Def Stan 02-779 - Copper Alloys

A UK Defence Standard for 90/10 Cupro Nickel forgings, rod and section. The alloy CuNi10 is supplied in the wrought condition, has very good corrosion resistance in sea water and does not suffer from stress corrosion cracking. Def Stan 02-779 is also completely immune to bio-fouling, and ideal for applications with extrended exposure to aggressive marine environments. This specification has been superseded by Def Stan 02-879 Part 2.

Equivalent Specifications

Def Stan 02 779
BS EN 12163 CW352H
BS EN 12449 CW352H
BS EN 12165 CW352H
ASTM B151 C70600,C70620
ASTM B171 C70600,C70620
ASTM B466 C7060,C70620
ASTM B467 C70600, C70620
MIL T 16420 K
MIL C 15726
MIL C 24679
SAE J 463 CA 706
BS 2871 CN 102
BS 2874 CN 102
NES 779
JISH 3300
DIN 17664 2.0872
DIN 17671 2.0872
DIN 17672 2.0872
DIN 86019 2.1972 CuNi10Fe1,6Mn,
DIN 86028
DIN 86036
DIN 86037
DIN 86086
DIN 86087
DIN 86088
DIN 86089
DIN 86090
DIN 1755
VG 85 004
EEMUA 144, 145, 146
GAM MM11 – GAM MM13
INDRET IT 108
NFA 51-102 ISO 429
SIS 1456.67

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 modern 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 Off Shore oil platforms, fish farms and general marine cladding where sea growths are a problem.

Description	Cupro Nickel
Nominal Composition	CuNi10Fe1Mn
Alloy Type	wrought

Typical Mechanical Properties

Tensile Strength (N/mm²)	370
Proof/Yield Strength (N/mm²)	164
Elongation (%)	45
Hardness Brinell	85
Impact Izod J20°C	140

Typical Physical Properties

Density g/cm³	8.9
Melting Temperature Range °C	1090 - 1125
Thermal Conductivity W/mK	50
Electrical Resistivity μΩ.m15°C	19
Coefficient of Thermal Expansion 0-250°C	17
Relative Magnetic Permeability	1.01
Coefficient of Friction

Copper Alloys 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’s technical team on +44 (0) 1782-816888, or email [email protected].

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 accepted 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.