ISCAR Cutting Tools — Complete Product Guide
Summary
ISCAR is headquartered in Tefen, Israel, in the Western Galilee industrial park it effectively built. Founded in 1952 by Stef Wertheimer, it's now part of IMC Group — the holding company that also owns Ingersoll, TaeguTec, Tungaloy, Unitac, and several other tooling brands. Berkshire Hathaway bought IMC Group in 2006 for roughly $4 billion, which means Warren Buffett owns the carbide on your lathe. ISCAR is the crown jewel of that portfolio.
Among the three Tier-1 global leaders — Sandvik Coromant, Kennametal, and IMC/ISCAR — ISCAR is the geometry innovator. Where Sandvik leads with application data and Kennametal leads with distribution, ISCAR leads with creative insert designs. Chatterfree unequal-helix milling, the self-clamping Sumo Grip pocket, the Tang Grip and Cut Grip parting systems — these are industry-standard concepts that competitors have been copying for two decades. If a machinist tells you "I tried a weird-looking ISCAR insert and it worked better than anything else," that's not unusual.
ISCAR's grade system is the most intimidating in the industry to decode at first glance. Once you understand the pattern it's workable, but there's no shortcut — you need to know the coating technology, the substrate, and the application class to pick correctly.
What ISCAR is best for
- Grooving and parting — Cut Grip, Tang Grip, and Do Grip are reference-level solutions for external grooving, full-radius profiling, and deep-groove parting. Most competing systems are playing catch-up.
- Heavy roughing in steel and stainless — Millshred, Heli3000, and the Sumo Tec grade family handle interrupted cuts and scale well.
- Chatterfree milling — especially in thin-wall aerospace structures and long-reach applications where chatter is the limiting factor, not tool wear.
- Micro and small-part machining — NanoTurn and NanoMill cover turning and milling at diameters and depths where most catalogs go silent.
- High-temp alloy and titanium — IC908 and IC907 are competitive with anything in the market for ISO S applications.
Where ISCAR is less dominant: commodity large-volume turning of mild steel where Kennametal KC-series pricing wins, and boring-bar damping where Sandvik Silent Tools is still the benchmark.
Brand architecture
Grooving and Parting
Cut Grip — ISCAR's most-copied product line. A self-clamping insert pocket for external grooving and turn-groove-turn operations. Available in narrow widths (1.5 mm and up) and handles profiling within the groove. The geometry options are extensive — straight, rounded, chip-groove, full-radius.
Tang Grip — single-ended parting inserts with a tang that locks into the blade. Stronger clamping than a standard parting system. Better for deep parting where vibration destroys conventional tools.
Do Grip — deep grooving and parting on large diameter parts. Longer insert, higher rigidity requirement, designed for parts where Cut Grip runs out of depth.
Swap Grip — bi-directional grooving on multi-task machines, used where approach direction changes mid-operation.
Milling
Chatterfree line — ISCAR's variable helix / variable index end mills and helical cutters. Unequal spacing between flutes breaks up the harmonic frequency of the cut. This is a real engineering solution, not a marketing term. It works.
Heli2000 / HeliMill — indexable shoulder milling systems with helical inserts. Positive cutting geometry, good for stainless and light-alloy applications. Heli2000 uses smaller inserts at higher density; HeliMill is the heavier-duty variant.
Heli3000 — larger positive-rake helical insert system for heavier cutting depths in carbon and alloy steel.
Millshred — high-feed roughing mill with serrated insert edges for chip-breaking in deep-axial, light-radial passes. Comparable in concept to Kennametal Mill 1-10 but with ISCAR's geometry on the insert.
MULTI-MASTER — modular solid-carbide heads on steel or carbide shanks. ISCAR's equivalent of the Kennametal KenTIP concept applied to milling. Wide range of geometries available on the same shank.
Turning
ISCAR's turning line is extensive but less differentiated from competitors than grooving. Standard ISO-pattern inserts (CNMG, DNMG, WNMG, TNMG, VBMT) in the IC-series grades. The geometry designations — GFF, GF, FF, M, RM — indicate chip-breaker aggressiveness from finishing to roughing.
NanoTurn — small-part turning inserts for Swiss-type lathes and sliding-headstock machines. Widths as narrow as 0.5 mm. Used in medical device, watchmaking, and micro-connector work.
Drilling
Sumocham — ISCAR's exchangeable-head drilling system. Carbide head + steel body, similar to KenTIP FS and Sandvik CoroDrill Meister. Self-clamping head retention — no set screw needed, the cutting force locks the head.
Chatter Free Drill — four-flute solid carbide drills with variable helix for vibration reduction in difficult materials.
