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 718 Seamless Tube (Inconel 718®) - Specifications UNS N07718,
Ni 52, Cr18, Mo3, Nb5, Ti1, Al0, Fe, AMS 5589, AMS 5590

Weight % Nickel 718 Tube
C 0.08
Mn 0.35
P 0.015
S 0.015
Si 0.35
Cr 17-21
Ni 50-55
Mo 2.8-3.30
Cb 4.75-5.50
Ta 0.05
Ti 0.65-1.15
Al 0.20-0.80
Co 1.0 max
B 0.006
Cu 0.30
Fe Rem

Nickel Alloy 718 (Inconel 718®) is available in Drawn Tube. Nickel 718 tube is available in many sizes from stock, however there is a minimum production of 30m.

Nickel Alloy 718 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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