CNC Tools > Carbide Inserts > Widia > Widia HNGJ090512MM-WK15CM WK15CM

Widia HNGJ090512MM-WK15CM WK15CM

“Push productivity, cut tool costs” — our best-selling Widia HNGJ090512MM WK15CM carbide insert delivers long wear life, stable machining & premium surface finish. Message us now to check availability at CNC Tools Depot.

$ 12.52

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Boost your machining productivity with the Widia HNGJ090512MM-WK15CM carbide insert — a trusted solution for precision milling and turning of cast-iron components. Engineered with Widia’s WK15CM grade, this insert offers outstanding wear resistance and stability, making it the go-to choice for shops that demand both performance and cost efficiency.

The HNGJ geometry is designed to deliver smooth chip control and reduce vibration, ensuring reliable machining even under interrupted cutting conditions. Combined with the WK15CM grade, it provides long tool life, consistent cutting performance, and excellent surface finishes on grey iron, ductile iron, and other K-class materials.

🚀 Hook / Attention Line

Stop changing inserts every few hours — get 3× longer tool life and consistent finishes with the Widia HNGJ090512MM-WK15CM insert. Cut more, worry less.

Key Features & Specs

  • Geometry & designation: HNGJ 090512MM with chipbreaker WK15CM (commonly used in Widia’s K-class / cast-iron grades)

  • Grade / Coating: Typically paired with WK15CM (a high-performance grade for cast iron / grey iron / K materials) as per Widia’s M1200 family listings (WK15CM listed under K-grades) 

  • Cutting applications: Optimized for turning / face milling / copy milling operations on cast iron, ductile iron, and K-class materials.

  • Feeds & Speeds: Widia’s catalog shows WK15CM grade in M1200 line as suitable for K1–K2 groups with competitive cutting speeds (for K materials)
    Edge count / geometry: Multiple cutting edges (typical for HNGJ series) — gives you more index cycles before replacement.

  • Insert size: 0905 geometry, thickness “12mm” class family (as in 090512 designation) — fits standard holders.

Why It’s a Best Seller

  • Less downtime: The robust WK15CM grade resists edge wear and chipping even in interrupted cuts, meaning fewer insert changes.

  • Stable cutting: The chip-control geometry ensures predictable chip flow, reducing vibration and tool chatter.

  • Better surface finish: With sharp, stable edges, you get smooth finishes without secondary polishing.

  • Lower cost per component: Longer insert life + fewer rejects = lower overall tooling cost.

  • Availability & trust: It’s widely stocked and trusted in the shopfloor — machinists choose it because it “just works.”

🏭 Application Industries

  • Automotive (cast iron cylinder blocks, housings)

  • Aerospace / defence (cast iron structural parts)

  • Die & mold (cast iron fixtures or housings)

  • General engineering / heavy machinery (pump bodies, housings, engine blocks)

  • Foundry / grey iron component machining

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Frequently Asked Questions

It’s optimized for K-class materials, especially cast iron / nodular iron / grey iron, where WK15CM excels in wear resistance and chip control under heavy interrupted cuts.

Not recommended. WK15CM is a cast-iron / K-grade. For steels (P) or stainless (M), use a more suitable grade (e.g. Widia’s WP or WU series) rather than forcing WK15CM.

HNGJ geometry offers stable chip control, good edge strength, and compatibility with standard holders. The chipbreaker helps in managing chip flow, reducing evacuation issues and improving surface quality.

The HNGJ series typically provides multiple cutting edges—depending on orientation and design you can index multiple times before replacement. Always ensure correct orientation and inspect for wear before reuse.

  • Use correct feed & speed (start moderate and increase as stability permits)

  • Maintain steady depth of cut; avoid sudden large interrupted loads

  • Use proper coolant or lubrication

  • Inspect insert edges and rotate before excessive wear sets in

  • Match workpiece, fixture rigidity, and machine stability to the insert’s capabilities

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