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Carbide insert APKT 160408 PDER - Carbide insert milling machine XM H6310 Horn
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  • Carbide insert APKT 160408 PDER - Carbide insert milling machine XM H6310 Horn
  • Carbide insert APKT 160408 PDER - Carbide insert milling machine XM H6310 Horn - nr. 2
Horn

Carbide insert APKT 160408 PDER XM H6310 Horn

Horn Horn
10358
Cutting edge length: 163 sizes of this insert
10 mm1116
€5.02 tax inc.

Net price: €4.08

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

Description

APKT 160408 milling insert – 85° rectangular insert for 90° milling heads

Technical data
Side length l 16 mm
Insert thickness s 4.76 mm
Corner radius rε 0.8 mm
Clearance angle 11° (P)
Number of edges 2
APKT 160408 PDER milling insert, grade H6310, 85° rectangular insert with a mounting hole

APKT indexable insert — cutting data for steel and stainless steel

90° shoulder milling — conservative ranges for ISO P and M groups

MaterialVc [m/min]Feed per tooth fz [mm/tooth]ap [mm]
PSteel 130-200 0.10-0.20 1-4
MStainless steel 70-130 0.06-0.15 0.5-2

H6310 carbide insert – design and 90° shoulder milling

positive 85° rectangle with PVD coating for milling heads and indexable milling cutters

The APKT 160408 PDER milling insert is a positive indexable cemented carbide insert in grade H6310, designed for shoulder milling in steel and stainless steel. Shape A is a rectangle with a 85° corner angle. Combined with a 90° entering angle, it allows a vertical shoulder and a flat workpiece floor to be machined in one pass. The positive geometry with a 11° clearance angle reduces cutting resistance and spindle power consumption. The TiAlN PVD coating, deposited by physical vapor deposition, improves edge wear resistance and thermal stability at higher speeds. The corner radius rε 0.8 mm combines cutting edge strength with a smooth machined surface. Each insert provides two cutting edges, used in succession by rotating the insert in the milling head pocket.

Key benefits of the H6310 carbide milling insert

  • Two cutting edges — the 85° rectangle provides 2 working corners on one insert; once worn, simply rotate the insert in the milling head pocket.
  • Grade H6310 for ISO groups P and M — PVD-coated carbide for steel (P20-P40) and stainless steel (M20-M40) in a single item.
  • Positive 11° geometry — lower cutting resistance and reduced spindle power consumption during shoulder milling.
  • Tolerance class K ensures uniform height of all inserts in the milling head and lower surface roughness.
  • The 0.8 mm corner radius rε combines cutting edge strength with a good machined surface finish.
  • The 90° entering angle allows a vertical shoulder and a flat workpiece floor to be milled in one tool pass.

Applications and cutting data selection for the shoulder milling insert

This indexable insert performs well in milling heads and indexable milling cutters for peripheral milling, shoulder facing, and roughing and finishing surfaces in structural, alloy, and stainless steels. Calculate spindle speed using n = 1000·Vc/(π·D). For a milling head with a diameter of 50 mm at a cutting speed of 160 m/min, the result is approximately 1019 rpm. Calculate feed rate as vf = fz·z·n; with five cutting edges and a feed per tooth of fz 0.15 mm, this gives approximately 764 millimeters per minute. These settings maintain a stable edge load and consistent chip evacuation.

For stainless steel, maintain a cutting speed of 70-130 m/min and a constant feed to limit work hardening of the layer being cut. Select depth of cut ap according to system rigidity and machine power: for shoulder milling, typically 1-4 mm in steel and 0.5-2 mm in stainless materials. Grade H6310 inserts are supplied by the Korean brand Horn. Use a generous flow of emulsion or compressed air for cooling to remove chips from the cutting zone and protect the coating from overheating.

▲
Application limitation

Grade H6310 is not intended for hardened steels above 45 HRC — for harder materials, select an insert in grade H8320 or a milling head with a cubic boron nitride (CBN) cutting edge.

Parallelogram insert designation decoder according to ISO 1832

how to read the APKT 1604 PDER code — positions 1–10 of the designation

Designation APKT 1604 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 – 7Pangle κ 8Dland α′ 9Eedge 10Rhand

Positions 1–3 · 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

Positions 4–6

4TType

Countersunk hole + chip breaker

countersink 40–60°, single-sided chip breaker

516Edge length

l = 16 mm

code 16 → edge length

604Thickness

s = 4.76 mm

between rake faces

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 1604 PDER = parallelogram 85° · positive 11° · class K · countersunk hole and chip breaker · l 16 mm · s 4.76 mm · κ 90° · wiper chamfer 15° · rounded edge · right-hand (R)

Compatible 90° milling heads and indexable milling cutters

ST90 milling cutters and TK90 milling heads confirmed for this insert

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

number of edges, milling head selection, and cutting data

Two — the 85° rectangle has 2 working corners, and the positive geometry with a 11° clearance angle makes the insert single-sided, cutting only with its top face. Once a corner becomes dull, rotate the insert in the milling head pocket to the second edge without changing the tool.

It fits end mills ST90 AP16 with diameters of 25–40 mm and shell milling heads TK90 AP16 with diameters of 40–200 mm and 4 to 12 cutting edges — the tool bodies listed in the compatibility table above. For other tools, compare the pocket designation and size with the manufacturer's data.

Only in tolerance class. APKT has class K with thickness and height ground to ±0.025 mm, so all inserts in the milling head sit at the same height — lower roughness when finishing. APMT has class M (±0.05–0.13 mm), which is less expensive and sufficient for rough milling.

Yes — grade H6310 covers group ISO M20-M40. Maintain a cutting speed of 70–130 m/min, a constant feed, and continuous cooling: austenitic steel dissipates heat poorly and work-hardens when cutting is too slow.

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Carbide insert APKT 160408 PDER XM H6310 Horn

Carbide insert APKT 160408 PDER XM H6310 Horn

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