Overview - ISO 1832:2017 (Indexable inserts for cutting tools - Designation)
ISO 1832:2017 establishes a standardized designation code for indexable inserts used on cutting tools. The standard is intended to simplify ordering, specification and interchangeability of inserts made for a wide range of cutting materials, including cubic boron nitride (CBN) and polycrystalline diamond (PCD) tipped and solid inserts. It defines how to express insert geometry, clearance, tolerances, fixing/chip-breaker types and other essential characteristics in a compact, unambiguous code.
Key topics and technical requirements
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Designation code structure
- Indexable inserts: a 9-symbol code (symbols ①–⑦ are mandatory; ⑧–⑨ optional).
- Tipped inserts (per ISO 16462 / ISO 16463): a 12-symbol code (⑪ and ⑫ mandatory for tipped inserts; others optional as required).
- Optional manufacturer symbol (⑬) may be appended for proprietary details.
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What each symbol specifies (high-level)
- Insert shape (triangle, square, round, rhombic, etc.)
- Normal clearance (A, B, C … N, P; e.g., 3°, 5°, 7° etc.)
- Tolerance class for inscribed circle, thickness and related dimensions
- Fixing and/or chip-breaker type
- Insert size and thickness (standardized size symbols)
- Corner configuration, cutting-edge condition, cutting direction and tipped-edge details (size, style, length)
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Geometry & reference systems
- Uses conventions from ISO 3002-1 for tool-in-hand reference planes and working angles.
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Material designations
- Explicit designation symbols for CBN (BL, BH, BC) and PCD (DP) inserts are included.
Practical applications and who uses ISO 1832:2017
- Tool manufacturers - to label and publish standardized insert product codes in catalogs and data sheets.
- Purchasing and procurement - to place clear, error-free orders across suppliers and regions.
- Design and process engineers - to specify the exact insert geometry and edge preparation for turning, milling and other metalcutting operations.
- Quality and inspection - to verify dimensional tolerances and interchangeability against a recognized code.
- CAD/CAM and tooling data managers - to map ISO 1832 codes into tool libraries and toolset databases.
Related standards
- ISO 16462 - CBN inserts (dimensions, types)
- ISO 16463 - PCD inserts (dimensions, types)
- ISO 3002-1 - Geometry and reference systems for cutting tools
- ISO 513 - Cutting material group designations
- Annex C of ISO 1832 links designation relationships to the ISO 13399 tooling-data model
ISO 1832:2017 is essential for anyone specifying, ordering or cataloguing indexable inserts, ensuring consistent communication of insert shape, size, clearance and tolerance across the machining and tooling supply chain.
