Discover the composition, characteristics, properties and applications of our vast product range. Righton Blackburns' datasheets: designed to give customers confidence.

Data Sheets

Nickel Alloy - Cupro-Nickel (Copper-Nickel)

Alloy 500

Alloy 500 is a precipitation hardenable copper nickel alloy, with minimum 63% Nickel and the addition of titanium and aluminium that can be heat treated to give very high strength. The alloy has similar corrosion resistance to alloy 400 in a wide range of media including seawater, hydrofluoric acid, sulfuric acid and alkalies.

This alloy is supplied hot worked and aged (with cold worked mechanical properties)

Bars 1 inch to 4 inch diameter are supplied with 3.2 Certification.

Bars are UT tested to DEF STAN 02-729

All bars are of European Origin.

Chemical Composition

ASTM B865-04 (2015)
Bar, Rod, Forgings
Chemical Element % Present
Iron (Fe) 0.0 - 2.00
Carbon (C) 0.0 - 0.18
Manganese (Mn) 0.0 - 1.50
Silicon (Si) 0.0 - 0.50
Sulphur (S) 0.0 - 0.01
Aluminium (Al) 2.30 - 3.15
Copper (Cu) 27.00 - 33.00
Titanium (Ti) 0.35 - 0.85
Nickel (Ni) Balance

Alloy Designations

ASTM B865-04 (2015) / UNS N05500

BS 3076 NA18

NACE MR0175/0103

Generic Physical Properties

Physical Property Value
Density 8.5 g/cm³
Thermal Expansion 12.3 x10^-6 /K
Modulus of Elasticity 179 GPa
Thermal Conductivity 17.4 W/m.K
Room temperature Physical Properties are shown (20C) and most vary as temperature changes.

Mechanical Properties

ASTM B865-04 (2015)
Round Bar - Hot worked & Annealed -
Mechanical Property Value
Elongation A50 mm 20 Min %
Hardness Rockwell C 27 Min HRC
Proof Stress 690 Min MPa
Tensile Strength 965 Min MPa
Hardness Brinell 265 Min HB
ASTM B865-04 (2015)
Round Bar - Cold Worked/Age Hardened - 6.4mm to 25.4mm
Mechanical Property Value
Proof Stress 760 Min MPa
Tensile Strength 1000 Min MPa
Elongation A50 mm 15 Min %
Hardness Brinell 300 Min HB
Hardness Rockwell C 32 Min HRC
ASTM B865-04 (2015)
Round Bar - Cold Worked/Age Hardened - 25.5mm to 76.2mm
Mechanical Property Value
Proof Stress 690 Min MPa
Tensile Strength 965 Min MPa
Elongation A50 mm 17 Min %
Hardness Brinell 280 Min HB
Hardness Rockwell C 29 Min HRC
ASTM B865-04 (2015)
Round Bar - Cold Worked/Age Hardened - 76.3mm to 101.6mm
Mechanical Property Value
Proof Stress 655 Min MPa
Tensile Strength 930 Min MPa
Elongation A50 mm 20 Min %
Hardness Brinell 255 Min HB
Hardness Rockwell C 25 Min HRC


Excellent corrosion resistance

High strength and hardness

Low magnetic permeability

Excellent low temperature properties

High fatigue strength

Easily processed and machined


Pump and Valve components

Drill collars



Fasteners and Springs


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.

Registered Office

Please note this is a non trading address

Parkway House
Unit 6 Parkway Industrial Estate
Pacific Avenue
West Midlands
WS10 7WP

Registered in England & Wales.
Company No. 00143411
VAT No. 711115591

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