TURNING INSERT - NEGATIVE_WNMG
Caution
Product Description
Pramet WNMG 060402E-FF:T8315 by Dormer Pramet is a double-sided negative 80° trigon turning insert with the FF chip-breaker and rounded cutting edges. Grade T8315 is a PVD coated fine grained WC-Co carbide (ISO M05-M20) designed for fine machining of stainless steels.
Designation and standards
The product code follows the ISO 1832 designation system for indexable inserts; the equivalent ANSI code is WNMG 330.5-FF:T8315. Grade T8315 is assigned to ISO 513 application range M05-M20 (stainless steels).
Recommended cutting range
- Depth of cut (ap): 0.2 - 1.5 mm
- Feed (f): 0.06 - 0.15 mm/rev
Usage notes
- Mount in holders made for WNMG 0604 negative inserts, for example Pramet PWLNR / PWLNL 0604, and clean the insert seat before clamping.
- The FF geometry is for finishing at light feeds and shallow depths of cut; for roughing or heavy interrupted cutting choose a stronger chip-breaker and a larger nose radius.
- When turning stainless steel, stay within the recommended range: cuts that are too light can cause work hardening, while overloading the 0.2 mm nose radius increases the risk of edge chipping.
- Index to a fresh cutting corner when flank or notch wear starts to affect surface finish or dimensional accuracy.
- Wear safety glasses and handle inserts with care; carbide edges and chips are sharp.
The Pramet WNMG 060402E-FF:T8315 is a double-sided negative turning insert with an 80° trigon (W) shape, 9.525 mm inscribed circle, 4.76 mm thickness and 0.2 mm nose radius. It is made to ISO tolerance class M and features the FF chip-breaker with rounded cutting edges, suited to finishing operations at light feeds and shallow depths of cut.
The insert is supplied in grade T8315, a PVD coated fine grained WC-Co carbide within ISO application range M05-M20, intended for fine machining of stainless steels.
Key features
- Double-sided negative geometry with cutting corners on both faces for economical use of each insert
- FF chip-breaker with rounded cutting edges for finishing at depths of cut of 0.2 - 1.5 mm and feeds of 0.06 - 0.15 mm/rev
- T8315 belongs to the T8300 series and combines high abrasion resistance with reliable edge strength
- Fine sub-micron carbide substrate with comparatively low cobalt content
- Multi-layer nano PVD coating with graded transitions between layers
- Reduced notch wear on the main cutting edge
- Handles hard-to-machine materials such as stainless steels, mild steels and heat resistant alloys
Applications
Finishing passes in longitudinal turning and facing on CNC lathes, using holders for WNMG 0604 negative inserts such as Pramet PWLNR / PWLNL 0604.
| Brand | Dormer Pramet (Pramet) |
|---|---|
| Product code (ISO) | WNMG 060402E-FF:T8315 |
| ANSI code | WNMG 330.5-FF:T8315 |
| Insert type | Double-sided negative turning insert |
| Shape | W, 80° trigon |
| Clearance angle | 0° |
| Tolerance class | M |
| Inscribed circle (d) | 9.525 mm |
| Thickness (s) | 4.76 mm |
| Fixing hole diameter (d1) | 3.81 mm |
| Nose radius (r) | 0.2 mm |
| Chip-breaker | FF, rounded cutting edges |
| Grade | T8315 |
| Insert material | Fine grained WC-Co carbide, sub-micron substrate |
| Coating | Nano-layered PVD |
| ISO application range | M05-M20 |
| Operation | Fine machining (finishing) |
| Pack quantity | 10 pcs |
Dimensions and recommended cutting data published by Dormer Pramet for this insert.
| Product code | ANSI code | d (mm) | l (mm) | s (mm) | d1 (mm) | r (mm) | ap (mm) | f (mm/rev) | Grade |
|---|---|---|---|---|---|---|---|---|---|
| WNMG 060402E-FF:T8315 | WNMG 330.5-FF:T8315 | 9.525 | 6.5 | 4.76 | 3.81 | 0.2 | 0.2 - 1.5 | 0.06 - 0.15 | T8315 |
- d: inscribed circle diameter
- l: cutting edge length
- s: insert thickness
- d1: fixing hole diameter
- r: nose radius
- ap: depth of cut (min - max)
- f: feed per revolution (min - max)
WNMG 060402E-FF:T8315 is a flat, double-sided turning insert with an 80° trigon (W) outline: three 80° cutting corners on each face, a 0° clearance angle (side faces perpendicular to the top and bottom faces) and a cylindrical fixing hole in the centre. The FF chip-breaker is formed along the cutting edges on both faces, and the cutting edges are rounded.
- Inscribed circle diameter (d): 9.525 mm
- Cutting edge length (l): 6.5 mm
- Thickness (s): 4.76 mm
- Fixing hole diameter (d1): 3.81 mm
- Nose radius (r): 0.2 mm
How to read the code WNMG 060402E-FF:T8315
| Code | Meaning |
|---|---|
| W | Trigon shape with 80° corners |
| N | 0° clearance angle (negative insert) |
| M | ISO tolerance class M |
| G | Cylindrical fixing hole, chip-breaker on both faces |
| 06 | Cutting edge length 6.5 mm (inscribed circle 9.525 mm) |
| 04 | Thickness 4.76 mm |
| 02 | Nose radius 0.2 mm |
| E | Rounded cutting edge |
| FF | Pramet chip-breaker for fine machining |
| T8315 | PVD coated carbide grade, ISO M05-M20 |
Choosing the right insert for the workpiece
- Stainless steels: WNMG 060402E-FF:T8315 is intended for finishing passes within ISO M05-M20, where low cutting forces and a good surface finish are required.
- Mild steels and heat resistant alloys with poor machinability: the abrasion resistant T8315 grade can also be used for finishing these materials.
- Nose radius: the 0.2 mm radius keeps cutting forces low on slender parts and small finishing allowances; if a stronger corner or higher feed is needed, the same FF geometry is available as WNMG 060404E-FF:T8315 with a 0.4 mm nose radius and feeds up to 0.2 mm/rev.
- Steel and cast iron in general production: consider an MT-CVD coated Pramet grade such as T9415 (ISO P05-P30) with a suitable chip-breaker.
- Roughing or large depths of cut: choose a stronger chip-breaker and a larger nose radius instead of FF.