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Description
WNMG 060404 turning insert – indexable 80° trigon
| Technical data | |
|---|---|
| Edge length l | 6.5 mm |
| Insert thickness s | 4.76 mm |
| Hole diameter d1 | 3.81 mm |
| Corner radius rε | 0.4 mm |
| Inscribed circle IC | 9.525 mm |
| ANSI code | WNMG 331 |
Cutting data for the WNMG 060404 insert for steel and stainless steel
finishing, semi-finishing and roughing — ISO P and M groups
| Material | Finishing | Semi-finishing | Roughing | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Vc [m/min] | Feed f [mm/rev] | ap [mm] | Vc [m/min] | Feed f [mm/rev] | ap [mm] | Vc [m/min] | Feed f [mm/rev] | ap [mm] | |
| PSteel | 200-295 | 0.1 | 0.5 | 170-240 | 0.22 | 2 | 150-215 | 0.3 | 3 |
| MStainless steel | 140-180 | 0.1 | 0.5 | 100-150 | 0.22 | 2 | 80-120 | 0.3 | 3 |
Grade H6310 cemented carbide indexable insert – applications and construction
double-sided 80° trigon with a hole and chip breaker
The WNMG 060404 turning insert is a double-sided indexable insert made of grade H6310 cemented carbide, designed for turning steel and stainless steel. The W shape, a trigon with a 80° corner angle, combines rigidity close to that of a square insert with good access to the workpiece contour. The negative geometry with a 0° clearance angle allows both sides of the insert to be used — a total of six cutting edges. The nose radius rε of 0.4 mm makes the insert suitable for finishing and semi-finishing with a smooth surface finish. The hole and chip breaker on both sides (type G according to ISO 1832) control chip flow and chip breaking.
Key advantages of the H6310 cemented carbide insert
- Six cutting edges — 3 trigon corners on each of the two sides reduce the cost per cutting edge compared with single-sided inserts.
- Grade H6310 for ISO groups P and M — general-purpose PVD-coated carbide: steel (P20-P40) and stainless steel (M20-M40), and occasionally cast iron.
- Corner radius rε 0.4 mm — designed for finishing and semi-finishing at low and medium feed rates.
- The 80° corner angle provides a strong corner that is less prone to chipping than that of 60° triangular inserts.
- Dimensions according to ISO 1832: inscribed circle IC 9.525 mm (3/8″), thickness 4.76 mm — compatible with holders with a 06 trigon pocket.
- Tolerance class M provides repeatable cutting edge positioning after indexing the insert in the pocket.
Applications and cutting data selection for the trigon insert
The WNMG 060404 insert (also written without a space as wnmg060404) is suitable for longitudinal turning and facing of shafts, bushings and flanges made of structural steels, as well as stainless steel components. Calculate spindle speed using n = 1000·Vc/(π·D): for a shaft with a diameter of 40 mm at Vc = 200 m/min, the result is approximately 1592 rpm. The 80° trigon withstands loads well during copy and profile turning, where a balance between access and corner strength matters. For consistent chip breaking, select the feed rate according to the cutting data table — from 0.1 mm/rev for finishing to 0.3 mm/rev for roughing.
When machining stainless steels, maintain a cutting speed of 80–180 m/min and a constant feed rate to reduce work hardening of the layer being cut and remove heat from the cutting zone. For structural steels, grade H6310 allows operation in the 150–295 m/min range; select a higher speed for finishing and a lower speed for greater depths of cut. Tolerance class M ensures repeatable cutting edge positioning after indexing the insert in the pocket, reducing adjustment time on the machine. For interrupted cuts or cast skin, reduce the feed rate to protect the trigon corner from chipping. Grade H6310 indexable inserts are supplied by the Korean brand Horn.
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Application limitation
Grade H6310 is not intended for steels hardened above 45 HRC — for hard turning, choose an insert variant with a cubic boron nitride cutting edge CBN.
Trigon insert designation decoder according to ISO 1832
how to read the WNMG 060404 code — positions 1–7 of the designation
Designation WNMG 060404 according to the standard ISO 1832: 4 letters describe geometry and construction, 3 numeric codes describe dimensions. Each field has a number, an icon, and a brief description.
Compatible turning tools
holders with a 06 trigon pocket — external and internal turning
TWLNR/L 1616 H0616×16 × 100 mmR right-hand
←L left-hand
→
←L left-hand
→
TWLNR/L 2020 K0620×20 × 125 mmR right-hand
←L left-hand
→
←L left-hand
→
TWLNR/L 2525 M0625×25 × 150 mmR right-hand
←L left-hand
→
←L left-hand
→
MWLNR/L 1616 H0616×16 × 100 mmR right-hand
←L left-hand
→
←L left-hand
→
MWLNR/L 2020 K0620×20 × 125 mmR right-hand
←L left-hand
→
←L left-hand
→
MWLNR/L 2525 M0625×25 × 150 mmR right-hand
←L left-hand
→
←L left-hand
→
MWDNN 1616 H0616×16 × 100 mmR right-hand
←L left-hand
→
←L left-hand
→
MWDNN 2020 K0620×20 × 125 mmR right-hand
←L left-hand
→
←L left-hand
→
MWDNN 2525 M0625×25 × 150 mmR right-hand
←L left-hand
→
←L left-hand
→
S20R TWLNR/L-06Ø20 | Ømin 25 mm | L=200R right-hand
←L left-hand
→
←L left-hand
→
S25S TWLNR/L-06Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
←L left-hand
→
S32T TWLNR/L-06Ø32 | Ømin 40 mm | L=300R right-hand
←L left-hand
→
←L left-hand
→
S16P MWLNR/L-06Ø16 | Ømin 21 mm | L=170R right-hand
←L left-hand
→
←L left-hand
→
S20R MWLNR/L-06Ø20 | Ømin 25 mm | L=200R right-hand
←L left-hand
→
←L left-hand
→
S25S MWLNR/L-06Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
←L left-hand
→
Frequently asked questions about the WNMG 060404 insert
use, turning tool selection, and turning parameters
Six — the trigon has 3 corners per side, and the negative geometry (0° clearance angle) allows both sides of the insert to be used. Once an edge becomes dull, simply rotate the insert in its pocket without changing the holder.
Holders with a 06 trigon pocket (inscribed circle IC 9.525 mm): for external turning TWLNR/L and MWLNR/L (entering angle 95°) and MWDNN (50°) with shank cross sections of 16×16–25×25 mm; for internal turning, boring bars S16P–S32T with a TWLNR/L or MWLNR/L head.
Only in corner radius: 0.4 mm is suitable for finishing and semi-finishing at low feed rates, while 0.8 mm is a more versatile variant with greater strength at higher feed rates. The other dimensions (IC 9.525 mm, thickness 4.76 mm) are identical.
Yes — grade H6310 covers group ISO M20-M40. Maintain a cutting speed of 80–180 m/min, a constant feed, and continuous emulsion cooling: austenitic steel conducts heat poorly and work-hardens when cutting is too slow.
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| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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