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.  

Alloy K, Kovar (Nilo K ®) Seamless Tube - Specifications UNS K94610, Ni 29, Co 17, Fe.

Weight % Nilo K® Tube
Ni 29
Fe 53.0
Co 17.0
C 0.04 max
Mn 0.50 max
Si 0.20
Al 0.10 max
Cr 0.20 max
Mg 0.10 max
Zr 0.10 max
Ti 0.10 max
Cu 0.20 max
Mo 0.20 max

Alloy K, Kovar (Nilo K ®) is available in Drawn Tube. Nickel Alloy 48 tube is available in many sizes from stock, however there is a minimum production of 30m.

Alloy K, Kovar (Nilo K ®) 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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