Sandvik Coromant TNMG 16 04 08-QM 4425 Carbide Turning Insert（10pcs）
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TNMG 16 04 08-QM 4425
Premium Steel Turning Insert | T-Max® P Geometry
Product Overview
The Sandvik Coromant TNMG 16 04 08-QM 4425 is a high-performance triangular carbide insert designed for medium machining applications in steel (P-class). Part of the T-Max® P family, this insert utilizes the cutting-edge GC4425 Grade with Inveio® coating technology for unmatched wear resistance and tool life.
Metric vs Inch Reference:
| System | Designation |
|---|---|
| Metric (ISO) | TNMG 16 04 08-QM |
| Inch (ANSI) | TNMG 332-QM |
Technical Details
- Grade: 4425 (Advanced Inveio® Technology for Steel)
- Chipbreaker (Geometry): QM (Optimized for Medium Machining)
- Shape: Triangular (60-degree)
- Coating: Ti(C,N) + Al2O3 + TiN
- Compatible Tool Holders: View compatible TNMG 1604 Tool Holders
Grade & Geometry Deep Dive
Grade 4425: Specifically engineered for steel turning, this grade offers superior thermal protection and crater wear resistance. It's the industry standard for stable and predictable performance in large batch production.
QM Geometry: The "QM" chipbreaker is a versatile geometry for medium-duty steel turning. It balances low cutting forces with excellent chip control, preventing "bird-nesting" even at varying depths of cut.
Recommended Cutting Parameters
| Parameter | Metric Value | Inch Value |
|---|---|---|
| Cutting Speed (vc) | 200 - 450 m/min | 655 - 1475 sfm |
| Feed Rate (fn) | 0.15 - 0.40 mm/rev | 0.006 - 0.016 in/rev |
| Depth of Cut (ap) | 0.5 - 4.0 mm | 0.020 - 0.157 in |
*Values may vary based on workpiece material hardness and machine stability.
Pro Tip: Grade Comparison
Looking for more heat resistance? Choose 4415 for continuous cuts at higher speeds. Dealing with interrupted cuts or heavy vibrations? Switch to 4425 for a perfect balance of toughness and wear resistance. For extremely unstable conditions, consider 4335.
Need Help With Sandvik Inserts?
Looking for a Sandvik equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This Sandvik insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.