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Iscar VNMG 12T304-NF IC907
Discover the Iscar VNMG 12T304-NF IC907 – a 35° rhombic, negative-relief carbide insert with TiAlN coating and tough IC907 grade. Designed for semi-finishing & finishing of steel, stainless and hard alloys. Lower cost per part, less downtime. Stock available via CNC Tools Depot.
Unlock higher precision, longer tool life and better surface finish with the Iscar VNMG 12T304-NF IC907 cutting insert – now featured at CNC Tools Depot, India’s largest marketplace for carbide inserts.
Hook / Attention Line
Say goodbye to frequent tool changes, unexpected downtime and inconsistent finishes. With the VNMG 12T304-NF IC907 you get longer tool life, faster cutting, and a reduced cost per component – making it a smart investment for any precision turning operation.
Key Features & Specs
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Insert style: VNMG 12T304-NF (35° rhombic, negative-relief) – designed for external turning.
Grade: IC907 – a tough sub-micron substrate, PVD-coated with TiAlN. Suitable for turning heat-resistant alloys, austenitic stainless steel and hard steel at low to medium cutting speeds.
Coating: TiAlN. -
Geometry / key dimensions: Cutting edge length ~12.4 mm; inscribed circle diameter ~7.15 mm; thickness ~3.97 mm; corner radius RE = 0.4 mm; clearance angle 0°; neutral hand.
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Chip-breaker type: NF (for semi-finishing/finishing applications, and low cutting force due to very sharp edge + positive rake).
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Application: External turning (semi-finishing / finishing) of steel, stainless steel, cast iron, hard materials, aluminium/non-ferrous, super-alloys/ titanium.
Why It’s a Best Seller
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Because of the sharp edge geometry and positive rake in the NF chipbreaker, cutting forces are lower – meaning smoother cuts, less vibration and better surface finishes.
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The IC907 grade with TiAlN coating offers high wear resistance and toughness – resisting crater wear and edge chipping when machining stainless, heat-resistant alloys or harder steels.
Double-sided (both sides usable) means you get more inserts per purchase. -
Less downtime = fewer insert changes, fewer tool-holder resets, better uptime for production.
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Excellent surface finish even at lower feeds/depths makes it a go-to for precision turning where quality matters.
🏭 Application Industries
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Automotive: cylinder heads, crankshafts, turbocharger housings, steering knuckles
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Aerospace: titanium/aluminium structural components, landing gear parts, blades
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Die & Mould: hardened mould steel finishing, pre-hardened turning, steel cores
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General Engineering: stainless shafts, high-strength alloy components, cast iron housings, super-alloy parts
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Frequently Asked Questions
The IC907 grade is specified for heat-resistant alloys, austenitic stainless steels and hard steels (i.e., ISO P10-P30 for steel, M05-M20-M20 for stainless) at low-to-medium speeds.
It also suits cast iron and non-ferrous materials, according to the product spec sheet
This insert has a corner radius (RE) of 0.4 mm and a clearance angle major (AN) of 0° (negative-relief) as per the catalogue.
The NF chip-breaker line for this insert family is designed for semi-finishing and finishing, enabling lower cutting forces and sharper edges. This supports smoother machining, better surface finish and reduced tool-holder stress.
The VNMG 12T304-NF IC907 is primarily designed for semi-finishing/finishing. Although the IC907 grade is tougher than typical finishing grades (so it can cope with some adverse conditions), for heavy roughing or highly interrupted cuts you may consider a roughing-specific grade. MachiningDoctor notes the IC907 grade is best for low-to-medium cutting speeds
Because the sharp geometry + tough coating and substrate reduce tool wear and edge chipping, you achieve longer insert life and fewer machine pauses for tool changes. That means more parts per insert, fewer insert change overs, less downtime and better consistency—driving down cost per component. With better finishes you also reduce rework.
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