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EN3B (070M20) Engineering SteelEN3B (070M20)

Engineering Steel

EN3B is a general engineering steel which is suitable in applications where heavy stresses and heat treatment are not involved.

It is a bright drawn / turned mild steel with good machinability but poor hardenability, and is used in a variety of general engineering applications. EN3B can be case hardened and is normally used in the supplied condition. The material promotes good weldability characteristics.

Key Features:

EN3B Engineering Steel is suitable for low stress engineering applications and can be case hardened. Offering good machining and welding characteristics, EN3B is intended for general engineering use.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.



Download EN3B (070M20) Engineering Steel Datasheet

Typical Applications:

  • Shafts & rollers
  • Machinery parts
  • Threaded bars
  • Spindles & axles
  • Low stress engineering applications


We offer EN3B (070M20) Engineering Steel in round bar, flat bar, square bar, hexagon, sheet and plate. We provide processing services at our Head office and 14 service centres across the Group. With more than 30 band saws and a fully automated magazine feed CNC rod blanking line, we can process your material to your specific requirements.

Pick a Product

To find out more about Smiths Metal Centres extensive range of high engineering steels, click on one of our products on the side menu of this web page.

Have a question or need a detailed quote?

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on 0845 527 3331 or click here to contact us.