8mm Thick Ground Flat Stock

This range of ground flat stock is made from tool steel and can be sourced in multiple metric lengths. Generally speaking, the material is applied for tool-making purposes, as each piece consists of ground edges and surfaces and saw-cut ends. As a result, the metal can be easily manipulated to fit a project’s unique requirements due to its annealed condition.

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Advantages and Features

One of the biggest advantages of ground flat stock is its longevity, wear resistance, and durability, as offered by the cutting edge. In addition, the removal of the need for grinding and milling allows for greater timesaving possibilities. Similarly, wastage can be narrowly avoided thanks to the variety of sizes available, as this enables you to choose the exact dimensions that are required. Lastly, ground flat stock can be used in particularly demanding temperatures and environments due to its high dimensional stability.

Common Uses

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

  • Broaches
  • Bushings
  • Cams
  • Chuck jaws
  • Cloth cutters
  • Cold taps
  • Collets
  • Cutting hobs
  • Knife production
  • Lathe centres
  • Master cavity sinking hobs
  • Mould-making applications
  • Plug gauges
  • Precision measuring tools
  • Press tools
  • Reamers
  • Stamping dies
  • Strip slitting cutters
  • Thread gauges
  • Trimmer dies
  • Tube expander rolls
  • Wood-cutting tools

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 0.035% maximum


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 tight tolerances, which is why it’s widely applied in the tool-making industry.

How flat is ground flat stock?

As far as flatness tolerance is concerned, there isn’t an absolute definitive tolerance. Instead, the description of “flat” simply refers to the fact that the material isn’t round.

How hard is ground flat stock?

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

Why are tool steels hard?

The substantial carbide content (NOT tungsten carbide) in tool steels, as created by the low carbon and moderate to high alloy, leads to wear resistance, toughness, and hardness in tool steel.

Shop 8mm Thick Ground Flat Stock at Rennie Tool Company

Rennie Tool Company is here to help with all your 8mm thick ground flat stock needs. We can prepare you for any project thanks to the multiple lengths that we stock. Browse the collection below.