ISO 513 group M (Stainless steel): workpiece materials, grades and selection
What ISO 513 group M covers
| Group | M — Stainless steel (identification colour: yellow) |
|---|---|
| Workpiece materials | Austenitic, ferritic, martensitic and duplex stainless steels. Tough, work-hardening chips. |
| Application band | M10 (finishing) – M40 (roughing) |
| Grade behaviour | Grades must resist built-up edge and notch wear at the notch depth line; toughness matters more than peak hot hardness because of work hardening and thermal fluctuations. |
| Typical coating family | PVD-coated fine-grain grades are typical; sharp edges reduce work-hardening of the surface. |
| Selection guidance | Use sharp, positive geometries with moderate feeds to stay under the work-hardened layer; avoid dwell and light passes that rub. |
Group definition, identification colour and band numbering per ISO 513 (classification of carbides by use). Behaviour and coating notes are general engineering guidance, not manufacturer cutting data.
Grades catalogued for M cutting
These grades on InsertBase list ISO 513 group M in their official catalogue record.
| Grade | Brand | ISO 513 groups | Coating | Source |
|---|---|---|---|---|
| 1105 | Sandvik Coromant | M / S | PVD | Catalogue ↗ (2026-09-28) |
| 1115 | Sandvik Coromant | M / S | PVD | Catalogue ↗ (2026-09-28) |
| 1125 | Sandvik Coromant | K / M / N / P / S | PVD | Catalogue ↗ (2026-09-28) |
| 1205 | Sandvik Coromant | M / S | PVD | Catalogue ↗ (2026-09-28) |
| 1515 | Sandvik Coromant | M / P | CVD | Catalogue ↗ (2026-09-28) |
| 1525 | Sandvik Coromant | K / M / P | PVD | Catalogue ↗ (2026-09-28) |
| 1625 | Sandvik Coromant | K / M / P | PVD | Catalogue ↗ (2026-09-28) |
| 2015 | Sandvik Coromant | M | CVD | Catalogue ↗ (2026-09-28) |
| 2025 | Sandvik Coromant | M | CVD | Catalogue ↗ (2026-09-28) |
| 2035 | Sandvik Coromant | M | PVD | Catalogue ↗ (2026-09-28) |
| 2220 | Sandvik Coromant | M | CVD | Catalogue ↗ (2026-09-28) |
| 235 | Sandvik Coromant | M / P | CVD | Catalogue ↗ (2026-09-28) |
| 4335 | Sandvik Coromant | K / M / P | CVD | Catalogue ↗ (2026-09-28) |
Inserts catalogued in this group
19 catalogued models on InsertBase offer at least one manufacturer grade in group M. Browse the model index and check each model's grade table.