Grade system
ISCAR grade codes follow the pattern IC + number, sometimes with a letter suffix indicating coating type or application modifier.
IC-series grade families
| Grade | Coating type | Primary application | ISO class |
|---|---|---|---|
| IC5005 | CVD multi-layer TiCN/Al2O3 | Steel turning, continuous | P05–P15 |
| IC5010 | CVD multi-layer | Steel turning, general | P10–P25 |
| IC5400 | CVD with post-coat treatment | Interrupted steel cutting | P25–P40 |
| IC807 | PVD TiAlN | Stainless steel | M10–M30 |
| IC908 | PVD TiAlN+Si3N4 (nanocomposite) | Ti alloys, Ni superalloys | S05–S20 |
| IC907 | PVD TiAlN | Stainless + hi-temp alloys | M15–S25 |
| IC3028 | CVD | Cast iron | K10–K25 |
| IC328 | PVD | Hardened steel, interrupted | H05–H20 |
IC908 is the grade most machinists associate with ISCAR's reputation in aerospace. ISCAR positions its coating as nanocomposite-structured PVD with higher hot-hardness than standard TiAlN, and shops running Ti-6Al-4V and Inconel 718 typically report good edge retention versus competing PVD grades. If someone says "ISCAR is good for aerospace," IC908 is usually why.
Sumo Tec
"Sumo Tec" is ISCAR's proprietary edge preparation and post-coat treatment process, applied to selected IC grades. A fine honing radius is applied to the cutting edge, then the coating is treated to reduce residual tensile stress. The result is better coating adhesion on interrupted cuts. Grades with Sumo Tec in the name (e.g., IC5500 Sumo Tec) are the heavy-duty variants of a base grade.
H600 ceramic
H600 is ISCAR's SiAlON ceramic grade for high-temperature alloy roughing — Inconel, Waspaloy, René alloys — where carbide surface speeds are too slow for production. Typical SFM range is 800–1500 SFM on nickel superalloys, which is 6–10x faster than carbide. Requires rigid setup, no coolant (thermal shock risk), and aggressive depth of cut to generate enough heat for the ceramic to cut cleanly.
Speeds and feeds baseline
Starting points — adjust for your setup, coolant, and machine rigidity:
| Material | Grade | Operation | Surface speed | Feed |
|---|---|---|---|---|
| 4140 steel annealed | IC5010 | Turning, roughing | 700–950 SFM | 0.008–0.015 IPR |
| 304 stainless | IC807 | Turning, roughing | 400–550 SFM | 0.006–0.012 IPR |
| Ti-6Al-4V | IC908 | Turning, roughing | 180–260 SFM | 0.005–0.010 IPR |
| Inconel 718 | IC908 | Turning, semi-rough | 80–130 SFM | 0.004–0.008 IPR |
| Inconel 718 | H600 | Roughing, ceramic | 900–1300 SFM | 0.005–0.012 IPR |
| Gray cast iron | IC3028 | Turning | 700–1100 SFM | 0.008–0.018 IPR |
These are catalog midpoints. ISCAR's ITA (ISCAR Tool Advisor) software will generate tighter numbers for a specific insert geometry and cut condition.
When to use ISCAR vs. alternatives
- vs. Sandvik Coromant: Sandvik's turning data and boring-bar damping are harder to beat. ISCAR wins on grooving/parting systems and creative insert geometry. Many shops run both — ISCAR on the grooving station, Sandvik on the turning and boring.
- vs. Kennametal: Kennametal is usually cheaper and easier to source from US distributors. ISCAR's IC908 and Chatterfree geometry genuinely outperform Kennametal's equivalents in aerospace materials. In commodity steel work, the difference is small.
- vs. Walter: Walter's Tiger·tec Silver is strong on steel milling and drilling. ISCAR is stronger on parting and grooving and hi-temp turning.
- vs. IMC Group siblings (TaeguTec, Tungaloy): TaeguTec and Tungaloy are also IMC Group — they share some substrate technology. ISCAR gets the newest grade developments first. TaeguTec is the value tier; Tungaloy (Japanese) brings its own insert geometry heritage.
Related articles
- CNMG inserts — geometry and grade selection
- Grooving and parting inserts — system selection guide
- Insert selection guide — picking grade, geometry, nose radius
- Machining titanium Ti-6Al-4V
- Machining Inconel 718
- Ceramic inserts — when and how to use them
- Chatterfree milling — variable helix and variable index explained
Ask 4man
ISCAR's grade catalog is wide and the application codes aren't obvious. Tell 4man your material, operation, and machine, and it will cross-reference ISCAR's grade families against what's worked in similar setups — including whether IC908 or a Sumo Tec variant is the better call for your specific cut condition.