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Copper and copper alloys.
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Photo micrographs of copper alloys
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:: Useful Reference
Copper (SF-Cu)
Widely used in marine and industrial heat exchangers.
In addition to round tubes, copper can also be offered
in integrally finned and corrugated rope sections. Good
resistance to corrosion in fresh water. Working temperature
up to 250 deg.-C. Cooling water speed 1.5 m/s.
(usually STOCK ITEM, for details please
contact us on +44(0)1484-515386 or
email: enquiries@abacus-tubes.co.uk)
Brass (CZ126) arsenic inhibited
Gives good service with clean mains, river and lake
water where lack of severe corrosion conditions does
not warrant the use of more expensive alloys.
(usually STOCK ITEM, for details please
contact us on +44(0)1484-515386 or
email: enquiries@abacus-tubes.co.uk)
Admiralty Brass (CuZn28
SN1) CZ111
Will operate successfully in steam condensers and coolers
for land based stations where river waters are brackish
and conditions are slightly acid or alkaline. Also resistant
to sulphur-bearing gases. Cooling water speed 2.0 m/s;
temperature up to c. 200 deg.-C.
(for further information please contact us for availability
on +44(0)1484-515386 or email: enquiries@abacus-tubes.co.uk)
Aluminium Brass (CuZn20
Al2) CZ110
Extensively used material and one of the most popular.
This alloy forms a protective film which has self-healing
properties. This film is dependant on oxygen dissolved
in the water and will not renew itself in polluted or
stagnant water. High resistance to corrosion in clean
seawater or where land conditions are difficult. Cooling
water speed 2.5 m/s; working temperature up to c. 250
deg.-C.
(usually STOCK ITEM, for details please
contact us on +44(0)1484-515386 or
email: enquiries@abacus-tubes.co.uk)
Cupro Nickel Alloy (CuNi10
Fe1 Mn) CN102
Widely used in condensers, coolers and heat exchangers
where resistance to corrosion and erosion is paramount,
yet maintaining a high thermal conductivity rate. To
be used preferably in marine conditions. Forms a protective
film which is multi-layered in flowing seawater. Resists
marine bifouling. Cooling water speed 2.5 m/s; working
temperature c. 250 deg.-C.
(usually STOCK ITEM, for details please
contact us on +44(0)1484-515386 or
email: enquiries@abacus-tubes.co.uk)
Cupro Nickel Alloy (CuNi
30 Mn1 Fe) CN107
Improved corrosion resistance and almost insensitive
to stress corrosion, this alloy will give superior results
in high velocity polluted water, including seawater.
A reduced thermal conductivity level, but will retain
its strength at moderately increased temperatures. Cooling
water speed up to 4.5 m/s.
(for further information please contact us for availability
on +44(0)1484-515386 or email: enquiries@abacus-tubes.co.uk) |
