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Invar 36

Alloy 42

Super Invar 32-5

Or Explore Our Other Alloys

Welcome to City Special Metals

Widest Acknowledged Range of Low Expansion Alloys in Europe  Expert Knowledge and Advice with over 70 years Experience Combined

We’re a globally recognised stockist of low & controlled expansion alloys, including Invar 36, Kovar, Alloy 42, and Super Invar 32-5.

Our team is dedicated to delivering high-quality, fully certified alloys from a UK stock inventory of unrivalled size. This dedication has followed us since our establishment in 2001 and contributed to us achieving our AS9120/ISO9001 Quality Management System accreditation, held since 2015.

We have experience working in a vast range of market sectors and we’re confident in our ability to deliver. Our team will work with you to deliver bespoke speciality metals for any requirement.

Our alloys are professionally cut, profiled and machined for all applications – always to specification, always on time.

We’ll guide you through the order process to ensure you’re getting the right product. Speak to us today, read more about our company or view our range of special metals here

Speciality Alloy & Metal Suppliers

  • Kovar

    Kovar Alloy Products & Properties City Special Metals stock and supply a wide range of kovar products and materials....

  • Invar 36

    Invar 36 Information Invar 36 (FeNi36) is a nickel-iron, low expansion alloy that exhibits a near zero rate of...

  • Alloy 42

    Alloy 42 Properties & Information Low Thermal Expansion alloys are perfectly suited for use in glass and ceramic seals,...

  • Super Invar 32-5

    Our Service We are a global speciality metals stockist with an extensive stock range, we are able to provide...

  • OFHC Copper

    Copper OFE Copper Alloy Properties OFHC Copper is electrolytically refined in a carefully regulated, oxygen-free environment. Our copper elements...

  • Titanium

    Titanium Suppliers Grades & Properties City Special Metals manufacture specialist Titanium alloy products across titanium grades 1-12 for a...

  • Inconel 625

    Inconel 625 Products & Properties As a nickel based superalloy, Inconel 625 is known for high strength and corrosion...

  • Inconel 718

    Inconel 718 Products & Properties Inconel 718 is used in applications requiring high strength to approximately 760°C (1400°F) and...

  • Nickel Alloys 200/201

    Nickel Alloy Stockist Commercially pure or low-alloy nickel alloys has characteristics that are useful in several fields, notably chemical...

  • Brazing Alloys

    Brazing Alloys Supplier Brazing is a metal-joining process whereby a filler metal or brazing alloy is heated above its...

  • Molybdenum

    Supplier of Molybdenum With its unique mechanical and chemical properties, molybdenum is an outstanding material that can meet the...

  • 17-4PH

    Contact us about Alloy 17-4 using the details below Whether you’re looking for a bulk order of 17 4...

  • Aluminium

    Aluminium Alloy Supplier Aluminium alloys are alloys in which aluminium (Al) is the predominant metal. The typical alloying elements...

The City Special Metals warehouse is home to a much wider range of alloys. Please contact us if you don't see the alloy you're looking for in the list above.
Call City Special Metals +44 1268 774 261
Skilled Personnel

Over 70 Years of Industry Knowledge & Expertise.

Dedicated To Quality

AS9120 / ISO 9001 Quality Assurance

Global Leaders

Over 2,500 stock lines in 50 different grades.


Market Sectors

  • Aerospace
  • Defence
  • Composite Tooling
  • Cryogenics
  • Electronics & Micro Electronic
  • Energy
  • High Vacuum
  • Layup Tooling
  • Medical
  • Motor Sport & Automotive
  • Mould Tooling
  • Oil & Gas
  • Optical & Laser
  • Thermal Solutions
  • Ultra-High Vacuum

Services we offer

Through in-house and managed services, our capabilities include managing each supply chain from planning to delivery.

Our realistic lead times and updates on-request will keep you informed throughout each project process, from the start of the project through every delivery thereafter. Read more about our Capabilities within the Company area of our website.