TiCN Coated Heavy Load Straight Shank Punches (M2 Equivalent Steel)

These TiCN-coated heavy-load straight shank punches are used in injection-mold tooling whenever the punch must pierce features reliably under repeated cycles—especially in high-wear die and secondary tooling. The straight shank geometry improves guidance and alignment, supporting stable dimensional control across production runs.

• Automotive and electronics insert punching: Ideal for punching through sheet-like or laminated inserts in supporting dies where tip contact pressure is high and consistent. The TiCN surface helps resist abrasion while preserving the precision needed for part-to-part repeatability.
• Consumer product die work: Suited for forming or trimming tasks where tool life is driven by edge wear. The heavy-load shank design helps reduce misalignment-related variation during continuous operation.
• General industrial die punching: Works well for mixed material die operations requiring a balance of hardness and toughness from M2-equivalent or powdered HSS construction.

This series is available in SKH51 equivalent (M2) or SKH40 equivalent powdered high-speed steel. Both are high-speed steel grades selected for wear resistance in punching and for maintaining cutting performance under load.

• SKH51 (M2 equivalent): Typically used where higher hardness and abrasion resistance are needed. In practice, M2-class steels are commonly supplied/handled after quench & temper to achieve a target hardness around ~HRC 60–63, trading some toughness for toughness/hardness balance.
• SKH40 (powder HSS equivalent): Powder metallurgy improves uniformity and secondary carbide distribution, which can enhance wear behavior. Heat treatment is likewise based on quench & temper to reach service hardness suitable for die punch edges.

For applications dominated by abrasive wear, TiCN coating plus the chosen HSS grade improves service life; for impact-heavy duty, select the grade that best matches the required toughness.

Select dimensions by matching the punch tip and overall length to the mold cavity/core requirements and the desired penetration depth. The nominal diameter (4 ~ 25 mm) should match the guide fit and the clearance designed in the punch holder and bushings.

• Tip dimension P (3 ~ 20 mm): Choose P to ensure the punch engages the intended feature profile without excessive edge loading.
• L (40 ~ 80 / 40 ~ 100 / 40 ~ 120 mm): Match L to the required stick-out and the guidance length needed for stable punching through the die stack.
• LC full length alteration (20 ~ 80 / 20 ~ 100 / 20 ~ 120 mm): Use LC to represent the allowable variation/length adjustment for your tool layout while maintaining sufficient guided engagement.

Because punches must maintain alignment under load, keep tolerances consistent with your punch holder and any bushing system. Where a dimension set offers multiple ranges (e.g., L and LC step options), select the closest length family to minimize rework while ensuring safe clearance and correct penetration.