Mitsubishi DCMT11T304 HTI10 Carbide Turning Insert for Aluminum & Copper
Mitsubishi DCMT11T304 AP25N Cermet Turning Insert for Mirror Finish (10pcs)
Mitsubishi DCMT11T302-MV VP15TF Carbide Turning Insert for Stainless & Alloy Steel
Mitsubishi DCMT11T302-MV US735 Carbide Turning Insert for Stainless Steel
Mitsubishi DCMT11T302-MV UE6020 Carbide Turning Insert for Steel Finishing
Mitsubishi DCMT11T302-MV AP25N Cermet Turning Insert for Fine Finishing
Mitsubishi DCMT11T302 US735 Carbide Insert for Stainless Steel (10pcs)
Mitsubishi DCMT11T302 UE6020 Carbide Turning Insert for Steel (10pcs)
Mitsubishi DCMT070208-MV VP15TF Carbide Insert for Stainless & Steel
Mitsubishi DCMT070208-MV US735 Carbide Turning Insert for Stainless Steel
Mitsubishi DCMT070208-MV UE6020 Carbide Turning Insert for Steel
Mitsubishi DCMT070208 NX2525 Cermet Turning Insert for High-Feed Finish (10pcs)
Mitsubishi DCMT070204-MV UE6110 Carbide Turning Insert for Steel
Mitsubishi DCMT070204-MV UE6020 Carbide Turning Insert for Steel
Mitsubishi DCMT070204-MV NX2525 Cermet Turning Insert for High-Gloss Finish
About Mitsubishi DC/DP 55° Diamond Turning Inserts
Mitsubishi Materials (三菱マテリアル) 55° diamond rhombic positive turning inserts offer a tighter approach angle than the standard 80° (CCMT) geometry, making them ideal for profiling, finishing, and slender shaft workpieces where reduced radial force and sharper cutting edges are critical. The 55° geometry is dimensionally interchangeable with every major insert manufacturer (Sandvik DCMT, Kennametal DCMT, Iscar DCMT, Walter DCMT) — a global industry standard for profiling and semi-finishing. The dominant family in this catalog is DCMT (55° rhombic, with hole, positive 7° clearance) with 50+ SKUs across 3 IC sizes and 8 grade families. CNCHome-Beyond is an authorized Mitsubishi distributor; orders placed before 3 PM China time ship same-day from our Hangzhou warehouse with DHL/UPS/FedEx express delivery in 3-7 business days.
Why 55° Diamond vs 80° Diamond?
| Property | 55° (DCMT) | 80° (CCMT) | Winner for 55° |
|---|---|---|---|
| Approach angle | 55° (acute) | 80° (obtuse) | 55° for profiling + slender shafts |
| Cutting edge sharpness | Sharper (acute) | More obtuse | 55° for finish + low cutting force |
| Radial force (Fr) | Lower (less radial load) | Higher | 55° for thin shafts (reduce deflection) |
| Axial force (Fa) | Higher | Lower | 55° for facing (more axial cut) |
| Cutting depth (ap) | Up to 0.6 × IC | Up to 0.5 × IC | 55° for deep cuts |
| Surface finish | Better (sharper edge) | Good | 55° for mirror finish |
| Chip control | Tighter (chip curls tighter) | Looser | 55° for small chip evacuation |
| Edge strength | Lower (acute edge) | Higher (obtuse) | 80° for heavy roughing |
When to choose 55° (DCMT) over 80° (CCMT): Use 55° when the operation involves profiling, slender shafts, or low radial force requirements. The acute 55° angle produces a sharper cutting edge that generates less radial force, making it ideal for finishing thin-walled workpieces, long slender shafts, and profiling complex contours. Use 80° for general-purpose turning where edge strength and roughing capability matter more. For most shops, both 55° and 80° are stocked — 55° for finishing/profiling, 80° for roughing/general.
