Equivalent Specifications

Def Stan 02 780
BS EN 12163 CW354H
BS EN 12420 CW354H
BS EN 12165 CW354H
BS EN 12449 CW354H
ASTM B151 C71500
ASTM B171 C71500
ASTM B466 C71500
ASTM B467 C71500, C71520
MIL T 16420 K, MIL C 15726, MIL C 24679
SAE J 463 CA 71500
BS 2871 CN107
BS 2874 CN 107
DGS 320, NES 780
DIN 17664 wn 2.0882
DIN 17671, DIN 17672
NFA 51-102, GAM MM11
INDRET IT-108
ISO 429
SIS 1456-82
JISH 3300 C7150 
NES 780 70/30

Key Features

The addition of nickel to copper improves strength and corrosion resistance but good ductility is retained. Copper-nickel alloys have excellent resistance to marine corrosion and biofouling.

Copper-nickel alloys are widely used for marine applications due to their excellent resistance to seawater corrosion, high inherent resistance to biofouling and good fabricability. They have provided reliable service for several decades whilst offering effective solutions to today's technological challenges.

Typical Uses

Cupro-nickel is used extensively in sea water application where its excellent corrosion resistance and ani fouling properties make it a popular alloy for offshore oil platforms, fish farms and general marine cladding where sea growths are a problem.
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Def Stan 02-780 Part 2

A UK Defence Standard for 70/30 Cupro Nickel forgings, rod and sections. The alloy CuNi30Mn is manufactured in the wrought condition, it has excellent overall corrosion resistance in sea water and does not suffer from stress corrosion cracking. This specification has been superseded by Def Stan 02-879 Part 2.

Description Cupro Nickel
Nominal Composition CuNi30
Alloy Type Wrought

Typical Mechanical Properties

Tensile Strength (N/mm²) 370
Proof/Yield Strength (N/mm²) 138
Elongation (%) 50
Hardness Brinell 75
Impact Izod J20°C  

Typical Physical Properties

Density g/cm³ 8.94
Melting Temperature Range °C 1170-1240
Thermal Conductivity W/mK 29
Electrical Resistivity μΩ.m15°C 34
Coefficient of Thermal Expansion 0-250°C 16
Relative Magnetic Permeability 1.01
Coefficient of Friction  

Copper Alloys Ltd has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys Ltd's technical team on +44 (0) 1782-816888, or email sales@copperalloys.net.

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with tempeter, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be acepted by the Company in respect of any action taken by any third party in reliance thereon.

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.

Any 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. Any contract between the Company and a customer will be subject to the Company's 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.