Original Iscar 643-NM IC8250 Carbide Insert | Steel CNMM CNMM 643-NM IC8250

Name: Original Iscar 643-NM IC8250 Carbide Insert | Steel CNMM CNMM 643-NM IC8250
Brand: Iscar
SKU: CNMM 643-NM IC8250
Rating: 4.5 (24 reviews)

Brand: Iscar

$51.70

★★★★⯨ 4.5 (24 reviews)

Buy original Iscar 643-NM (CNMM 643-NM IC8250) IC8250 Carbide Insert for steel machining. TiCN coating. From $51.7. Free shipping. Genuine Iscar product.

500 in stock

Need a different quantity, brand or specification?Send us the part number — typical reply time: a few hours.

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Iscar 643-NM IC8250 – Carbide Insert

Specifications:
Subcategory: Indexable Inserts & Blades
Leaf Category: Turning & Boring Carbide Inserts
Brand: ISCAR
Model #: 5550274
Tool Material: Carbide
Unit of Measure: Each
Inventory Status: Order as needed
Catalog Page: 9923
Grade: IC8250
Chipbreaker 3875: NM
Coating: CVD / TiCN+Al2O3+TiN
Insert IC: 3/4″
Insert Radius: 0.047″
Insert Shape & Angle: 80° Diamond
Insert Size: 643
Insert Style: CNMM
Insert Thickness: 1/4″
Relief Angle: 0°
Insert #: CNMM 643-NM
Weight: 5.9
Designation: CNMM 643-NM IC8250

Industry references for Iscar 643-NM: Iscar Turning Insert: CNMM 643-NM, Carbide TiCN, Al2O3 & TiN Finish, 19.30 mm Long, 80.00 deg C – Diamond (Rhombic) 80-Deg, Series Isoturn ISCAR 5550274 – CNMM 643-NM IC8250, 80° Diamond, Indexable Carbide Turning / Boring Insert Item # 19-168-354 Write a review Ask a question A tough substrate with a cobalt enriched layer combined with multi-layer CVD coating. Recommended

Key Specifications

Brand	Iscar
Model	643-NM
Grade	IC8250
Coating	TiCN
Workpiece Materials	Steel
Application	Medium Turning
Geometry	Chip breaker: nm
Quantity	1 PCS

Grade IC8250 Characteristics

Iscar IC8250 uses TiCN coating tuned for medium turning on steel. The chemistry favors edge stability under interrupted cutting and resists thermal cracking on longer passes.

Features & Benefits

100% Genuine Iscar – Original product with full quality guarantee, traceable batch.
Bulk Pricing Available – Discount tiers for production-volume orders; contact sales.
QC Inspected – Each batch sampled for edge profile, dimensional accuracy, and coating adhesion.
Predictable Wear – Even flank wear pattern simplifies tool-life prediction and scheduling.
Precision Ground – Tight dimensional tolerances for repeatable performance across batches.
Optimized Chip Breaker – Engineered chip geometry reduces re-cutting and machine downtime.

Recommended Applications

Medium Turning of steel in production CNC lines
Useful for batch production where tool-life predictability matters
Performs across a range of cutting speeds and feed rates
CNC lathe and machining center compatible

Buying Considerations

Single-pack option — useful for prototype runs or qualification before bulk commitment. Mid-tier pricing reflects Iscar’s production-grade tolerances rather than economy substrate.

Reminder: Holder rigidity, lead angle, and approach all influence how this insert wears. Pair with a holder rated for the same cutting forces.

Weight	5.9 kg
Dimensions	15 × 18 × 4 cm

SKU: CNMM 643-NM IC8250 Category: Insert Brand: Iscar

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