Steel Tempering Temperatures | Colour Chart

Tempering Colours

ºF ºC
630 Grey Green 330
610 Grey Blue 320
590 Light Blue 310
570 Wedgewood Blue 300
550 Dark Blue 290
530 Violet 280
520 Purple 270
500 Red Brown 260
480 Yellow Brown 250
460 Dark Yellow 240
450 Yellow 230
430 Straw 220
410 Light Yellow 210
ºF ºC


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Steel Database

In addition to our published online specifications we also offer a comprehensive offline database of specialist and rare steel grades. Our database has been compiled over the last 40 years and offers knowledge of hard to find steel grades and alternative standards. Please contact our experienced sales team to discuss your requirements.

When enquiring on any of our steel products please ensure you provide the following information to our sales team:-

  • Size & quantity – details of the shape, size, length and quantity.
  • Steel specification – full details of the steel grade.
  • Mechanical properties – details of hardness or mechanical properties such as tensile and yield

West Yorkshire Steel are stockholders and suppliers of a large range of steel grades and specifications. Our sales team will provide a friendly and reliable service combined with a wealth of experience and knowledge. Use the search box at the top of this page to help you find your required grade. If not shown on our website then please contact our sales team who can search our comprehensive database to see if any equivalent grades are available.

Our steel grades supplied are available with a BS EN 10204 3.1 mill certificate, a cast and analysis certificate or certificate of conformity. Please request what (if any) certification requirements are needed when placing any orders.

Our steel grades are supplied in accordance with our ISO 9001:2008 registration. Our aim to satisfy the quality and delivery needs of our customers and we measure our performance by meeting customers’ requirements. We work to continually improve the service that we provide. In order to achieve this, it is our policy to maintain an efficient and effective Quality Management System based upon the requirements of BS EN ISO 9001:2008. Our staff are appropriately trained in order to effectively implement the Quality Management System. The achievement of quality and continuous improvement is fundamental to all the steel products and services provided by us and are practiced by all employees as an integral part of their daily work.