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Carbide insert MGMN 300 for cutting and grooving Horn
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  • Carbide insert MGMN 300 for cutting and grooving Horn
  • Carbide insert MGMN 300 for cutting and grooving Horn - nr. 1
Horn

Carbide insert MGMN 300 T H5115 Horn

Horn Horn
15331
Insert width: 3 mm6 sizes of this insert
1 mm1.5 mm2 mm3 mm4 mm5 mm
€5.83 tax inc.

Net price: €4.74

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W magazynie: +100 szt.
W magazynie: +100 szt.

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

Description

MGMN 300 insert in grade H5115 is a double-ended carbide insert from the Korean company Horn, designed for parting, grooving, and turning cast iron.

Technical data for the 3 mm MGMN cast iron parting insert

MGMN 300 H5115 dimensions and geometric parameters

Technical data
Cutting width b 3 mm
Corner radius r 0.4 mm
overall length l 21 mm
width d 3.3 mm
height t 4.8 mm
MGMN 300 H5115 cast iron parting insert

The MGMN cast iron insert with a width of 3 mm allows

Turning operations in cast iron with the MGMN 300 H5115 insert

  • cast iron parting

  • turning

  • grooving

  • facing

Parting cast iron with a tool fitted with an MGMN 300 H5115 insert
Cutting a groove in cast iron with a turning tool fitted with an MGMN insert

MGMN 300 cutting data — grade H5115 for cast iron

Speeds and feeds for 3 machining operations in cast iron

MaterialPartingFacingGrooving / turning
Vc [m/min]fn [mm/rev]Vc [m/min]fn [mm/rev]Vc [m/min]fn [mm/rev]
K Gray cast iron (GJL) 100 – 160 0.10 – 0.28 120 – 180 0.12 – 0.32 110 – 170 0.10 – 0.25
K Ductile cast iron (GJS) 80 – 120 0.08 – 0.20 90 – 140 0.10 – 0.24 80 – 130 0.08 – 0.20
K Malleable / hardened cast iron 50 – 90 0.06 – 0.15 60 – 100 0.08 – 0.18 50 – 90 0.06 – 0.15

MGMN 300 cast iron parting insert – 3 mm insert for gray and ductile cast iron

Grade H5115 with a CVD Al₂O₃ coating

The MGMN 300 H5115 Horn insert is a double-ended carbide insert with a cutting edge width of 3 mm, designed for parting larger-diameter cast iron shafts and cutting wider external grooves in cast iron on conventional and CNC lathes. The cemented carbide grade H5115 with a multilayer aluminum oxide (Al₂O₃)-based CVD coating covers the ISO K10-K30 application range, specializing in machining gray, ductile, and malleable cast iron, with the ability to part cast steel and hardened cast iron. The wide 3 mm cutting edge provides high rigidity and stability during deeper parting cuts and allows significantly higher feed rates than the 1.5 and 2 mm versions. The insert is compatible with MGMN-type indexable tools with a spring clamping system. Its 2-edge design allows the insert to be indexed after the first edge wears out and machining to continue without replacement.

Key features of the MGMN 300 H5115 Horn insert

  • CVD coating with a thick Al₂O₃ layer provides exceptional resistance to abrasive and crater wear, essential when machining cast iron containing abrasive silicon carbide (SiC) at high cutting speeds
  • Grade H5115 in the ISO K10-K30 range provides an optimal balance between hardness and edge toughness when machining gray, ductile, and malleable cast iron
  • Cutting width of 3 mm with T-type geometry allows stable parting of cast iron shafts up to 26 mm in diameter and cutting wide grooves for seals and retaining rings
  • The double-ended design provides 2 independent cutting edges, reducing the machining cost per 1 component by 50 percent
  • Compatibility with MGEHR-type holders in shank sizes 16x16-32x32 mm, BDKT parting blades, and MGIVR, BIKT, and BEKT internal holders for deep cutting
  • Dry machining capability — gray cast iron requires no coolant, and the graphite in its structure acts as a natural lubricant, preventing thermal cracking of the CVD coating

The MGMN 300 cast iron parting insert is suitable for series production of larger-diameter cast iron shaft components, machining hydraulic housings, parting heavy workpieces, and cutting wide grooves. The recommended cutting speed Vc is 100-160 m/min for gray cast iron and 80-120 m/min for ductile cast iron at feed rates of 0.08-0.25 mm/rev. Dry machining is recommended for gray cast iron — cooling is unnecessary and may shorten coating life due to thermal shock; compressed air cooling is acceptable for ductile cast iron.

