Copper Alloys, Copper-Nickel (Cupro-Nickel)DEFSTAN 02-835 (NES835) Bar & Forgings

An advanced precipitation hardenable copper nickel with improved mechanical properties over 90/10 and 70/30.

DEF STAN 02-835 is a hot forged, stress relieved high strength cupronickel developed primarily for marine and offshore applications. The alloy contains around 14.5% nickel, 4.5% manganese and smaller additions of aluminium and iron to increase the overall material strength and corrosion resistance.

Specified as an MOD (Navy) grade, it combines the inherent corrosion resistance and antibiofouling benefits of traditional cupronickels whilst offering higher strength and toughness levels than the aluminium bronzes.

NES 835 is mainly used in naval engineering, aerospace and defence applications.

Range

Product Form	Imperial Sizes	Metric Sizes
Round Bar DEFSTAN 02-835	1 ¹⁄₄" - 6 ¹⁄₂"	65mm - 135mm

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Related Specifications

DEF STAN 02-835
NES835
NES 835
DEF STAN 835

Properties

Chemical Composition

Chemical Element	% Present
Nickel (Ni)	13.50 - 16.50
Iron (Fe)	0.70 - 1.20
Manganese (Mn)	3.50 - 5.50
Aluminium (Al)	1.00 - 2.00
Chromium (Cr)	0.00 - 0.50
Carbon (C)	0.00 - 0.05
Lead (Pb)	0.00 - 0.02
Magnesium (Mg)	0.00 - 0.05
Phosphorous (P)	0.00 - 0.01
Silicon (Si)	0.00 - 0.15
Sulphur (S)	0.00 - 0.15
Tin (Sn)	0.00 - 0.10
Zinc (Zn)	0.00 - 0.20
Copper (Cu)	Balance

Mechanical Properties

Mechanical Property	Value
Proof Stress	430 Min MPa
Tensile Strength	725 Min MPa
Elongation A50 mm	18 Min %

Mechanical Property	Value
Proof Stress	400 Min MPa
Tensile Strength	725 Min MPa
Elongation A50 mm	18 Min %

Applications

Critical marine fasteners
Gears
Shafts
Subsea components
High integrity components
Stampings

Characteristics

High strength
Excellent corrosion and biofouling resistance
Low magnetic permeability
High impact strength retained down to cryogenic temperatures
Spark resistance
Very good anti galling properties
Good resistance to impingement
Resistance to hydrogen embrittlement

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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, Copper-Nickel (Cupro-Nickel)DEFSTAN 02-835 (NES835) Bar & Forgings

An advanced precipitation hardenable copper nickel with improved mechanical properties over 90/10 and 70/30.

Range

Related Specifications

Properties

Rod and Forgings

DEFSTAN 02-835

Rod Up to 125mm

DEFSTAN 02-835

Forgings Up to 125mm

DEFSTAN 02-835

Applications

Characteristics

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