Grade Select Guide | EHWA CUTTING TOOLS

GRADE SELECTION GUIDE

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GRADE SELECTION GUIDE

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Choose your workpiece or material to machine

N

Non ferrous materials : Al alloy, Cu alloy, plastic, wood,

advanced composite, MMC, CFRP, GFRP

Low Alloyed

Hardened steel : HRC 50-65 Gear, Pinion, Shaft, Cv joint, Bearing

Super alloy : Inconel718,901,600 / rene76,77,95 / stellite /Co-Cr alloy , Turbine / Turbine disc, blade, vane. valve ring.

Sintered metal : Valve seat / valve guide

Hardened steel : HRC 50-65 Gear, Pinion, Shaft, Cv joint, Bearing

K

Cast iron : Grey cast iron / Ni-hard cast iron / Chilled cast iron/ Nodular iron

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NS

Choose your workpiece or material to machine

PCD재종

PCD GRADE IN STOCK

Grit size (㎛)

0.5

Wear resistance

EP20

Surface roughness

Characteristics

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Superior cutting edge sharpness and chip resistance compared to conventional grades. Ideal for interrupted cutting of highly abrasive workpieces, such as optics and acrylic.

EP55

Grit size (㎛)

10

Wear resistance

Surface roughness

Characteristics

General purpose. Si/Al alloys < 13%,

Wood composites, Copper alloy,

etc.

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EP55

EP59

Grit size (㎛)

25+2

Wear resistance

Surface roughness

Characteristics

Multi-modal grade. Ideal impact strength and abrasion resistance for machining.

Fiberglass, Si/Al alloys > 13%, MMC,

Tungsten carbide, Ceramic, etc.

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EP59

PCD Application Table

PCD

EHWA DIAMOND - APPLICATION (Non-Ferrous Materials)

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HARD TURNING

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H05 : Continuous / H15 : Light Interrution / H25 : Medium Interrution / H35 : Heavy Interruption

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PCBN GRADE FOR HARDEND STEEL

EB428

Continuous

CBN vol (%)

50~55%

Wear resistance

Chemical wear resistance

Fracture toughness

Characteristics

The EB428 grade exhibits excellent high-temperature wear resistance, making it well-suited for the continuous processing of heat-treated steel and high-speed machining of spherical graphite cast iron. Additionally, this grade features outstanding heat resistance due to its multi-layer coating.

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EB419

CBN vol (%)

65~70%

Wear resistance

Continuous -Medium Interrupted

Characteristics

EB419 is commonly used for continuous to intermediate heat treatment steel machining and exhibits excellent wear resistance. Additionally, this grade features outstanding heat resistance with a multi-layer coating.

Chemical wear resistance

Fracture toughness

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EB454

Light ~ Heavy Interrupted

CBN vol (%)

70%

Wear resistance

Characteristics

EB454 is used for hardend steel from light to heavy interrupted cut through excellent edge sharpness. Excellent heat resistance with multi-layer coating

Chemical wear resistance

Fracture toughness

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EB210

Heavy Interruped

CBN vol (%)

90%

Wear resistance

Chemical wear resistance

Fracture toughness

Characteristics

EB210 is highly resistant to wear, impacts, and even chemicals.

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S.A

PCBN GRADE FOR SUPER ALLOY

Continuous - Light Interrupted

CBN vol(%)

45~50%

Wear resistance

Characteristics

EB59X is ideal for high-speed steel machining, exhibiting excellent resistance to defects and chemicals.

Chemical wear resistance

Fracture toughness

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TEST REFEREANCE

Tool Spec : 2MT-DCGT11T304E , EB59X
WorkPiece : INCONEL 718
V/C Speed : S 150 m/min
Feed : F 0.1mm/rev
D.O.C (ap) : 0.15 mm
Coolant : Yes (Wet)

INCONEL 718

EB51

EB59X

Inconel 718 is a very difficult material to machine.
As a result of testing of high and low content PCBN grades
The EB59X low-content grade with less built-up edge showed better performance.

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CBN vol(%)

90%

Wear resistance

Continuous - Heavy Interrupted

Characteristics

EB210 is highly recommended for precise control of heat-treated steel and cast iron. This grade has the great combination of CBN particle binder.

Chemical wear resistance

Fracture toughness

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PM HIGH

PCBN GRADE FOR POWDER METAL

Continuous - Light Interrupted

CBN vol(%)

70%

Wear resistance

Characteristics

The EB54X, with its small particles and excellent impact resistance, exhibits outstanding performance in intake and exhaust valve seat processing.

Chemical wear resistance

Fracture toughness

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Continuous - Light Interrupted

CBN vol(%)

80-85%

Wear resistance

Chemical wear resistance

Fracture toughness

Characteristics

EB710, a high-content grade with fine grain, demonstrates exceptional wear resistance and impact resistance. It is well-suited for continuous to interrupted machining of sintered alloys.

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