DNMG 150608 / DNMG 442, chip breaker BG, grade FM324 — negative 55° rhombic turning insert.
1/2" inscribed circle, 1/4" thick, 1/32" corner radius. The BG breaker is the medium machining geometry: 0.008–0.016 ipr (0.2–0.4 mm/rev) at 0.06–0.16" (1.5–4 mm) depth of cut. FM324 is a PVD grade — universal multi-purpose grade for mid and low cutting speeds — low-carbon and alloyed steel, stainless, cast iron, Inconel and titanium alloys.
Specifications
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Insert designation (ISO): DNMG 150608
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Insert designation (inch): DNMG 442
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Insert shape: 55° rhombic (D)
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Clearance angle: 0° — negative (N)
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Tolerance class: M
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Insert type: G — with hole, chipbreaker both sides
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Inscribed circle (I.C.): 1/2" (12.7 mm)
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Thickness: 1/4" (6.35 mm)
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Corner radius: 1/32" (0.79 mm)
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Chip breaker: BG — Steel — medium machining
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Feed rate range: 0.008–0.016 ipr (0.2–0.4 mm/rev)
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Depth of cut range: 0.06–0.16" (1.5–4 mm)
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Grade: FM324
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Coating: PVD
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ISO application range: P10–P30 · M05–M25 · S05–S25 · H20–H40
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Cutting speed, non-alloy steel: 390–820 SFM (120–250 m/min)
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Cutting speed, low-alloy steel: 230–750 SFM (70–230 m/min)
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Cutting speed, high-alloy steel: 230–590 SFM (70–180 m/min)
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Cutting speed, ferritic & martensitic stainless: 200–590 SFM (60–180 m/min)
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Cutting speed, austenitic stainless: 200–490 SFM (60–150 m/min)
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Cutting speed, grey cast iron: 200–520 SFM (60–160 m/min)
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Cutting speed, nodular cast iron: 200–390 SFM (60–120 m/min)
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Cutting speed, titanium & super-alloys: 110–200 SFM (35–60 m/min)
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Cutting speed, hardened material: 130–260 SFM (40–80 m/min)
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