Carbon Steel

Engineered to Perform — Quality Carbon Steel in Bar, Plate & Profile


Carbon steel stockholders and suppliers, delivering to the whole of the UK. Carbon steel grades are stocked in round bar, flat bar and steel plate. Carbon steel grades such as mild steel S275, S355, EN8 and EN9 can be supplied flame cut from plate. Steel profiles can be cut to your required sizes and if required surface ground on thickness.

If you do not find the carbon steel specification you require on our web site please contact our sales team who may be able to assist you with your enquiry.

The characteristics of each carbon steel grade is mainly defined by the carbon content. The most common carbon steel grades have a carbon content ranging from 0.05% to 0.60%. For most engineering applications the maximum carbon content is 0.50%, carbon steel grades containing more carbon than this are usually used for tools. Carbon steel specifications are also defined by the addition of elements such as silicon, manganese, sulphur and phosphorous.

Carbon steel bar and plate is held on stock and delivered throughout the UK.  All orders are supplied in accordance with our ISO 9001 accreditation.

Form of Supply

West Yorkshire Steel are stockholders and suppliers of carbon steel specifications in round bar, flat bar and flame cut plate. Diameters in carbon steel grades can be precision ground to tight tolerances.

Contact our friendly sales team who will assist you with your enquiry.

  • Sheet
  • Plate
  • Flat
  • Diameter
  • Hexagonal
  • Tube

Click on the headings below for further info

Flame Cutting

Flame cut profiles can be supplied to your specific requirements. After flame cutting, steel blanks can be normalised or stress relieved to reduce any hardness on the flame cut edges. Steel profiles can be lumsden ground or precision ground to size on thickness. Flame cut plates can be supplied in a wide variety of carbon steel specifications.

Below we list our most common specifications. If you do not find the grade you require please contact our experienced sales team who may be able to assist you.


Carbon steel is available as bright drawn key steel in flat and square sections. With medium tensile strength key steel is used widely in general engineering for components such as plain, gibhead, taper and parallel keys. Key steel is produced to the required tolerances as specified in British Standard BS46 and BS4235.


Carbon spring steel specifications EN42, CS70, CS80, CS95 and CS100 are available as hardened and tempered spring steel strip, annealed spring steel strip, spring steel plate and spring steel sheet. EN43 spring steel is available in bar and plate. The grades commonly conform to BS970, BS1449, BS EN10083-1, BS EN10083-2, BS EN 10277 and BS EN 10278 standards.


X120Mn12 1.3401 is a  manganese steel with 1% carbon steel and an 11% to 14% manganese content supplied in plate. Offering excellent work hardening properties high manganese steel can be supplied in full plates or cut to your requirements.


Heat treatment temperatures for carbon steel specifications, including rate of heating, cooling and soaking times etc. will vary due to factors such as the shape and size of each carbon steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of carbon steel grades.


We recommend you contact your welding consumables supplier who should provide you full assistance and information on welding carbon steel grades.


Carbon steel is commonly available with BS EN 10204 3.1 mill certificate, please request when placing any orders.


All our carbon steel specifications are supplied in accordance with our ISO 9001:2015 registration.


  • West Yorkshire Steel has been selling Carbon Steel for over 50 years and has established itself as one of the UK’s leading suppliers of Carbon Steel.
  • Large stock range.
  • Reliable on time delivery throughout the UK, all items packaged safe and secure.
  • Knowledgeable team with decades of experience – our sales team are responsive and reliable.
  • Trusted by thousands of engineers and tool makers – 5 star Google reviews
  • Long-standing customer relationships – reliable supplier to customers old and new.
  • Trusted for quality, we are an ISO 9001 certified steel supplier.

What Our Customers Say

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Paul Wragg
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Great service from order to delivery. A pleasure to deal with.
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Mark Amiss
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I've found West Yorshire Steel to be very helpful, when in the need of specialist material.
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Ian Hutchings (Hutch)
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Only company we could find that could supply the special steel we were looking for at a good price and quick delivery. A pleasure to deal with.
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jason Platten
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Always receive pricing in good time and deliveries always meet our deadlines.
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Graeme Glover
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I am most impressed with the service that I received from West Yorkshire Steel. They supplied me with an unobtainable type of Steel in Australia and had it shipped half way across the world to me. I sourced this steel for an old mate of mine so that he could make engine bearings for his Classic French Sports car, he is 96 years young and WYS made him very happy. I would have no hesitation in recommending your Company in the future. Cheers Graeme Glover
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Chaz Jones
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Helpful service and fast delivery for small diameter Imperial sized EN16T. Thanks!
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Steve White
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Great company to deal with, friendly, super efficient, good price, and it was even delivered early! We buy a lot of small quantities of odd materials and will definitely be using them again. Thank you

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