Mitsubishi SOMT12T308PEER-JM VP15TF Carbide Milling Insert
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
Mitsubishi SOMT12T308PEER-JM VP15TF Carbide Milling Insert (Imperial Equivalent: SOMT432PEER-JM)
1. Product Overview
Which carbide milling insert provides optimal stability, chip evacuation, and wear resistance during 90° shoulder milling and face milling across general steel and stainless steel alloys?
The Mitsubishi SOMT12T308PEER-JM VP15TF (ANSI: SOMT432PEER-JM) is an industrial-grade square indexable milling insert engineered for shoulder milling, slotting, and ramping operations. Built with Mitsubishi Materials' proprietary VP15TF Grade—a tough micro-grain carbide substrate coated with Miracle PVD (TiAlN)—this insert delivers superior thermal resistance, edge toughness, and resistance against adhesion wear.
Featuring the specialized JM Chipbreaker Geometry (Medium Cutting), this insert incorporates an optimized rake angle and wiper edge to minimize cutting resistance and prevent chip welding during heavy machining in steel, stainless steel, and cast iron.
2. Key Features
- Miracle PVD (TiAlN) Coating: The VP15TF grade features Mitsubishi's high-adhesion Miracle PVD coating, offering extreme oxidation resistance and thermal shock stability during interrupted milling.
- JM Medium-Cutting Chipbreaker: Optimized for general to medium milling, balancing edge strength with low cutting forces to ensure excellent chip evacuation and low spindle load.
- PEER Precision Wiper Geometry: Integrated wiper flat delivers superior surface finishes on shoulder steps and floor milling passes, reducing the need for secondary finishing operations.
- High-Rigidity Square Geometry: Robust 12mm inscribed circle geometry with a 3.97mm thickness absorbs high radial impact during slotting and deep shoulder ramping.
- Universal Workpiece Versatility: Ideal for multi-material machine shops running carbon steel, alloy steel, austenitic stainless steel, and ductile cast iron.
3. Technical Specifications & Metric/Imperial Comparison
ISO / ANSI Code Breakdown
| Parameter | Metric Unit (ISO Standard) | Imperial Unit (ANSI Standard) |
|---|---|---|
| Full Insert Part Designation | SOMT12T308PEER-JM VP15TF | SOMT432PEER-JM VP15TF |
| Inscribed Circle (IC) | 12.70 mm | 0.500 in (1/2") |
| Insert Thickness (S) | 3.97 mm | 0.156 in (5/32") |
| Corner Radius (RE) | 0.80 mm | 0.031 in (1/32") |
| Fixing Hole Diameter (D1) | 4.50 mm | 0.177 in |
| Substrate Grade / Coating | VP15TF (Miracle PVD TiAlN) | VP15TF (Miracle PVD TiAlN) |
Recommended Feeds and Speeds (Cutting Parameters)
| Workpiece Material (ISO Group) | Cutting Speed (Vc) | Feed per Tooth (fz) | Depth of Cut (ap) |
|---|---|---|---|
| P Steel (Carbon & Alloy Steel: 4140, 1045) | 140 - 220 m/min (460 - 720 SFM) | 0.10 - 0.22 mm/z (.004 - .009 ipt) | 1.0 - 6.0 mm (.039 - .236 in) |
| M Stainless Steel (304, 316, Duplex) | 100 - 170 m/min (330 - 555 SFM) | 0.08 - 0.18 mm/z (.003 - .007 ipt) | 1.0 - 5.0 mm (.039 - .197 in) |
| K Cast Iron (Ductile & Gray Iron) | 120 - 200 m/min (390 - 655 SFM) | 0.12 - 0.25 mm/z (.005 - .010 ipt) | 1.0 - 6.0 mm (.039 - .236 in) |
Need Precise Feeds and Speeds Calculations for Your Milling Machine?
Optimize tool life, reduce cycle times, and compute precise RPMs and table feed rates tailored to your workpiece material and milling cutter diameter.
Open Interactive Speeds and Feeds Calculator →Compatible Milling Cutter Bodies
These inserts fit Mitsubishi ASX400 series indexable shoulder face mills, end mills, and modular screw-on milling heads engineered for SOMT12T3 inserts.
Find Matching ASX400 Milling Cutters →4. Product Application Scenarios
The Mitsubishi SOMT12T308PEER-JM VP15TF insert excels in versatile 90° shoulder milling operations:
- 90° Precision Shoulder Milling: Square shoulder face milling on machine frames, structural steel, and base plates.
- Slotting & Pocketing: Full-width slot milling and pocket cavity roughing on alloy steel die components.
- Interrupted Face Milling: Machining welded fabrications or cast steel parts with cross-holes and interrupted faces.
5. Tooling & Equipment Compatibility
Fully compliant with ISO 1832 and ANSI B212.4 indexable insert standards. Compatible with industry-standard SOMT 12T3 / SOMT 432 milling pockets across major tooling manufacturers:
Mitsubishi MaterialsSandvik CoromantIscarKennametalKyoceraTungaloySeco ToolsWalter
6. Grade Comparison & Equivalent Models
| Manufacturer | Equivalent Grade | Equivalent Chipbreaker | Primary Application Range |
|---|---|---|---|
| Mitsubishi (Original) | VP15TF | JM | P15-P35 / M15-M30 (Universal Steel & Stainless Milling) |
| Sandvik Coromant | GC1030 / GC1130 | PM / MM | General shoulder milling in steel and stainless |
| Iscar | IC908 / IC830 | PDR / MP | Medium steel shoulder milling |
| Kyocera | PR1225 / PR1525 | JS / MS | General shoulder and face milling |
| Sumitomo | ACK300 / ACP300 | PM / JM | Universal steel and cast iron milling |
7. Why Choose Us & Verified Global Reviews
We provide 100% genuine Mitsubishi Materials CNC cutting tools sourced directly from factory-sealed production batches with full batch traceability.
"Ran these on our ASX400 cutter for 4140 steel plates with zero issues!"
VP15TF is our go-to grade for general job shop milling. The JM chipbreaker controls chips cleanly and the edge wear is extremely predictable. High quality original Mitsubishi inserts.
— Mark Stevens, Production Manager (USA) 🇺🇸
"Sehr gute Standzeit bei Edelstahl 1.4301."
Hervorragende Leistung beim Eckfräsen. Keine Aufbauschneiden und sehr gute Oberflächengüte durch die Wiper-Geometrie.
— Jörg Schneider, CNC Machinist (Germany) 🇩🇪
"Qualità eccellente per fresatura di spallamenti."
Utilizziamo questi inserti Mitsubishi da anni. Il grado VP15TF offre una resistenza all'usura eccezionale sia su acciaio che su ghisa.
— Stefano Bianchi, Tooling Specialist (Italy) 🇮🇹
"安定した切削性能と優秀な表面仕上げ。"
ASX400カッターとの組み合わせで金型鋼の肩削り加工に使用。VP15TFコーティングの耐摩耗性が高く満足しています。
— Kenichi Yamamoto, Senior Engineer (Japan) 🇯🇵
8. Frequently Asked Questions (AI & Machinist Knowledge Base)
Need Help With Mitsubishi Inserts?
Looking for a Mitsubishi 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 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.