Mitsubishi Grade Family Reference (8 Grades for DC 55°)
| Grade | Coating / Material | Workpiece | Recommended Speed | Best For |
|---|---|---|---|---|
| US735 | CVD (TiCN + thick Al2O3) | Stainless (M15-M35), steel heavy | 100-180 m/min | Stainless workhorse + steel heavy |
| NX2525 | CVD 2nd-gen + cermet | Steel (P10-P30) + cermet applications | 100-200 m/min | Steel + cermet mirror finish (NX = Next-gen) |
| VP15TF | PVD (Al-rich TiAlN, "Miracle Coat") | Universal (P10-P30, M10-M25, S05-S20) | 100-220 m/min | Universal workhorse, stainless + high-temp alloys |
| UE6020 | CVD (universal P-grade, lighter) | Steel (P10-P25) | 120-200 m/min | Steel finishing, low cutting force |
| UE6110 | CVD (universal P-grade, tougher) | Steel (P15-P35) | 100-180 m/min | Steel general purpose (workhorse) |
| UC5115 | CVD (K-grade) | Cast iron (K10-K25) | 150-300 m/min | Cast iron universal |
| HTI10 | Uncoated cermet-grade | Aluminum (N10-K20) | 300-1000 m/min | Aluminum + cast iron high-speed |
| AP25N | Cermet (TiCN-based) | Steel (P05-P15) | 180-300 m/min | Steel mirror-finish turning (Ra < 0.4 μm) |
For more details on Mitsubishi's grade naming convention (US/NX/VP/UE/UC/HTI/UTI/AP), see our Mitsubishi CC/CP 80° Diamond collection which has a complete grade decoder section.
Mitsubishi 55° Diamond Geometry at a Glance
| Series | IC Size | Type | Operation | Best For |
|---|---|---|---|---|
| DCMT | 0702 (6.35mm) / 11T3 (9.525mm) / 1504 (12.7mm) | 55° rhombic, with hole, positive 7° | Profiling, finishing, slender shafts | Mainstream 55° positive turning — 50+ SKUs |
| DCGT | 0702 / 11T3 | 55° rhombic, with hole, cermet precision (lapped) | Mirror finish steel, profiling, semi-finishing | Precision cermet inserts (L/R hand variants) |
| DCET | 0702 / 11T3 | 55° rhombic, with hole, cermet edge prep | Light profiling, small diameter turning | Specialty cermet edge (SMG/SN chip-breaker) |
Need to compare with other brand 55° diamond rhombic geometries? See our complete Insert Grade Cross-Reference Tool and SKU Cross-Reference for direct equivalents between Mitsubishi, Sandvik, Kennametal, Iscar, Walter, Tungaloy, Kyocera, KORLOY, and ZCC·CT.
Mitsubishi Chip-Breaker Reference (5 Variants for 55°)
55° diamond inserts use a similar chip-breaker naming convention to 80° but with some specialty variants for profiling:
| Chip-Breaker | Application | Feed | Best With Grade |
|---|---|---|---|
| FV (precision finishing) | Mirror finish, lowest cutting force | 0.03-0.10 mm/rev | NX2525 (cermet) / VP15TF |
| SV (semi-finishing) | Sharp edge, low force semi-finishing | 0.05-0.15 mm/rev | NX2525 / US735 |
| MV (medium general) | General purpose, balanced | 0.08-0.18 mm/rev | VP15TF / UE6020 / US7020 (workhorse) |
| FM (finishing medium) | Light finishing, balanced | 0.05-0.12 mm/rev | NX2525 / VP15TF |
| SMG / SN (DCGT specialty) | Precision cermet profiling + light finishing | 0.03-0.08 mm/rev | VP15TF (lapped DCGT only) |
How to Choose a Mitsubishi 55° Diamond Insert
Step 1: Match the geometry to the operation. For profiling, slender shafts, or finishing thin-walled workpieces, choose 55° DCMT. For general purpose turning on rigid workpieces, choose 80° CCMT instead. For mirror-finish precision turning, choose DCGT (cermet lapped). For specialty cermet edge prep, choose DCET.
Step 2: Match the grade to the workpiece material. Steel → UE6110 (workhorse) or NX2525 (cermet mirror finish). Stainless → US735 (CVD) or VP15TF (PVD Miracle Coat). Cast iron → UC5115 (universal). Aluminum → HTI10 (uncoated). High-temp alloys (Inconel, titanium) → VP15TF (PVD Al-rich).
Step 3: Match the chip-breaker to feed and depth of cut. Precision finishing (0.03-0.10 mm/rev) → FV. Semi-finishing (0.05-0.15) → SV. General purpose (0.08-0.18) → MV (most common). DCGT cermet profiling → SMG / SN.
Step 4: Match the insert to the tool holder. Mitsubishi DCMT fits industry-standard DCLNR/L (55° negative rake) and similar 55° positive tool holders. For profiling, use a 55° tool holder with reduced clearance for maximum edge support. CNCHome-Beyond carries compatible aftermarket holders at 30-50% below OEM — see our turning tool holder guide and Insert Holder Selector.
