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Carbide insert WNMG 080412 - Carbide insert lathe H6310 Horn - nr. 1
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  • Carbide insert WNMG 080412 - Carbide insert lathe H6310 Horn - nr. 1
  • Carbide insert WNMG 080412 - Carbide insert lathe H6310 Horn - nr. 2
Horn

Carbide insert WNMG 080412 MA H6310 Horn

Horn Horn
0000004952
€6.47 tax inc.

Net price: €5.26

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Call and order: (44) 755-04-05

Description

WNMG 080412 turning insert – indexable 80° trigon

Technical data
Side length l 8.7 mm
Insert thickness s 4.76 mm
Hole diameter d1 5.16 mm
Corner radius rε 1.2 mm
ANSI code WNMG 433
WNMG 080412 indexable turning insert made of H6310 cemented carbide, double-sided 80° trigon with a hole and chip breaker

Cutting data for the WNMG insert for steel and stainless steel

finishing, semi-finishing and roughing — ISO P and M groups

MaterialFinishingSemi-finishingRoughing
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 0.18 0.8 170-240 0.35 2.5 150-215 0.6 4
MStainless steel 110-230 0.18 0.8 70-175 0.35 2.5 50-135 0.6 4

Grade H6310 cemented carbide indexable insert – applications and construction

double-sided 80° trigon with a hole and chip breaker

The WNMG 080412 turning insert is a double-sided, trigon indexable insert made of H6310 grade cemented carbide, designed for turning steel and stainless steel. Shape W, a trigon with a 80° corner angle, combines strength close to that of a square corner with better access to the workpiece contour than a square insert. Negative geometry with a 0° clearance angle allows both sides of the insert to be used — a total of six cutting edges. The large rε 1.2 mm nose radius strengthens the corner and supports roughing at feed rates up to 0.6 mm/rev. The hole and double-sided type G chip breaker per ISO 1832 control chip flow and breaking throughout the feed range.

H6310 is a versatile PVD-coated carbide grade covering ISO groups P20-P40 and M20-M40, namely structural and alloy steels and austenitic stainless steels; it is also suitable for occasional cast iron machining. A cemented carbide insert with this geometry is versatile: the 1.2 mm radius is suitable for medium machining and roughing, where edge resistance to loads and interrupted cutting matters. The same cutting insert can handle shafts, bushings, and flanges without switching to a smaller radius between operations.

Key advantages of the H6310 cemented carbide insert

  • Six cutting edges — 3 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.
  • Large corner radius rε 1.2 mm — reinforced corner for roughing and medium machining at feed rates up to 0.6 mm/rev.
  • The 80° corner angle provides a strong edge comparable to that of a square insert, with better access to the workpiece contour.
  • Tolerance class M, with an inscribed circle IC tolerance of ±0.08 mm, ensures repeatable cutting edge positioning after indexing the insert in its pocket.
  • Dimensions conform to ISO 1832: edge length 8.7 mm, IC 12.7 mm (1/2″), thickness 4.76 mm — compatible with holders with a size 08 trigon pocket.

Applications and cutting data selection for the trigon insert

The WNMG 080412 insert (also written without a space as wnmg080412) performs well in longitudinal turning and facing of structural steel and stainless steel components — these are typical turning inserts for series production. Calculate spindle speed using n = 1000·Vc/(π·D): for a shaft diameter of 50 mm at Vc = 200 m/min, the result is approximately 1273 rpm, and increasing the diameter to 80 mm gives approximately 796 rpm. For stainless steels, maintain a cutting speed of 50–230 m/min and a constant feed to prevent work hardening of the layer being cut. Grade H6310 indexable inserts are supplied by the Korean brand Horn.

▲
Application limitation

Grade H6310 is not intended for steels hardened above 45 HRC — for hard turning, select the version WNMG 080412 with a cubic boron nitride (CBN) edge, intended for turning inserts for hardened steel.

Trigon insert designation decoder according to ISO 1832

how to read the WNMG 080412 code — positions 1–7 of the designation

Designation WNMG 080412 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.

