CCMT 09T304 / CCMT 32.51, chip breaker BF, grade FM2543 — positive 80° rhombic turning insert.
3/8" inscribed circle, 5/32" thick, 1/64" corner radius. The BF breaker is the Finishing geometry: 0.002–0.008 ipr (0.05–0.2 mm/rev) at 0.02–0.06" (0.5–1.5 mm) depth of cut. FM2543 is a CVD grade — first-choice grade for general steel work — continuous through interrupted cuts across steel applications.
Specifications
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Insert designation (ISO): CCMT 09T304
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Insert designation (inch): CCMT 32.51
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Insert shape: 80° rhombic (C)
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Clearance angle: 7° (C)
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Tolerance class: M
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Insert type: T — with hole, countersunk one side, chipbreaker one side
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Inscribed circle (I.C.): 3/8" (9.52 mm)
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Thickness: 5/32" (3.97 mm)
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Corner radius: 1/64" (0.4 mm)
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Chip breaker: BF — Finishing
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Feed rate range: 0.002–0.008 ipr (0.05–0.2 mm/rev)
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Depth of cut range: 0.02–0.06" (0.5–1.5 mm)
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Grade: FM2543
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Coating: CVD
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ISO application range: P15–P30
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Cutting speed, non-alloy steel: 590–1250 SFM (180–380 m/min)
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Cutting speed, low-alloy steel: 380–1150 SFM (110–350 m/min)
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Cutting speed, high-alloy steel: 200–980 SFM (60–300 m/min)
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Turning insert designations explained · Using a turning formula calculator
