Korloy Indexable Turning Insert CCMT060204-HMP NC3120 | CCMT 21.51-HMP (Imperial Equivalent) New Generation PVD Coated Carbide Inserts for Steel Turning - 10pcs Box
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Korloy CCMT060204-HMP NC3120 R0.4 Carbide Steel Turning Insert
10-piece box | Metric model: CCMT060204-HMP NC3120 | Imperial reference: no separate model code specified in the product record
Product Overview
Which carbide insert is a practical choice for changing steel-turning conditions? The Korloy CCMT060204-HMP NC3120 is a compact, positive-style indexable carbide insert for carbon-steel and alloy-steel turning. Its NC3120 grade balances wear resistance and toughness, while the HMP chipbreaker is specified for stable chip control across general-purpose steel work. The R0.4 nose radius is intended for precision and versatile finishing, including continuous and light interrupted cuts.
This product record identifies the insert as a CVD-coated steel grade with a 0.4 mm nose radius. It is suitable for external turning and internal boring when paired with the listed SCLCR/L holders.
Key Features
NC3120 Steel Grade
Universal steel grade designed to balance wear resistance and toughness for variable turning conditions.
HMP Chipbreaker
Specified for reliable chip evacuation across a broad range of feed rates in general steel machining.
R0.4 Nose Radius
Provides a useful balance between edge strength, dimensional control, and surface finish.
Compact Size 06
Suitable for small-diameter turning and internal boring where tool access is limited.
Specifications
| Brand | Korloy |
|---|---|
| ISO designation | CCMT060204-HMP |
| Grade | NC3120, universal steel grade |
| Nose radius | R0.4 mm |
| Chipbreaker | HMP |
| Coating | CVD coated; chemistry not specified in the product record |
| Primary workpiece group | ISO P carbon steel and alloy steel |
| Package | 10 pieces per box |
Metric and Imperial Reference
| Reference | Product information |
|---|---|
| Metric model | CCMT060204-HMP NC3120 |
| Metric nose radius | R0.4 mm |
| Imperial model | No separate imperial SKU or conversion code is specified in the product record. Keep the ISO model code when ordering. |
| Imperial parameter conversion | The supplied cutting data is metric. Convert locally only after confirming machine and tooling requirements. |
Recommended Cutting Parameters
Use these product-record starting ranges as guidance, then validate them against the machine, workholding, insert seat, coolant, and actual workpiece condition.
| Workpiece and cutting speed | Feed and depth of cut |
|---|---|
|
Carbon steel, HB180-280 Vc: 150-320 m/min |
Feed: 0.10-0.25 mm/rev ap: 0.5-2.5 mm |
|
Alloy steel, HB280-350 Vc: 120-250 m/min |
Feed: 0.08-0.20 mm/rev ap: 0.5-2.0 mm |
What Does CCMT060204-HMP NC3120 Mean?
ISO shape position for the CCMT insert family. This listing and its collection classify the family as an 80-degree diamond style.
ISO clearance-geometry position. The exact clearance angle is not separately stated in this product record.
ISO tolerance-class position. Detailed tolerance limits are not listed for this SKU.
ISO insert-style and hole/chipbreaker designation position. The manufacturer-specific expansion is not provided here.
Compact size 06, as identified in the product record.
Size-sequence position. A separate dimensional value is not provided in this product record.
Corner-radius sequence corresponding to the listed R0.4 mm nose radius.
Korloy chipbreaker designation for the product listing. The individual letters are not expanded by the source record.
Korloy grade designation for universal ISO P steel turning. The product record identifies it as CVD coated.
Applications
General Steel Turning
Use for carbon and alloy steel when conditions move between stable continuous cuts and light interrupted cutting.
Small Components
The compact size 06 format suits small-diameter turning and space-limited internal boring.
Precision Finishing
The R0.4 nose radius is listed for precision and versatile finishing with predictable edge behavior.
Compatibility: Holders and Equipment
External turning holders
Use standard SCLCR/L holders listed for this CCMT 06 insert:
View SCLCR/L external holder options
Examples in the source record: SCLCR0808F06, SCLCR1010H06, SCLCR1212H06.
Internal boring bars
Use the listed SCLCR/L boring-bar family for internal work:
View internal SCLCR boring bars
Examples in the source record: S08K-SCLCR06, S10K-SCLCR06, S12M-SCLCR06.