Compatible Tool Holders (Standard 55° Positive Rake)
Mitsubishi DCMT inserts fit the following CNCHome-Beyond tool holder families (all ISO 5610 standard, drop-in compatible with Mitsubishi OEM holders):
- Double-Clamp External Holders (DCLNR/L, PCLNR/L) — for heavy DCMT roughing
- Multi-Lock External Holders (MCLNR/L) — for general DCMT medium cutting
- Lever-Lock (P-Type) External Holders — for quick-change high-mix production
- Screw-Clamp Boring Bars (S...DCLNR/L, S...MCLNR/L) — for internal turning with positive inserts
Need help matching inserts to holders? Use our Insert Holder Selector Tool for a guided 3-step match, or contact us for a custom tool holder quote.
Cross-Brand Equivalents to Mitsubishi 55° Diamond
Mitsubishi 55° diamond rhombic insert geometries are dimensionally interchangeable with other major brands. Direct equivalents:
| Mitsubishi | Sandvik | Kennametal | Iscar | Kyocera |
|---|---|---|---|---|
| DCMT 11T308-MV VP15TF | DCMT 11T308-PM GC4325 | DCMT 11T308-HM KC7315 | DCMT 11T308-PM IC8150 | DCMT 11T308HQ CA6525 |
| DCMT 070204-MV US735 | DCMT 070204-PM GC4325 | DCMT 070204-HM KC7315 | DCMT 070204-PM IC8150 | DCMT 070204HQ CA6525 |
| DCMT 11T304-UC5115 | DCMT 11T304-KM GC3040 | DCMT 11T304-HM KCK20 | DCMT 11T304-PM IC5005 | DCMT 11T304HQ CA4505 |
| DCGT 11T304L-F VP15TF | DCGT 11T304-AL H10 | DCGT 11T304-LF K313 | DCGT 11T304-AL IC20 | DCGT 11T304AL CC6505 |
Looking for a Sandvik or Kennametal equivalent at lower cost? See Sandvik master catalog or KORLOY positive turning for direct alternatives. Use our Insert Grade Cross-Reference Tool for grade-to-grade equivalents across 17+ brands.
Featured Bestsellers (16 SKUs across 3 geometry families)
Browse a representative selection from our 64-SKU catalog below, organized by geometry and grade. All featured inserts are in stock and ship same-day from Hangzhou. Click any part number to view detailed specs, grade composition, and recommended cutting parameters.
DCMT Series — 55° Rhombic with Hole (Featured: 10 SKUs)
The DCMT is Mitsubishi's main 55° diamond turning geometry. Three IC sizes (0702 / 11T3 / 1504) cover everything from small lathe work to standard medium turning. The 7° positive clearance reduces radial force for profiling slender workpieces.
- DCMT11T304 VP15TF - 9.5mm IC (0.4mm nose), no CB, PVD Miracle Coat universal (workhorse)
- DCMT11T308 VP15TF - 9.5mm IC (0.8mm nose), no CB, PVD Miracle Coat (most popular)
- DCMT11T304 US735 - 9.5mm IC, no CB, CVD stainless heavy
- DCMT11T304 UE6020 - 9.5mm IC, no CB, CVD steel finishing
- DCMT11T304 UE6110 - 9.5mm IC, no CB, CVD steel workhorse
- DCMT11T304 UC5115 - 9.5mm IC, no CB, CVD cast iron
- DCMT11T304 NX2525 - 9.5mm IC, no CB, cermet mirror finish
- DCMT11T304-FM VP15TF - 9.5mm IC, FM finishing, PVD universal
- DCMT070204 VP15TF - 6.35mm IC, no CB, PVD universal (small lathe)
- DCMT150404 UE6110 - 12.7mm IC, no CB, CVD steel (medium lathe)
DCGT Series — 55° Cermet Precision (Featured: 3 SKUs)
The DCGT is Mitsubishi's cermet-grade 55° insert with precision lapped/polished cutting edge. The "G" indicates cermet construction. Used for mirror-finish steel and precision profiling on small workpieces.
- DCGT11T302L-F VP15TF - 9.5mm IC, L-F precision left, PVD (mirror)
- DCGT11T304R-F VP15TF - 9.5mm IC, R-F precision right, PVD (mirror)
- DCGT070204L-F NX2525 - 6.35mm IC, L-F precision, cermet (mirror)
DCET Series — 55° Cermet Edge Prep (Featured: 3 SKUs)
The DCET is Mitsubishi's cermet edge-prepped 55° insert for light profiling and small diameter turning. The "E" indicates edge preparation for tougher cuts than standard DCGT.
