25mm Thick Ground Flat Stock

Our collection of ground flat stock is grade 1.2510 tool steel (AISI O1) and can be purchased in multiple metric and imperial sizes. Generally, these materials are applied in toolmaking due to the saw-cut ends, ground edges, and surfaces of every piece. As a result of the material’s annealed condition, it can be engineered to fit within a project’s unique requirements.

Advantages and Features

One of the biggest advantages of ground flat stock is its cutting edge which provides longevity, strong wear resistance, and durability—additionally, the lack of grinding and milling that’s needed means they facilitate timesaving. Moreover, the diversity in sizes allows for the exact required size to be chosen, reducing the likelihood of wastage. Finally, the high dimensional stability enables work to be completed in some of the most challenging temperatures and environments.

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Common Uses

Thick ground flat stock has multiple applications, including the following:

  • Wood-cutting tools
  • Tube expander rolls
  • Trimmer dies
  • Thread gauges
  • Strip slitting cutters
  • Stamping dies
  • Reamers
  • Precision measuring tools
  • Mould-making applications
  • Knife production
  • Cutting hobs
  • Cold taps
  • Cloth cutters
  • Cams

Chemical Composition

The chemical composition is as follows:

  • Carbon 0.95%
  • Manganese 1.2%
  • Chromium 0.50%
  • Tungsten 0.50%
  • Silicon 0.25%
  • Vanadium 0.20%
  • S & P up to


What is ground flat stock?

Ground flat stock is a precision ground flat bar that comes in fixed lengths. It’s known for its accuracy and light tolerances, which is why it’s so commonly applied in the toolmaking industry.

How flat is ground flat stock?

Regarding flatness tolerance, there is no real definitive figure. Instead, the described “flatness” simply means the material isn’t round. 

How hard is ground flat stock?

Ground flat stock has a maximum hardness due to its annealed condition.

Why are tool steels hard?

A considerable amount of carbide is created by tool steels due to the low carbon content and moderate to high alloy. Consequently, fair wear resistance, toughness, and hardness are assured.

Shop 25mm Thick Ground Flat Stock at Rennie Tool Company

If you require 25mm thick ground stock, Rennie Tool Company has got you covered. Thanks to our extensive stock of multiple lengths, we’re able to accommodate a wide array of projects.

You can find what you’re looking for by browsing our product selection. Despite this, if you require further advice and guidance, please don’t hesitate to get in touch. You can email us at esales@rennietool.co.uk or give us a call at 0161 477 9577.