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Welcome to
flame hardeners ltd

The Management Team


Claire Casswell
Commercial Director


Roger Haw
Managing Director



Glynn Brown
Production Manager

How we can help you.

Our Services


See our origins and development


See how we can help you


View our capacity

Enquiries & Quotations

See the information we require to give you quotations and advice

Quality Approval

Download ISO9001 certificate

Suitable Materials

View the range of materials most suitable to the processes we offer


Download our newsletters

Data Sheets

Download our current data sheets


View our gallery


Production Controller,
CMS Cepcor

“CMS and FH have been working together for many years and they have always been very helpful and professional providing a quick turnaround when required.”

Lamond & Murray

“Flame Hardeners have provided first class heat treatment services and advice to Lamond and Murray for 40 years or more. Their quality, reliability and turnaround are excellent and we would not hesitate in recommending them to others.”

Commercial Director,
George Taylor & Co

"We have dealt with Roger and his Team for over 20 years. They always provide an excellent flamehardening service with zero quality issues and quick turnarounds."

Managing Director, Pennine Industrial UK

"Pennine Industrial have been working with Flame Hardeners in Sheffield for over 20 years hardening high performance industrial sprockets and rollers , during that time their expertise and specialist knowledge has been invaluable.


We have received excellent support and service from their friendly team and on the occasions when an express delivery was required to meet our customers breakdowns Flame Hardener’s have shown flexibility , responded promptly and worked around our needs.


A company with good old fashioned principles, giving your customers excellent service, backed up with technical assistance, and charging a fair price.


I have no hesitation to recommend Flame Hardeners to other companies who require metal heat treatment services."

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