Mitsubishi TPGH110304L-FS AP25N | Left-Hand Cermet Turning Insert
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TPGH110304L-FS AP25N
Mitsubishi Materials | High-Speed Steel Finishing Cermet (Left-Hand)
Super-Finish Steel Machining
The Mitsubishi TPGH110304L-FS AP25N is a precision Left-Hand (L) Cermet turning insert designed for high-speed steel finishing. The AP25N Cermet grade utilizes a TiCN-based substrate that provides superior chemical resistance and prevents "Built-Up Edge" (BUE). Paired with the FS chipbreaker, it is the premier choice for precision CNC boring and turning where dimensional accuracy and a glossy, high-quality surface finish are required.
Advanced AP25N Cermet | 11° Positive Relief | FS Super-Finish Breaker
Technical Code Identification
Triangular Shape
11° Positive Relief
G-Tolerance Class
Cylindrical Hole
11mm Edge Length
3.18mm Thick
0.4mm Radius
Left-Hand
Finish Breaker
ISO (Metric) vs ANSI (Inch) Comparison
| Technical Spec | ISO Model (Metric) | ANSI Model (Inch) |
|---|---|---|
| Part Number | TPGH110304L-FS | TPGH 221L FS |
| Inscribed Circle (IC) | 6.35 mm | 0.250" (1/4") |
| Nose Radius | 0.4 mm | 0.016" (1/64") |
AP25N Cermet Technology
AP25N is an advanced TiCN-based Cermet. Because Cermet has a much lower affinity for steel than carbide, it resists chemical wear and heat build-up. This long-tail precision insert is ideal for maintaining tight tolerances and achieving mirror finishes that often eliminate the need for grinding.
FS "Super-Finish" Breaker
The FS chipbreaker features a specialized ultra-high positive rake angle. Optimized for low feed rates and shallow depths of cut, it forces chips to curl tightly and break away, ensuring the finished surface is not marred by chip scratching.
Recommended Cutting Parameters
| Material | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Carbon Steel (1045) | 150 - 350 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.0 mm |
| Alloy Steel (4140) | 120 - 300 m/min | 0.05 - 0.12 mm/rev | 0.1 - 0.8 mm |
REQUIRED LEFT-HAND HOLDERS
Designed for Left-Hand (L) tool paths. Optimized for use with standard STFPL 11 or STGPL 11 tool holders and boring bars.
Shop Boring Bars →
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This Mitsubishi 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.