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Carbide insert APKT 160408 PDTR - Carbide insert milling machine Horn - nr. 1
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  • Carbide insert APKT 160408 PDTR - Carbide insert milling machine Horn - nr. 1
  • Carbide insert APKT 160408 PDTR - Carbide insert milling machine Horn - nr. 2
Artykuły Techniczne

Carbide insert APKT 160408 PDER FM H8320 Horn

Artykuły Techniczne Artykuły Techniczne
03503
Cutting edge length: 163 sizes of this insert
10 mm1116
€6.47 tax inc.

Net price: €5.26

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Description

APKT 160408 milling insert – positive insert for steel

Technical data
Side length l16 mm
Insert thickness s4.76 mm
Corner radius rε0.8 mm
GradeH8320
ThePVD TiAlN
APKT 160408 PDER milling insert, grade H8320 with PVD coating, rectangular 85° with a hole

Cutting data for the APKT indexable insert for steel and stainless steel

finish milling, semi-finish milling and rough milling — ISO groups P and M

MaterialVc [m/min]Feed fz [mm/tooth]ap [mm]
PSteel130-2000.10-0.201-4
MStainless steel70-1300.06-0.150.5-2

H8320 cemented carbide insert – design and applications

rectangular 85°; PDER FM are manufacturer codes requiring the product data sheet

The APKT 160408 milling insert is a positive indexable insert made of cemented carbide in grade H8320, designed for milling structural steels and stainless steels. Shape A, a rectangle with an angle of eighty-five degrees, provides two cutting edges per insert. The positive clearance angle of eleven degrees reduces cutting resistance and spindle load. The insert is installed in milling heads and indexable milling cutters with an AP16 pocket, where it is used for machining ninety-degree shoulders, face milling and peripheral milling. Grade H8320 is a harder, more wear-resistant carbide than the general-purpose H6310, with a TiAlN coating applied by PVD, or physical vapor deposition.

Key advantages of the H8320 carbide insert

  • Higher abrasive wear resistance — the harder H8320 grade retains edge sharpness longer than H6310 when machining at high cutting speeds.
  • Thermal stability of the PVD TiAlN coating — reduces crater wear and allows operation at higher temperatures in the cutting zone.
  • Two cutting edges — the 85° rectangle provides 2 working corners; when a corner becomes dull, index the insert in the pocket without replacing the holder.
  • Low cutting resistance results from the basic positive APKT geometry; the properties of the PDER FM codes require the product data sheet.
  • Universal AP16 mounting — fits indexable milling cutters, ST90 end mills and TK90 milling heads without reconfiguring the holder.
  • Tolerance class K — precision-ground thickness of ±0.025 mm ensures uniform cutting edge height in the milling head.

Applications and milling data selection

The harder H8320 grade performs best under stable conditions: with rigid workpiece and tool clamping and continuous contact between the cutting edge and the material. Calculate spindle speed using n = 1000 × Vc / (π × D). For a milling head diameter of 50 mm at a cutting speed of 200 m/min, the result is approximately 1273 rpm. With a feed per tooth fz of 0.15 mm and five cutting edges, the feed rate Vf = n × fz × z is approximately 955 mm/min. Treat these values as a starting point and verify them against the process data sheet for the specific milling head.

The TiAlN coating reduces crater wear and allows operation at higher temperatures in the cutting zone, so the carbide insert retains its sharpness longer than softer grades. PDER FM are manufacturer geometry codes; their properties require the product data sheet. For austenitic stainless steel, maintain a constant feed and continuous cooling to limit work hardening of the layer being cut. Indexable inserts in grade H8320 are supplied by the Korean brand Horn.

▲
Application limitation

The harder grade H8320 has lower impact toughness than the general-purpose grade H6310. For interrupted milling, vibration or unstable clamping, select a tougher grade to avoid edge chipping.

Parallelogram insert designation decoder according to ISO 1832

how to read the APKT 160408 PDER code — positions 1–10 of the designation

Designation APKT 160408 PDER according to the standard ISO 1832: 4 letters describe the geometry and construction, 2 numeric codes describe the dimensions, and the suffix PDER — the wiper edge geometry. Each field has a number, an icon and a brief description.

