Korloy MGMN300-G PC9030 3mm Double-Ended Stainless Steel Grooving Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
The Original Korloy MGMN300-G PC9030 is a heavy-duty 3.0mm Double-Ended Grooving Insert engineered for maximum efficiency in Stainless Steel and Heat-Resistant Alloys. When machining tough materials like 304, 316, or Titanium, standard CVD coatings often fail due to chip welding and edge chipping. The PC9030 PVD grade features a specialized TiAlN nano-coating with a low friction coefficient, ensuring that chips slide off the 3mm edge without sticking, even in deep radial grooving and high-load parting-off operations.
Superior Thermal Management: The 3.0mm width provides an excellent heat sink for the cutting edge. Combined with the high-temperature resistance of the PC9030 coating, this insert maintains its hardness even during prolonged cuts in work-hardening stainless steels.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-G |
| Insert Width (w) | 3.0 mm |
| Grade | PC9030 (Premium PVD for Stainless) |
| Chipbreaker | -G (Reinforced Universal Geometry) |
Core Performance Benefits:
- Maximum Edge Reliability: The -G geometry is reinforced to handle the high cutting forces required for large diameter stainless steel parting.
- Anti-Adhesion Technology: Specifically designed to prevent Built-Up Edge (BUE), which is the primary cause of poor surface finish in stainless machining.
- Double-Ended Economy: Two sharp, usable cutting edges per insert provide a high return on investment.
- Exceptional Rigidity: The 3mm width offers superior lateral strength, preventing tool "walking" or deflection during radial plunging.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Stainless Steel (304/316) | 80 - 160 m/min | 0.08 - 0.20 mm/rev |
| Duplex Stainless Steel | 50 - 100 m/min | 0.06 - 0.15 mm/rev |
| Titanium Alloys | 40 - 80 m/min | 0.05 - 0.12 mm/rev |
Compatible Tool Holders:
Pairs with all standard 3.0mm MGEHR/L and internal MGIVR tool bars:
- External Holders: MGEHR 1616-3 / 2020-3 / 2525-3
- Internal Holders: MGIVR 2016-3 / 2520-3
Choosing the Grade: PC9030 vs. NC3120
The 3.0mm width is used for both steel and stainless, but the grade choice is vital:
The Stainless Specialist. PVD coating. Sharper edge. Best for 300-series stainless, titanium, and any material that is "sticky" or gummy.
The Steel Specialists. CVD coating. Best for carbon steel, alloy steel, and cast iron where high-speed wear resistance or heavy shock is needed.
Machinist's Pro Tip: For the MGMN300-G PC9030, if you are parting-off 304 stainless steel tubing, ensure your center height is perfect. Because stainless steel work-hardens instantly, a tool set too low will rub and burn out the PC9030 coating prematurely.
Packaging: 10 pieces per box.
Korloy MGMN300-G PC9030 price, 3mm grooving insert for 304 stainless steel, best parting tool for 316L stainless, MGMN300-G speed and feed for Titanium, PVD coated 3.0mm grooving insert