TiCN Coated Shoulder Punches

TiCN-coated shoulder punches are used in injection mold tooling where the punch must maintain a stable cutting edge while transmitting high cutting loads into the die. The single-stepped shank and shoulder feature help locate the punch consistently, reducing lateral movement during repeated engagement.

• Automotive connector housings: Ideal for precision punch-and-die operations on thick or wear-prone features because the TiCN coating supports abrasion resistance and the shoulder geometry helps keep contact repeatable across cycles.
• Consumer electronics brackets: Suitable for high-cycle trimming or forming when different tip shapes (round, rectangle, oblong, double flatted round, radius rectangle) are needed to match cavity edge profiles and maintain dimensional stability.
• Medical device housings: Selected when dimensional repeatability at the punch tip is required; the available steel variants allow balancing wear performance and toughness for controlled cutting actions.

This variant is suited to these scenarios due to the TiCN surface treatment combined with shoulder support for controlled penetration and predictable die contact.

These punches are offered in two high-speed steel options with TiCN coating for improved wear performance at the cutting interface. SKH51 equivalent (M2) is a conventional high-speed steel grade known for strong wear resistance; the typical trade-off is reduced toughness compared with lower-alloy HSS grades when heavily shocked. SKH40 equivalent (powdered HSS) improves cleanliness and fatigue resistance through powder metallurgy, supporting better toughness/edge stability under intermittent or shock-prone loads.

• Coating: TiCN for hard, abrasion-resistant surface behavior during punching.
• Heat treatment state: supplied in a hardened, ready-to-machine/ready-to-use punch condition (typical for HSS tool steel after quench & temper), tailored to the selected steel variant.
• Hardness/toughness: M2-family variants generally favor wear resistance, while powdered HSS formulations can improve toughness and microstructure uniformity.

Choose SKH51 (M2) when edge wear dominates; choose SKH40 powdered HSS when cycle life is limited by chipping or edge fatigue.

Select the punch diameter and tip geometry first, then verify overall length and shoulder/head dimensions against the die stack and knockout clearance. The shank diameter D is 3 ~ 25 mm, with a specified tolerance of +0.005/0 (m5). Match the punch shank to the guide/clearance design so the shoulder seats correctly without binding.

• Tip selection: Choose tip shape (Round, Rectangle, Oblong, Double Flatted Round, Radius Rectangle) and then confirm P (tip dimension) 1 ~ 18 mm plus W 1 ~ 6 mm and corner radius R 0.15 mm.
• Length stack-up: Select the head/tip length via B (tip length) using L, S, or X, and set L (L dimension) to the provided range set (e.g., 50 ~ 100, 60 ~ 100, 40 ~ 100, 70 ~ 100 mm). Confirm full length alteration LC 27 ~ 90.1 mm and total length tolerance change parameters (LCT/LMT 27 ~ 90.1 mm).
• Fit considerations: Because D is given with a tight upper tolerance (+0.005/0), ensure die wear allowance and guide bore tolerance are compatible.

Once tip and shank dimensions are matched, validate that the specified alteration lengths (LC, LCT/LMT) fit your cavity/core thickness and mounting height.