Dicoat Treatment Shoulder Punches

Dicoat-treated shoulder punches are used in punch-and-die sets where heavy-load forming demands long service life and stable punch guidance. The single-stepped shank design helps maintain consistent seating and alignment in the press, reducing wobble during repeated strikes.

• Automotive bracket and connector forming: Ideal for shearing and piercing operations that require dependable wear resistance at the punch tip while preserving overall punch geometry across production runs.
• Industrial metal stamping: Suitable for thick-sheet blanking and secondary forming steps where the shoulder area and shank interface experience high mechanical stress.
• Appliance and enclosures: Works well for punching housings and structural parts using interchangeable tip shapes (round/rectangle/oblong/radius rectangle) to match cavity geometry and hole profiles.

Choose this variant when you need Dicoat-enhanced wear performance plus a shank system designed for repeatable positioning in tool stations.

These shoulder punches are offered in two steel/material families with different wear–toughness characteristics. SKD11 equivalent (D2) is a high-carbon, high-chromium tool steel (often associated with AISI D2) that delivers strong wear resistance for many punching applications. SKH40 equivalent powdered high-speed steel provides high hot hardness and excellent abrasion behavior, which is beneficial when operating under sustained load and edge wear demands.

• Hardness (HRC): Not specified in the provided data; final hardness will depend on the supplied condition and the manufacturer’s heat treatment for each option.
• Heat treatment state: Dicoat-treated surface is specified; base steel heat treatment condition is not provided in the data.

In practice, SKD11/D2 is commonly selected when you prioritize dimensional stability and cost-effective wear performance, while SKH40 powdered HSS is preferred where higher resistance to abrasive wear and toughness under demanding cutting conditions are required.

Select the punch based on the tip (working) dimensions first, then verify shank fit to the tool holder and punch plate.

• Shank diameter D: Available from 3 ~ 25 mm with shank diameter tolerance of +0.005/0 (m5). Match this to the guide/bushing or mating hole in the press tooling so the clearance remains within your intended fit class.
• Tip dimensions P: 1 ~ 18 mm. Use the appropriate tip shape (Round, Rectangle, Oblong, Double Flatted Round, Radius Rectangle) to match the hole profile and corner radius requirements of the cavity.
• Tip length / head geometry: Tip length options are indicated as B (L, S, X), and the L (L dimension) = 40 ~ 70 mm should be chosen to suit the required protrusion and stack height.
• Total length alteration LC: Ranges vary by configuration (e.g., 27 ~ 79.9, 27 ~ 99.9, 32 ~ 79.9, 32 ~ 99.9, 35 ~ 99.9).

For a controlled assembly, confirm the allowable length variation via LCT and LMT ranges supplied for your chosen configuration so head thickness and total length remain within your tool’s tolerance chain.