Here’s a list of leading national suppliers of heat resistant stainless steel in the United Kingdom:

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Leading Suppliers of Heat Resistant Stainless Steel in the UK

1. Outokumpu

   • Website: outokumpu.com
   • Description: A global leader in stainless steel production, offering a wide range of heat-resistant alloys.

2. A. J. Wells & Sons

   • Website: ajwells.co.uk
   • Description: Specializes in stainless steel products, including heat resistant grades for various industrial applications.

3. Thyssenkrupp Materials UK

   • Website: thyssenkrupp-materials.co.uk
   • Description: A major distributor of materials, including heat resistant stainless steel, serving multiple sectors.

4. Apex Stainless Fasteners

   • Website: apexstainless.com
   • Description: Focuses on stainless steel fasteners and offers heat resistant options for high-temperature applications.

5. Stainless Steel Fabrications Ltd.

   • Website: stainlesssteelfabrications.co.uk
   • Description: Provides bespoke stainless steel solutions, including heat resistant alloys for specific industrial needs.

6. BSS Industrial

   • Website: bssgroup.com
   • Description: Supplies a range of industrial products, including stainless steel materials suitable for high-temperature applications.

7. The Metal Company

   • Website: themetalcompany.com
   • Description: Offers a variety of stainless steel products, including heat resistant grades for diverse applications.

8. Altemp Alloys Ltd.

   • Website: altempalloys.com
   • Description: Specializes in high-temperature and heat resistant alloys and stainless steels for industrial applications.

9. Brammer Buck & Hickman

   • Website: brammerbuckhickman.com
   • Description: A leading distributor of industrial products, including high-performance stainless steels.

10. Metals 4 U

    • Website: metals4u.co.uk
    • Description: Supplies a wide range of metals, including heat resistant stainless steel for various sectors.

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This list includes a variety of companies that specialize in heat resistant stainless steel, suitable for industries such as aerospace, automotive, chemical, and manufacturing. Each company's website provides more detailed information about their offerings and services.