Controlled Expansion Alloy Wire

Avocet are working in partnership with JLC Electromet, a world leading melter and wire drawer of a variety of nickel based alloys including quality controlled expansion alloy wires.

These are iron-nickel alloys, equivalent to alloys such as Kovar®, exhibiting low expansion at room temperature. They are used in many glass-to-metal and hermetic sealing applications.

By modifying the nickel content, metallurgists have created a range of alloys that are tailored to suit the specific application. JLC have control of all the necessary processes in house including melting and drawing which enables the end user to have full traceability.

ProductThickness RangeWidth RangeGrades
Controlled Expansion Alloy WiresFrom 0.05mm to 12.0mm (round)

From 0.05mm (flat)
Up to 6mmAlloy 36
Alloy 41
Alloy 42
Alloy 46
Alloy 47
Alloy 48
Alloy 50

We can accommodate large quantities from many kilograms to just a few spools from stock.


Trademark of CRS Holdings Inc., a subsidiary of Carpenter Technology Corporation.

Get in Touch

Contact Us

"*" indicates required fields

* Required

This field is for validation purposes and should be left unchanged.


We are proud to have been awarded ISO 9001 certification, an internationally recognised standard that ensures services meet the needs of clients through an effective quality management system. Our decision to work towards ISO 9001 accreditation demonstrates our commitment to providing a high-quality and consistent service to our clients and our ongoing investment in technology, development and processes and procedures.

You can download a copy of our ISO 9001 : 2005 certificate here.
You can download a copy of our ISO 14001 : 2005 certificate here.
You can download a copy of our ISO 45001 : 2018 certificate here.