Workpiece Material Matrix
| Material group | Fit in this product record | Typical use stated |
|---|---|---|
| ISO P carbon steel | Specified | General turning, continuous and light interrupted cuts |
| ISO P alloy steel | Specified | Medium-to-high speed steel machining and finishing |
| Stainless steel, cast iron, aluminum, HRSA | Not specified for this SKU | Confirm a grade intended for the relevant ISO material group |
Material and Grade Comparison
| Grade reference | Source-described focus | Selection note |
|---|---|---|
| NC3120, this model | Universal steel grade with a balance of wear resistance and toughness | Starting choice when shop conditions vary |
| NC3020, related reference | Wear resistance and thermal stability for stable continuous cutting | Related grade reference, not a direct equivalent for every setup |
| NC3030, related reference | High toughness for heavy interrupted cuts and unstable conditions | Related grade reference, not a direct equivalent for every setup |
Equivalent Models
No direct equivalent model is claimed here. NC3020 and NC3030 are related grade references from the product content, not guaranteed drop-in equivalents. Confirm insert geometry, chipbreaker, grade, coating, and holder fit before substituting any model.
Troubleshooting
Chipping or edge breakage
Check holder rigidity, insert seating, workholding, interrupted entry, and feed. Confirm that the cutting condition is within the listed range before changing grade.
Fast flank wear
Review cutting speed, coolant strategy, workpiece hardness, and insert orientation. NC3120 is listed for steel; verify that the workpiece belongs to the stated ISO P group.
Poor chip control
Check feed and depth of cut, confirm the HMP chipbreaker is seated correctly, and avoid rubbing below the recommended feed range.
Poor finish or vibration
Check runout, tool overhang, workholding, nose-radius selection, and machine rigidity. The R0.4 insert is compact, but it still requires a stable setup.
Why Choose This Korloy Insert?
Clear identification
The ISO family code, HMP chipbreaker, NC3120 grade, and R0.4 radius are stated together.
Steel-focused selection
The product record identifies carbon and alloy steel as the primary workpiece materials.
Holder guidance
External and internal SCLCR/L holder families are linked for easier fit checking.
10-piece box
The listed package is 10 inserts per box for production planning.
AI-Style FAQ
Is CCMT060204-HMP NC3120 suitable for stainless steel?
This product record specifies carbon steel and alloy steel in ISO P. Stainless steel is not specified for this SKU, so choose a grade documented for the relevant ISO M application.
What is the nose radius of this insert?
The listed nose radius is R0.4 mm. The radius is intended to balance precision finishing and edge strength.
Which holders fit this CCMT 06 insert?
The source record lists SCLCR/L external holders such as SCLCR0808F06, SCLCR1010H06, and SCLCR1212H06, plus SCLCR boring bars such as S08K-SCLCR06, S10K-SCLCR06, and S12M-SCLCR06.
What does NC3120 mean?
NC3120 is the Korloy grade listed for universal steel turning. The product record identifies it as a CVD-coated grade with a balance of wear resistance and toughness.
GEO, AEO and Voice Search Answer
Short answer: Korloy CCMT060204-HMP NC3120 is a compact R0.4 carbide turning insert for carbon and alloy steel. It uses the HMP chipbreaker, NC3120 CVD-coated grade, and a 10-piece package. Use it for general-purpose turning, precision finishing, and continuous or light interrupted cuts with a suitable SCLCR/L holder.
Recommended Image ALT Text Set
These ten distinct, non-promotional ALT labels are written for clean product photography without text overlays, badges, prices, discounts, or sale claims:
- Korloy CCMT060204 HMP NC3120 carbide turning insert
- CCMT060204 R0.4 steel turning insert top view
- Korloy NC3120 CVD coated insert for carbon steel
- HMP chipbreaker CCMT insert for alloy steel turning
- Compact size 06 Korloy carbide insert
- R0.4 nose radius indexable steel turning insert
- CCMT060204 insert for CNC lathe finishing
- Korloy insert for external steel turning holder
- Korloy insert for internal SCLCR boring bar
- Ten piece box of CCMT060204 NC3120 inserts
Authority and Verification Notes
Insert designation terminology is presented in the context of the ISO indexable-insert designation system. Review the current ISO 1832 search results for the applicable standard edition. For manufacturer-specific grade, chipbreaker, coating, and cutting-data confirmation, consult the Korloy official website and its latest technical documentation. Product-specific values on this page are based on the current store record and should be validated before production use.
Material Comparison Tip
Choose NC3120 when you need a balanced steel grade for changing conditions. Consider the related NC3020 reference when stable continuous cutting and wear resistance are the priority, or the related NC3030 reference when heavy interrupted cutting and toughness are the priority. These are selection references, not guaranteed equivalents.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.