ISO 1832 designation decoder — how to read the code

1Ashape 2Pangle α 3Ktolerance 4Ttype – 516edge length 604thickness 708radius rε – 7Pangle κ 8Dland α′ 9Eedge 10Rhand

Positions 1–4 · ISO code

1AShape

Parallelogram 85°

2 corners of 85° per side

2PClearance angle

α = 11°

positive, single-sided

3KTolerance

Class K (precision)

ground thickness ±0.025 mm

4TType

Countersunk hole + chip breaker

countersink 40–60°, single-sided chip breaker

Positions 5–7 · dimensions [mm]

516Edge length

l = 16 mm

code 16 → edge length

604Thickness

s = 4.76 mm

between rake faces

708Corner radius

rε = 0.8 mm

code ÷ 10 → radius in mm

PDER suffix · wiper edge

7PEntering angle

κ = 90°

90° angle milling cutters and milling heads

8DWiper land

α′ = 15°

wiper land clearance angle

9EEdge condition

Rounded (honed)

greater resistance to chipping

10RHand

Right-hand

standard clockwise spindle rotation

✓ 2 corners × 1 side = 2 cutting edges

Full designation: APKT 160408 PDER = parallelogram 85° · positive 11° · class K · countersunk hole and chip breaker · l 16 mm · s 4.76 mm · rε 0.8 mm · κ 90° · wiper chamfer 15° · rounded edge · right-hand (R)

APKT 160408 insert compatibility with indexable milling cutters

AP16 pocket — ST90 end mills and TK90 milling heads with diameters of 25–200 mm

ST90 AP16 D25 W25 L120 Z02⌀25 mm | 2 cutting edges | L120 mm | Weldon ⌀25
⌀25
ST90 AP16 D32 W25 L120 Z03⌀32 mm | 3 cutting edges | L120 mm | Weldon ⌀25
⌀32
ST90 AP16 D32 W32 L120 Z03⌀32 mm | 3 cutting edges | L120 mm | Weldon ⌀32
⌀32
ST90 AP16 D40 W32 L120 Z04⌀40 mm | 4 cutting edges | L120 mm | Weldon ⌀32
⌀40
ST90 AP16 D25 W25 L150 Z02⌀25 mm | 2 cutting edges | L150 mm | Weldon ⌀25
⌀25
ST90 AP16 D32 W32 L150 Z03⌀32 mm | 3 cutting edges | L150 mm | Weldon ⌀32
⌀32
ST90 AP16 D35 W32 L150 Z03⌀35 mm | 3 cutting edges | L150 mm | Weldon ⌀32
⌀35
ST90 AP16 D40 W32 L150 Z04⌀40 mm | 4 cutting edges | L150 mm | Weldon ⌀32
⌀40
ST90 AP16 D25 C25 L200 Z02⌀25 mm | 2 cutting edges | L200 mm | Straight shank ⌀25
⌀25
ST90 AP16 D32 C32 L200 Z03⌀32 mm | 3 cutting edges | L200 mm | Straight shank ⌀32
⌀32
ST90 AP16 D35 C32 L200 Z03⌀35 mm | 3 cutting edges | L200 mm | Straight shank ⌀32
⌀35
ST90 AP16 D40 C32 L200 Z04⌀40 mm | 4 cutting edges | L200 mm | Straight shank ⌀32
⌀40
TK90 AP16 D40 A16 Z04-H⌀40 mm | 4 cutting edges | 90° | mounting ⌀16
⌀4090°
TK90 AP16 D50 A22 Z05-H⌀50 mm | 5 cutting edges | 90° | mounting ⌀22
⌀5090°
TK90 AP16 D63 A22 Z06-H⌀63 mm | 6 cutting edges | 90° | mounting ⌀22
⌀6390°
TK90 AP16 D80 A27 Z07-H⌀80 mm | 7 cutting edges | 90° | mounting ⌀27
⌀8090°
TK90 AP16 D100 A32 Z08-H⌀100 mm | 8 cutting edges | 90° | mounting ⌀32
⌀10090°
TK90 AP16 D125 B40 Z09⌀125 mm | 9 cutting edges | 90° | mounting ⌀40
⌀12590°
TK90 AP16 D160 C40 Z10⌀160 mm | 10 cutting edges | 90° | mounting ⌀40
⌀16090°
TK90 AP16 D200 B60 Z12⌀200 mm | 12 cutting edges | 90° | mounting ⌀60
⌀20090°

Frequently asked questions about the APKT 160408 insert

materials, cutter selection and grade differences

H8320 is a harder carbide with higher abrasive wear resistance — for higher speeds and harder steels. H6310 has greater impact toughness — it handles interrupted milling, vibration and unstable clamping better. Both grades cover groups ISO P and ISO M.

Two — a rectangle with an angle of 85° provides 2 working corners; the geometry is positive and single-sided. When one corner becomes dull, index the insert to the second corner.

They differ in tolerance class. APKT has class K with precision-ground thickness ±0.025 mm, ensuring that the inserts in the milling head cut at the same height. APMT has class M (±0.05–0.13 mm), costs less and is sufficient for rough milling.

Indexable milling cutters and milling heads with a pocket AP16: milling heads ST90 (25–40 mm) for shoulders and TK90 (40–200 mm) for face milling.

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Carbide insert APKT 160408 PDER FM H8320 Horn

Carbide insert APKT 160408 PDER FM H8320 Horn

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