Walter Tools WSM20S carbide grade — ISO 513 groups, coating and cross references
Grade identification
| Manufacturer | Walter Tools |
|---|---|
| Grade designation | WSM20S |
| Catalogue description | WSM20S / PVD, stainless steel M20 general |
| ISO 513 workpiece group | M |
| Coating family | PVD |
| Substrate | tough substrate |
| Source | Walter Tools — Technical Compendium Turning 2024 (Tiger·tec Gold grades) · accessed 2026-09-28 |
Source: Walter Tools official catalogue, accessed 2026-09-28. Grade behaviour statements on this page are general ISO 513 engineering guidance, not manufacturer cutting data.
ISO 513 fit
Walter Tools WSM20S is filed under ISO 513 group M. Check the manufacturer's application band for the exact position within the group. See the group pages under ISO 513 material groups for what each letter means in practice.
Offered on these inserts
Cross-brand grade equivalents
Equivalents are listed only when they can be traced to a published cross-reference chart or confirmed in both manufacturers' official catalogues. Unconfirmed chart rows are marked VERIFY; nothing on InsertBase is guessed.
| Equivalent grade | Brand | Match | ISO 513 | Coating | Basis / note | Source |
|---|---|---|---|---|---|---|
| 1115 | Sandvik Coromant | PARTIAL | M / S | PVD | PVD stainless M20 general; same PVD family and M group. | TaeguTec — Grade Comparison Table (turning grades across 12 manufacturers) (2026-09-28) |
| 1525 | Sandvik Coromant | VERIFY | K / M / P | PVD | WSM20S PVD stainless; 1525 is TiCN-based with TiN — same PVD family, M overlap. | TaeguTec — Grade Comparison Table (turning grades across 12 manufacturers) (2026-09-28) |
Match levels: FULL = same ISO group, application band and coating family · PARTIAL = same band, different coating or edge prep · VERIFY = quoted in aftermarket charts, unconfirmed by both catalogues.