Compatible turning tools

for the MGMN 300 insert (groove width 3 mm)

MGEHR/L 1616-316×16 × 100 mm | Tmax 18.5R right-hand
←L left-hand
→
MGEHR/L 2020-320×20 × 125 mm | Tmax 18R right-hand
←L left-hand
→
MGEHR/L 2525-325×25 × 150 mm | Tmax 18R right-hand
←L left-hand
→
MGEHR/L 3232-332×32 × 170 mm | Tmax 18R right-hand
←L left-hand
→
BDKT R/L 1212 K3C T1812×12 × 100 mm | Tmax 18 | Ømax 36R right-hand
←L left-hand
→
BDKT R/L 1616 K3C T1816×16 × 125 mm | Tmax 18 | Ømax 36R right-hand
←L left-hand
→
BDKT R/L 2020 K3C T2020×20 × 125 mm | Tmax 20 | Ømax 40R right-hand
←L left-hand
→
BDKT R/L 2525 K3C T2225×25 × 150 mm | Tmax 22 | Ømax 44R right-hand
←L left-hand
→
BDKT R/L 2525 K3C T2525×25 × 150 mm | Tmax 25 | Ømax 50R right-hand
←L left-hand
→
BDKT R/L 2525 K3C T4025×25 × 170 mm | Tmax 40 | Ømax 80R right-hand
←L left-hand
→
BDKT R/L 3232 K3C T2232×32 × 170 mm | Tmax 22 | Ømax 44R right-hand
←L left-hand
→
MGIVR/L 2520-3Ø25 (d=20) × 150 mm | Tmax 6R right-hand
←L left-hand
→
MGIVR/L 3125-3Ø31 (d=25) × 200 mm | Tmax 6R right-hand
←L left-hand
→
MGIVR/L 3732-3Ø37 (d=32) × 250 mm | Tmax 6R right-hand
←L left-hand
→
BIKT R/L 20 K3C T6Ø20 × 170 mm | Tmax 6R right-hand
←L left-hand
→
BIKT R/L 25 K3C T7Ø25 × 200 mm | Tmax 7R right-hand
←L left-hand
→
BIKT R/L 32 K3C T8Ø32 × 250 mm | Tmax 8R right-hand
←L left-hand
→
BIKT R/L 40 K3C T10Ø40 × 300 mm | Tmax 10R right-hand
←L left-hand
→
BEKT R/L 25 K3C T7Ø25 × 200 mm | Tmax 7 | reinforcedR right-hand
←L left-hand
→
BEKT R/L 25 K3C T10Ø25 × 200 mm | Tmax 10 | reinforcedR right-hand
←L left-hand
→
BEKT R/L 32 K3C T10Ø32 × 250 mm | Tmax 10 | reinforcedR right-hand
←L left-hand
→

Frequently asked questions

The MGMN 300 insert in grade H5115 is specialized for machining cast iron in the ISO K10-K30 range: gray (GJL), ductile (GJS), and malleable cast iron. It can also part cast steel and hardened cast iron. For structural and stainless steels, a general-purpose grade such as H6310 is a better choice.

No. Dry machining is recommended for gray cast iron — the graphite in the material structure acts as a natural lubricant, while emulsion cooling can cause thermal shock and cracking of the CVD coating. For ductile cast iron, compressed air cooling is acceptable for chip removal.

With a cutting edge width of 3 mm and standard mounting in the holder, the MGMN 300 insert can part cast iron shafts up to 26 mm in diameter. For smaller diameters and less material loss, choose MGMN 200 (2 mm), and for larger diameters, use MGMN 400 (4 mm) or a BDKT parting blade with extended overhang.

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Carbide insert MGMN 300 T H5115 Horn

Carbide insert MGMN 300 T H5115 Horn

Shipping

All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE

Courier GLS Przelew24 / Prepayment 14,76 zł gross Delivery time 1 working day
Courier GLS Cash on delivery 17,26 zł gross Lead time 1 working day

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