NACHI-FUJIKOSHI CORP.

• NACHI Tool Solutions

A 3-flute drill with an optimized flute geometry and cutting-edge design for an excellent cutting balance

High-accuracy drilling Features a 3-flute design that achieves excellent cutting balance, as well as high-accuracy drilling capable of a reamerless process up to a depth of 5D Handles drilling up to a depth of 5D Optimized flute geometry and cutting-edge design improve chip fragmentation and evacuation for stable drilling

AQUA EX coating with enhanced resistance to heat and wear

AQUA EX coating

• Features a special lubrication film and smoothing treatment for excellent chip evacuation
• Ensures high oxidation resistance (1,100°C) by adding a layer with high Al content
• Controls crack propagation with a multilayered structure. Optimizes compressive strength for increased film hardness (3,300HV).
  Increases resistance to wear.

Oxidation resistance evaluation

Competitor products (listed oxidation resistance at 1,200°C) Total oxidation

AQUA EX coating Approx. 50% oxidation

Applicable work materials

Low-carbon steels Soft steels SS400, S10C	Carbon steels Alloy steels S45C, SCM440	Pre-hardened steels High alloy steels SUJ, NAK	Tempered steels   SKD, SKH	Hardened steels   Hardened steels
150HB	225HB	275HB	30 40HRC	40 50HRC	50 65HRC
Stainless steels		Heat-resistant alloy Ti/Ni Alloys	Cast iron FC/FCD	Aluminum alloy AC/ADC	Copper/copper alloy Cu
SUS304	SUS420
×		×		×	×

: optimal : applicable ×: not applicable No mark: not recommended