Korloy CCMT09T304-HMP NC6315

Korloy CCMT09T304-HMP NC6315 is a K15 series, CVD-coated rhombic carbide insert optimized for cast iron turning. Delivers better wear, chipping resistance, and stable tool life in high feed or interrupted cuts. Ideal for automotive, die & mold, general engineering.

$ 2.80 $ 3.50 MRP

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Korloy CCMT09T304-HMP NC6315 – High-Performance Carbide Insert for Cast Iron Turning

The Korloy CCMT09T304-HMP NC6315 is a premium carbide insert engineered for cast iron machining. Designed with a rhombic CCMT geometry and an HMP chip breaker, it ensures stable chip control, reduced cutting resistance, and excellent edge strength under both continuous and interrupted cuts.

Hook / Attention Line

“Run one more shift without tool change — reduce cost per component with the Korloy CCMT09T304-HMP NC6315 insert.”

Body / Key Points

Meet one of our bestsellers at CNC Tools Depot — the Korloy CCMT09T304-HMP NC6315.
Here’s why it’s turning heads (and parts) on shop floors:

Key Features & Specs:

Geometry / Shape / Chip Breaker: Rhombic (CCMT) shape, with “HMP” chip breaker design for medium cutting in cast iron machining.
Grade / Coating: K15 series, CVD coated. Delivers strong wear resistance, anti-chipping, and resistance to built-up edge in cast iron work.
Substrate / Layering: Optimized functional substrate combining hardness and toughness, plus alumina and titanium layers to resist flaking and fracture.
Cutting Applications: Primarily for turning cast iron (gray, ductile). In heavy interrupted, high feed, or continuous conditions it holds stable performance.
Recommended Cutting Conditions (for cast iron):
• Medium mode (MK chip breaker): depth of cut ~1.0–2.5 mm, feed ~0.1–0.35 mm/rev
• Rough / interrupted (RK or “-HMP” style): suitable for more aggressive cuts, strong edge support under vibration

Why It’s a Bestseller

Less downtime — longer edge life even in interrupted cuts means fewer insert changes.
Stable tool life — reduced variation between edges, meaning your process is more predictable.
Better surface finish — optimized blade design & chip breaker reduce chatter, improve part surface quality.
High wear & chipping resistance — especially in cast iron, a common pain point in inserts.
Edge robustness against vibration / intermittent cut — chip breaker and substrate design help resist edge breakage in real-world conditions.

Application Industries:

This insert shines in sectors such as:

Automotive (cast iron parts, engine blocks, housings)
Aerospace (components with cast iron housings)
Die & Mold (cast iron molds, housings)
Heavy Machinery / General Engineering (pumps, gear cases, cast iron structural parts)

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