronze with a 2% silicon addition to enhance strength, corrosion resistance and impact strength compared with other grades of aluminium bronze. The silicon content also improves the machinability rating.

The latest Defence Standard for this material is DEF STAN 02-879 Annex D, a specification recognised for its controlled low magnetic permeability level of <1.005. Impact strength is maintained down to cryogenic temperatures.

Mainly used in naval engineering, nuclear, aerospace and defence applications.

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Related Specifications

DEF STAN 02-834
NES834
NES 834
DEF STAN 834
DGS1044

Properties

Chemical Composition

Chemical Element	% Present
Nickel (Ni)	0.00 - 0.10
Iron (Fe)	0.50 - 0.70
Manganese (Mn)	0.00 - 0.50
Silicon (Si)	2.00 - 2.40
Aluminium (Al)	6.00 - 6.40
Lead (Pb)	0.00 - 0.01
Tin (Sn)	0.00 - 0.10
Zinc (Zn)	0.00 - 0.40
Copper (Cu)	Balance

Mechanical Properties

Mechanical Property	Value
Proof Stress	220 Min MPa
Tensile Strength	525 Min MPa
Elongation A50 mm	20 Min %

Mechanical Property	Value
Proof Stress	220 Min MPa
Tensile Strength	525 Min MPa
Elongation A50 mm	20 Min %

Mechanical Property	Value
Proof Stress	235 Min MPa
Tensile Strength	525 Min MPa
Elongation A50 mm	20 Min %

Mechanical Property	Value
Proof Stress	275 Min MPa
Tensile Strength	525 Min MPa
Elongation A50 mm	20 Min %

Applications

High strength and non-magnetic fasteners and components
Fasteners
Safety tooling
Valve components
Non-magnetic parts
Marine hardware
Gears
Bearings and bushes
Instrumentation components

Characteristics

High strength and toughness
Excellent corrosion resistance
High impact strength
Excellent wear resistance
Very low magnetic permeability
Good machinability
Excellent cryogenic properties

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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.

Copper Alloys, Aluminium BronzeDEFSTAN 02-834 (NES834) Bar & Forgings

A silicon aluminium bronze alloy with high strength and very high corrosion resistance especially in seawater and marine environments.

Range Enquiry

Related Specifications

Properties

Rod, Section, Forging & Forging Stock

DEFSTAN 02-834

Forging & Forging Stock All

DEFSTAN 02-834

Rod & Section Over 100mm

DEFSTAN 02-834

Rod & Section 50mm to 100mm

DEFSTAN 02-834

Rod & Section Up to 50mm

DEFSTAN 02-834

Applications

Characteristics

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