D3 Tool Steel: Abrasive Wear and Chipping

D3 is a cold-work tool-steel designation; BÖHLER lists K100 with an approximate D3 cross-reference. Material reference.

Abrasive Wear and Chipping

For a blanking or wear tool, decide whether abrasive wear or edge chipping governs service life. A wear-focused grade can still fail early if the edge is unsupported. Do not transfer the proprietary K100 supply condition or test results to every product sold as D3.

Manufacturing and acceptance checks

Provide the work material, edge geometry, section and target hardness. Ask for the supplier's own hardening and tempering procedure and agree grinding allowances. Inspect edge integrity after finishing and document tool-life trials with both wear measurements and any chipping observed.

Compare related options

• S7 Tool Steel
• O1 Tool Steel

Reference and scope

BÖHLER K100: manufacturer technical sheet and approximate D3 reference provides material or specification background. The checks above are purchasing guidance; final acceptance values must come from the agreed grade, product specification and condition.

Send a drawing and material requirements for review. Include quantity, critical dimensions and the inspection evidence required with delivery.