Copper Nickel

Overview

Holme Dodsworth are a leading stockist of Copper Nickel, a corrosion-resistant alloy of Copper and Nickel which has become indispensable across numerous industries due to its unique combination of durability, thermal efficiency, and antimicrobial properties

Typical uses are found in Marine and Offshore Engineering, Industrial Heat Exchange Systems, Water Treatment and Desalination Infrastructure and Healthcare and Hygienic Environments.

CuNi10Fe1Mn is resistant to moisture, non-oxidizing acids, to dry gases such as oxygen, chlorine, hydrogen chloride, hydrogen fluoride, sulfur dioxide, carbon dioxide.

Furthermore it is resistant to pitting- and stress corrosion cracking, as well as to hot seawater. Flow rates up to 6 m/s are possible

Material properties and typical applications

Copper Nickel is a corrosion resistant alloy with good hard soldering and welding properties, good cold formability, high temperature strength and excellent corrosion resistance to sea water in particular.

Applications:

  • Heat exchanger
  • Apparatus construction
  • Oilcooler
  • Fresh water maker
  • Air conditioner
  • Finned tubes
  • Brake lines
Overview
Shape Size Grade
Round Bar 1" 90/10 CW352H
Round Bar 35mm 90/10 CW352H
Round Bar 1 3/4" 90/10 CW352H
Round Bar 2" 90/10 CW352H
Round Bar 3" 90/10 CW352H
Round Bar 1" 70/30 CW354H
Round Bar 35mm 70/30 CW354H
Round Bar 1 3/4" 70/30 CW354H
Round Bar 2" 70/30 CW354H
Round Bar 2 1/2" 70/30 CW354H
Round Bar 3" 70/30 CW354H
Round Bar 4" 70/30 CW354H
Physical properties
Spec. heat 20° J/kg K 377
Thermal conductivity W/(mK) 46
Coefficient of thermal
expansion		 (20–100 °C) 10-6/K 17
Density g/cm3 8,9
Modul of elasticity GPa 130
Electrical resistance
(20°C annealed)		 μOhm
cm		 19
Overview
Material designation
EN CuNi10Fe1Mn
CW352H
UNS C70600
EEMUA UNS 7060X
BS CN 102
Composition
Cu Rest
Ni 9,0 – 11,0 %
Fe 1,0 – 2,0 %
Mn 0,5 – 1,0 %
P, Pb max 0,02 %
S, C, Sn max 0,05 %
Zn max 0,5 %
Fabrication properties
Forming   Surface treatment
Machinability Less suitable
(~20 %)		   Polishing  
Cold forming Excellent   Mechanical Good
Warm forming Good   Electrolyt Good
 
Joining   Heat treatment
WIG welding Excellent   Melting point 1130 - 1160°C
MIG welding Excellent   Hot working 950 – 1050°C
Hard soldering Excellent   Soft annealing 680 – 750°C
Soft soldering Excellent   Thermal stress relieving 400 – 450°C
Resistance welding Excellent      
 
Corrosion resistance   Product standards
CuNi10Fe1Mn is resistant to moisture, non-oxidizing acids, to dry gases such as oxygen, chlorine, hydrogen chloride, hydrogen fluoride, sulfur dioxide, carbon dioxide. Furthermore it is resistant to pitting- and stress corrosion cracking, as well as to hot seawater.
Flow rates up to 6 m/s are possible.		   Tube EN 12451
EN 12449
  Bars EN 12163
  Profile  
Mechanical properties (values can be achieved and are a function of size and form)
Refe Reference values at 20°C Annealed R290 R310 R480
Tensile strenght [MPa] ≥ 290 ≥ 310 ≥ 480
Yield strenght [MPa] ≥ 90 ≥ 220 ≥ 400
Elongation A5 [%] ≥ 30 ≥ 12 ≥ 8
Vickers hardness 75 - 105 105 - 150 ≥ 150