Carbide Insert For Interrupted Cuts - Tough Grade

Carbide Insert for Interrupted Cuts - Tough Grade

Premium Tough-Grade Carbide Inserts for Heavy Interruptions & Maximum Uptime

When the cut is stop-go, the insert must be TOUGH.
Our Carbide Insert for Interrupted Cuts – Tough Grade is micro-grain WC–Co produced by 10-MPa hot-isostatic pressing, then TiAlN/TiSiN nano PVD coated for 1 200 HV surface hardness. The result: 35 % higher transverse-rupture strength than standard CVD inserts, 40 % longer tool life on scale, forgings, cast skins and cold-work seams-exactly the pain-points of interrupted cuts.

Key Advantages
✓ Sub-micron substrate-TRS ≥ 3 800 MPa
✓ High-edge-toughness geometry eliminates micro-chipping
✓ Nano-PVD coating resists thermal fatigue at 900 °C
✓ Mirror-polished flank reduces built-up edge on low-carbon steels
✓ Stocked in 40 standard shapes for instant dispatch

Typical Applications
• Face milling of forged crankshafts
• Rough turning of weld-overlayed rolls
• Grooving of nodular cast-iron hubs
• Interrupted cut gear-hobbing on 42CrMo4
• Heavy-duty milling of ASTM A36 flame-cut edges

Industry Benchmark Grades Comparison
Grade | ISO Range | Substrate TRS | Coating | Work-piece | Interrupted-Cut Performance*
CUT-TG1 | K20–K30 | 3 800 MPa | TiAlN | Steel/CI | ★★★★★
CUT-TG2 | P30–P40 | 3 650 MPa | TiSiN | SS/Low-C | ★★★★☆
CUT-TG3 | M25–M35 | 3 700 MPa | AlCrN | Exotics | ★★★★☆
*Internal milling test: vC 180 m min-1, f 0.25 mm, ae 4 mm, scale interruption 2 mm.

Universal Insert Shape & Size Matrix (mm)
Shape | CNMG | SNMG | TNMG | WNMG | DNMG | RCMT | VBMT
IC | 12.7 | 12.7 | 9.525| 12.7 | 12.7 | 8 | 12.7
Thickness | 4.76 | 4.76 | 3.97 | 4.76 | 4.76 | 3.18 | 3.18
Corner | 0.8 | 0.8 | 0.4 | 0.8 | 0.8 | 0.4 | 0.4
All above stocked in Tough Grade; other sizes 48 h lead-time.

Cutting Data Starting Point – Carbide Insert for Interrupted Cuts – Tough Grade
Material | vC (m/min) | f (mm/rev) | ap (mm) | Coolant
Low-alloy steel | 120–180 | 0.15–0.30 | 1–4 | Wet/Min.
Ductile iron | 80–120 | 0.20–0.35 | 2–5 | Dry/Wet
Stainless 304 | 60–100 | 0.12–0.25 | 1–3 | Wet
Hardened steel 45 HRC | 40–70 | 0.08–0.15 | 0.5–2 | Mist

Customer Success Snapshot
"Tool life jumped from 18 to 27 parts after we swapped to CUT-TG1 CNMG120408. Edge chipping on the forging skin disappeared completely."
-Jörg B., CNC Supervisor, German crank-line plant

Call to Action
Need inserts that survive the hammer-blow of interrupted cuts?
Send us your drawing, material grade and machine type now-our engineers will quote the exact Carbide Insert for Interrupted Cuts – Tough Grade within 12 hours.

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