Highlights

ISCAR is introducing the ECY-S5 – a family of new solid carbide endmills for milling austenitic, duplex, cast and precipitation hardening (PH) stainless steels (ISO M group of applications).
The new ECY-S5 endmills are suitable for a wide range of milling operations, from rough to finish machining and including trochoidal milling.
The new endmills feature a unique patent-pending design that delays wear and significantly improves tool life.

Features

• Unique core taper shaped sub-flute contributes to better chip evacuation, particularly on full depth machining ( 2XD)
• 5 flutes with variable angular pitch and different helix portions
• The combination of the new AlTiCrSiN PVD coating with a hard submicron grade IC08, creates a high wear resistant grade IC608
• Accuracy: e8 tolerance limits for the nominal endmill diameter (D) and h6 for the endmill shank diameter
• Edge wear transition mechanism
• Varying rake angles create softer cut while taking wide chips

Bi-directional Wear Guidance Design

• Controlled wear transmission in diverging directions
• Provides uniform wear to increase overall tool life

Advantages

• The sub-flute wear control mechanism combined with variable and different rake and relief angles considerably increases tool life
• Variable and different helix portions inhibit resonance and increase chip evacuation space proximate to the cutting end face
• Reinforced core taper improves structural strength
• Performance benefits are particularly notable when milling at depth of cut of approximately 2×D

Typical cutting data when milling ISO M materials:

	Shoulder milling			DC=8-10 mm	DC=12-16 mm
ECY-S5	Vc (m/min)	Ap	Ae, max	Fz (mm/t)	Fz (mm/t)
	100-150	~2×D	0.4×D	0.03-0.045	0.04-0.055

	Shoulder milling		DC=8-10 mm		DC=12-16 mm
ECY-S5	Vc (m/min)	Ap	Fz (mm/t)	Ap max	Fz (mm/t)	Ap max
	70-90	D	0.02-0.04	0.25×D	0.03-0.04	0.25×D

	HSM / Trochoidal milling			DC=8-10 mm	DC=12-16 mm
ECY-S5	Vc (m/min)	Ap	Ae, max	Fz (mm/t)	Fz (mm/t)
	180-250	~2×D	0.1×D	0.05-0.12	0.06-0.13

Application report:
Application: Shoulder milling
Material: AISI/SAE 304 (DIN X5CrNi 18 9, W.-Nr. 1.4301)
Coolant: Emulsion
Pressure: 8 bar
Machine type: Vertical machining center
Brand: HAAS
Spindle adaptation: BT40

Manufacturer	ISCAR - Actual	Other - Competitor
Tool	ECY-S5 16-32C16CFR.8-92 608	Competitor
Diameter (mm)	16	16
No. of Flutes	5	5
Carbide Grade	608	Coated
Edge Preparation	Standard	Standard
Tool Stability	Fair	Fair
Overhang (mm)	45	45
Cutting Speed (m/min)	226	226
Cutting Speed (m/min)	226	226
Spindle Speed (rpm)	4,496	4,496
Depth of Cut (mm)	28	28
Width of Cut (mm)	0.6	0.6
Machining Length (mm)	600	600
Feed per Tooth (mm/t)	0.09	0.09
Table Feed (mm/min)	2,023	2,023
Number of Passes	10	10
Parts per Cutter	44	17
Avg. Chip Thickness (mm)	0.02	0.02
Surface Quality	Good	Good
Chip Type	Comma/Helical	Comma/Helical
Wear	Crater Wear	Crater Wear
Reason for Stopping the Test	Wear	Wear
Metal Removal Rate (cm3/min)	33.98	33.98

The tool from a competitor showed excessive wear formation after 15 parts and couldn’t exceed 17 parts.
ECY-S5-CFR
5 Flute Endmills with Different Helix for Milling Austenitic, Duplex, Cast and Precipitation Hardening Stainless Steels (1) Number of flutes
(2) Maximum ramping angle

The NPA02-2019's pdf file: View (PDF) or Download (ZIP)