Korloy MGMN250-M PC9030 2.5mm Double-Ended Stainless Steel Grooving Insert (10pcs)
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The Original Korloy MGMN250-M PC9030 is a high-precision 2.5mm Double-Ended Grooving Insert specifically optimized for Stainless Steel and Difficult-to-Cut Materials. Featuring the industry-leading PC9030 PVD grade, this insert is designed to overcome the extreme heat and mechanical stress of machining Austenitic Stainless Steel (304, 316) and Super Alloys. The 2.5mm width offers enhanced structural stability compared to thinner inserts, making it perfect for deeper grooves and high-pressure cutting.
Superior Material Management: The MGMN250-M bridges the gap between material savings and tool rigidity. The PC9030 grade’s ultra-smooth PVD coating prevents Built-Up Edge (BUE), a common failure mode in stainless steel grooving.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN250-M |
| Insert Width (w) | 2.5 mm (+/- 0.03) |
| Grade | PC9030 (Premium Stainless Steel - PVD) |
| Target Materials | Stainless Steel (M), Heat Resistant Alloys (S) |
Core Performance Benefits:
- Enhanced Thermal Resistance: Specialized coating ensures the cutting edge stays sharp even under high-temperature friction.
- 2.5mm Rigid Profile: Minimizes tool vibration during deep radial plunging in tough alloys.
- Excellent Chip Control: The -M geometry curls chips effectively, preventing "bird-nesting" in deep grooves.
- Universal Versatility: While optimized for stainless steel, it also performs exceptionally well in low-carbon and alloy steels.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Stainless Steel (304/316) | 70 - 140 m/min | 0.06 - 0.14 mm/rev |
| Duplex Stainless Steel | 50 - 100 m/min | 0.05 - 0.12 mm/rev |
| Inconel / Titanium Alloys | 25 - 50 m/min | 0.04 - 0.10 mm/rev |
Compatible Tool Holders:
To maximize the efficiency of your 2.5mm insert, use the following high-precision holders:
- External Holders: MGEHR 1616-2.5 / 2020-2.5 / 2525-2.5
Stainless Steel Pro-Tip: PC9030 vs. PC5300
When grooving stainless steel, selecting the right coating is crucial for cost-per-part:
The Stainless Specialist. Optimized specifically for M-group materials. The coating is designed to handle chemical affinity and heat better than any other PVD grade.
The Universal Toughness. Great for interrupted cuts in steel. While it can cut stainless, it lacks the specific anti-built-up edge properties of PC9030.
Machinist's Pro Tip: For MGMN250-M PC9030 on 316 Stainless Steel, ensure you use a "peck grooving" cycle for deep cuts. This allows the coolant to reach the 2.5mm cutting zone and prevents the work-hardened material from damaging the insert during tool retraction.
Packaging: 10 pieces per box.
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