ISO 1832 designation decoder — how to read the code

1Wshape 2Nangle α 3Mtolerance 4Gtype – 508size 604thickness 712radius rε

Positions 1–4 · ISO code

1WShape

80° trigon

3 corners of 80° per side

2NClearance angle

α = 0°

negative, double-sided

3MTolerance

Class M (intermediate)

IC ±0.08 · thickness ±0.13 mm

4GType

Hole + chip breaker

chip breaker on both sides

Positions 5–7 · dimensions [mm]

508Size

l = 8.7 mm

IC = 12.7 mm · 1/2″

604Thickness

s = 4.76 mm

between rake faces

712Corner radius

rε = 1.2 mm

code ÷ 10 → radius in mm

✓ 3 corners × 2 sides = 6 cutting edges

Full designation: WNMG 080412 = 80° trigon · negative · class M · hole and chip breaker · IC 12.7 mm (l 8.7 mm) · s 4.76 mm · rε 1.2 mm

Compatible turning tools

holders with a 08 trigon pocket — external and internal turning

TWLNR/L 2020 K0820×20 × 125 mmR right-hand
←L left-hand
→
TWLNR/L 2525 M0825×25 × 150 mmR right-hand
←L left-hand
→
TWLNR/L 3232 P0832×32 × 170 mmR right-hand
←L left-hand
→
TWLNR/L 4040 S0840×40 × 250 mmR right-hand
←L left-hand
→
PWLNR/L 2020 K0820×20 × 125 mmR right-hand
←L left-hand
→
PWLNR/L 2525 M0825×25 × 150 mmR right-hand
←L left-hand
→
PWLNR/L 3232 P0832×32 × 170 mmR right-hand
←L left-hand
→
PWLNR/L 4040 S0840×40 × 250 mmR right-hand
←L left-hand
→
MWLNR/L 2020 K0820×20 × 125 mmR right-hand
←L left-hand
→
MWLNR/L 2525 M0825×25 × 150 mmR right-hand
←L left-hand
→
MWLNR/L 3232 P0832×32 × 170 mmR right-hand
←L left-hand
→
MWLNR/L 4040 S0840×40 × 170 mmR right-hand
←L left-hand
→
MWDNN 2020 K0820×20 × 125 mmR right-hand
←L left-hand
→
MWDNN 2525 M0825×25 × 150 mmR right-hand
←L left-hand
→
MWDNN 3232 P0832×32 × 170 mmR right-hand
←L left-hand
→
MWDNN 4040 S0840×40 × 170 mmR right-hand
←L left-hand
→
S25S TWLNR/L-08Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
S32T TWLNR/L-08Ø32 | Ømin 40 mm | L=300R right-hand
←L left-hand
→
S40U TWLNR/L-08Ø40 | Ømin 50 mm | L=350R right-hand
←L left-hand
→
S50V TWLNR/L-08Ø50 | Ømin 63 mm | L=400R right-hand
←L left-hand
→
S25S PWLNR/L-08Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
S32T PWLNR/L-08Ø32 | Ømin 40 mm | L=300R right-hand
←L left-hand
→
S40U PWLNR/L-08Ø40 | Ømin 50 mm | L=350R right-hand
←L left-hand
→
S50V PWLNR/L-08Ø50 | Ømin 63 mm | L=400R right-hand
←L left-hand
→
S25S MWLNR/L-08Ø25 | Ømin 32 mm | L=250R right-hand
←L left-hand
→
S32T MWLNR/L-08Ø32 | Ømin 40 mm | L=300R right-hand
←L left-hand
→
S40U MWLNR/L-08Ø40 | Ømin 50 mm | L=350R right-hand
←L left-hand
→
S50V MWLNR/L-08Ø50 | Ømin 63 mm | L=400R right-hand
←L left-hand
→

Frequently asked questions about the WNMG 080412 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 size 08 trigon pocket (IC 12.7 mm): for external turning TWLNR/L, PWLNR/L and MWLNR/L (entering angle 95°) and MWDNN (50°) with shank cross sections of 20×20–40×40 mm; for internal turning, boring bars S25S–S50V with the suffix TWLNR/L, PWLNR/L, or MWLNR/L.

Only in corner radius: 0.4 mm is used for finishing at low feed rates, 0.8 mm is the general-purpose version, and 1.2 mm is selected for roughing at feed rates up to 0.6 mm/rev. The remaining dimensions (IC 12.7 mm, thickness 4.76 mm) are identical.

Yes — grade H6310 covers group ISO M20-M40. Maintain a cutting speed of 50–230 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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Carbide insert WNMG 080412 MA H6310 Horn

Carbide insert WNMG 080412 MA H6310 Horn

Shipping

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