Material guide
The right grade for every material.
Steel, stainless, cast iron, aluminium, titanium or hardened steel. Each one cuts best with its own grade.
Reference chart
ISO material groups
Six groups, one colour each. Find your material, and you know which grade to ask for.
| Group | Material | Examples | Typical Vc, coated carbide | Watch out for |
|---|---|---|---|---|
| P | Steel | EN8, EN19, EN24, MS, alloy steel | 150 – 300 m/min | Long chips. Choose the right chipbreaker. |
| M | Stainless steel | SS 304, 316, 17-4 PH, CF8M | 120 – 220 m/min | Work-hardening, built-up edge |
| K | Cast iron | Grey CI, SG iron, CGI | 150 – 300 m/min | Abrasion, interrupted cuts, scale |
| N | Non-ferrous | Aluminium, brass, copper | 300 – 1000+ m/min | Built-up edge. Use sharp or polished tools. |
| S | Superalloys & titanium | Ti Gr 5, Inconel, cobalt-chrome | 30 – 80 m/min | Heat at the edge, notch wear |
| H | Hardened materials | Hardened steel 45–65 HRC | 50 – 150 m/min | Edge chipping. Consider CBN. |
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