- DCET11T304R-SN VP15TF - 9.5mm IC, R-SN edge, PVD (small diameter)
- DCET070202R-SN VP15TF - 6.35mm IC, R-SN, PVD (small lathe)
- DCET070202L-SN VP15TF - 6.35mm IC, L-SN, PVD (small lathe)
Frequently Asked Questions
What is the difference between 55° DCMT and 80° CCMT Mitsubishi inserts?
Both are positive turning inserts with the same 7° clearance angle, but with different point angles: 55° (DCMT) has an acute 55° point that produces a sharper cutting edge and lower radial force, making it ideal for profiling, finishing, and slender shaft workpieces. 80° (CCMT) has an obtuse 80° point that produces a stronger edge for general purpose turning and roughing. The 55° geometry allows deeper cuts (up to 0.6 × IC) while the 80° geometry has a shallower maximum depth (0.5 × IC). Use 55° DCMT for profiling/finishing; use 80° CCMT for general/roughing.
What is the difference between DCGT and DCET cermet inserts?
Both are cermet-grade 55° inserts for precision work. DCGT has a standard precision lapped edge for mirror finishing and light profiling. DCET has a stronger edge preparation (honed edge) for tougher cuts on cermet — can handle light interrupted cuts and higher feed rates than DCGT. Use DCGT for finishing (sharp edge, mirror surface); use DCET for light profiling (slightly stronger edge, less mirror surface but more durable).
What is the equivalent of Mitsubishi DCMT 11T308-MV VP15TF in other brands?
Mitsubishi DCMT 11T308-MV VP15TF is the industry-standard 55° diamond rhombic positive turning insert (9.525mm IC, 0.8mm nose, MV medium chip-breaker, VP15TF PVD Miracle Coat universal grade). Direct equivalents: Sandvik DCMT 11T308-PM GC4325, Kennametal DCMT 11T308-HM KC7315, Iscar DCMT 11T308-PM IC8150, Kyocera DCMT 11T308HQ CA6525, ZCC·CT DCMT070204-MV YBG202. All are dimensionally interchangeable on the same external 55° tool holder. For grade cross-reference, see our Insert Grade Cross-Reference Tool.
When should I use 55° vs 35° diamond vs round inserts?
Different approach angles suit different operations: 35° (VBMT/VBGT) = very shallow approach for profiling, weak edges — used for thin walls and complex contours. 55° (DCMT) = medium approach for profiling and finishing, moderate strength — most versatile. 80° (CCMT) = obtuse approach for general turning, strong edge — most popular for general turning. Round (RCMT/RDMT) = strongest edge for roughing, but generates radial force. Most shops stock 55° and 80° as their primary geometries. Add 35° or round for specialized operations.
What is the difference between VP15TF and NX2525 grades in 55° DC inserts?
Both are popular Mitsubishi grades for DC inserts, but optimized differently. VP15TF is a PVD-coated grade (Al-rich TiAlN, "Miracle Coat") for universal applications including stainless and high-temp alloys. The thin PVD coating keeps the edge sharp. NX2525 is a CVD second-generation steel grade with cermet options for mirror finish at high speeds. Use VP15TF for steel + stainless + Inconel mixed-material work; use NX2525 for steel mirror finishing (Ra < 0.4 μm).
What is the minimum order quantity for Mitsubishi DC 55° diamond inserts?
Sample orders start at 1 piece for grade validation. Standard production orders are 10-50 pieces per item. Bulk pricing tiers: 2-9 pieces 6% off, 10+ pieces 12% off (auto-applied at checkout). For custom IC sizes, chip-breakers, or grades not in our standard catalog, MOQ is 200 pieces with 6-8 week lead time from Mitsubishi Japan. See our warranty and return policy for details on grade validation samples.
Related Mitsubishi Collections
Order Mitsubishi 55° Diamond Turning Inserts or Request a Quote
Need a grade, chip-breaker, or geometry not in our standard catalog? Send us a part number, grade spec, and quantity — we will return a formal quote within 24 hours. Custom Mitsubishi geometries available on 6-8 week lead time from Japan.
CNCHome-Beyond — Authorized Mitsubishi Distributor. Genuine OEM product from Mitsubishi Materials Corporation, full lot traceability, same-day dispatch from Hangzhou for orders placed before 3 PM China time.
Want to know more about Mitsubishi 55° vs 80° diamond selection, Miracle Coat grades, or DCGT cermet precision? Read our CNC tooling knowledge base or check the complete cross-reference tool for grade-to-grade equivalents.