Precision Tube Production - Alloys

We manufacture our products to your requirements so contact our sales team on 01844 463103 or email We specialise in small quantity and quick delivery.  

Nickel Alloy 263 Seamless Tube (Nimonic 263®) - Specifications UNS N07263, Ni, Co20, Cr20, Mo5.9, Ti2.1, A10.5, BS HR 404,

Weight % Nickel 263 Tube
Ni Bal
Cr 19-21
Mn 0.60 max
Si 0.40 max
C 0.04-0.08
Al 0.60 max
Ag 0.0005 max
B 0.0005 max
Fe 0.07 max
Cu 0.20 max
Mo 5.6-6.1
Co 19 -21
Ti 1.90-2.40
Al+Ti 2.40-2.8
Pb 0.0020 max
Bi 0.0001 max
S 0.007 max

Nickel Alloy 263 (Nimonic 263®) is available in Drawn Tube. Nickel 263 tube is available in many sizes from stock, however there is a minimum production of 30m.

Nickel Alloy 263 Precision Seamless Tube is available the following size ranges.
Outside Diameter - 0.25mm (0.010") up to 16.00mm (0.625")
Wall - 0.05mm (0.002") up to 1.00mm (0.040")
Straight Lengths - 1.00mm (0.040") up to 5000.00mm (197")
Coils Lengths - 5 Metres to 15 Metres
Standard Tolerance- OD &ID +/-0.03mm (0.0012")
Wall +/- 10%
Tight Tolerance - OD&ID +/- 0.015mm (0.0006")
Wall +/-3%
Some thin wall tubes up to 25.40 mm (1.000") can be supplied.

Where specific properties or dimensions are required by a customer our technical and quality departments are available to define and produce suitable standards within exiting BS specifications. Contact our sales team on 01844 463103 or email


Every effort is made to ensure that technical specifications are accurate. However, technical specifications included here should be used as a guideline only. All specifications are subject to change without notice

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