DNMG 150404 Chip Breaker BF GradeFM524 / DNMG 431 BF #FMCarbide

DNMG 150404 Chip Breaker BF Grade FM524 / DNMG 431 BF #FMCarbide

Turning Insert
$6.40 per insert$64.00 per box of 10
Grade
Chip Breaker
Item #

Sold in boxes of 10 inserts. Prices are shown per insert. Minimum order: 10 inserts. Order in multiples of 10.

Quantity (inserts)
- +

10 inserts = 1 box · 20 inserts = 2 boxes

DNMG 150404 / DNMG 431, chip breaker BF, grade FM524 — negative 55° rhombic turning insert.

1/2" inscribed circle, 3/16" thick, 1/64" corner radius. The BF breaker is the finishing geometry: 0.002–0.010 ipr (0.05–0.25 mm/rev) at 0.02–0.06" (0.5–1.5 mm) depth of cut. FM524 is a CVD grade — gray cast iron and very stable steel — the hardest substrate with CVD coating for extreme wear resistance.

Specifications

  • Insert designation (ISO): DNMG 150404
  • Insert designation (inch): DNMG 431
  • Insert shape: 55° rhombic (D)
  • Clearance angle: 0° — negative (N)
  • Tolerance class: M
  • Insert type: G — with hole, chipbreaker both sides
  • Inscribed circle (I.C.): 1/2" (12.7 mm)
  • Thickness: 3/16" (4.76 mm)
  • Corner radius: 1/64" (0.4 mm)
  • Chip breaker: BF — Steel — finishing
  • Feed rate range: 0.002–0.010 ipr (0.05–0.25 mm/rev)
  • Depth of cut range: 0.02–0.06" (0.5–1.5 mm)
  • Grade: FM524
  • Coating: CVD
  • ISO application range: P01–P10 · K10–K25
  • Cutting speed, non-alloy steel: 720–1570 SFM (220–480 m/min)
  • Cutting speed, low-alloy steel: 720–1380 SFM (220–420 m/min)
  • Cutting speed, gray cast iron: 560–1380 SFM (170–420 m/min)
  • Cutting speed, nodular cast iron: 390–1340 SFM (120–410 m/min)

Tool holders that accept this insert

34 RMC toolholders in stock take this insert — 55° rhombic, 0° — negative clearance, 1/2" inscribed circle, 3/16" thick. Pick by the shank your turret takes.

RMC square-shank toolholders — made in the USA

3/4" shank MDGNL 12-4B · MDGNR 12-4B · MDJNL 12-4B · MDJNL 12-4C · MDJNR 12-4B · MDJNR 12-4C · MDPNN 12-4B · MDQNL 12-4B · MDQNR 12-4B
1" shank MDGNL 16-4D · MDGNR 16-4D · MDJNL 16-4D · MDJNR 16-4D · MDPNN 16-4D · MDQNL 16-4D · MDQNR 16-4C · MDQNR 16-4D
1-1/4" shank MDJNL 20-4D · MDJNL 20-4E · MDJNR 20-4D · MDJNR 20-4E · MDPNN 20-4D · MDQNL 20-4D · MDQNR 20-4D
1-1/2" shank MDJNL 24-4D · MDJNL 24-4E · MDJNR 24-4D · MDJNR 24-4E · MDPNN 24-4D · MDQNL 24-4D · MDQNR 24-4D
1" x 1-1/4" shank MDJNL 85-4D · MDJNR 85-4D · MDPNN 85-4D

Boring bars and interchangeable heads. 78 more RMC tools take the same insert for internal turning. See RMC boring bars →

TURNING KNOW-HOW

Get more from your turning inserts.

Practical guides to choosing, understanding and using your inserts.

01 / SELECTION

Grades & chip breakers

Explore the grade and chip-breaker selection chart for your turning operation.

Explore the chart 02 / INSERT CODES

Know your insert

Understand turning-insert designations and what the letters and numbers mean.

Read the guide 03 / CUTTING PARAMETERS

Turning calculations

Learn how to use a turning formula calculator to work through the numbers.

Explore the formulas

Availability and Shipping

FM Carbide maintains stock in the USA. If this item is not in stock, estimated time to ship is 14–21 calendar days.

Estimated time to ship is measured in calendar days, from order placement until your order is handed to the carrier. Carrier transit time is additional. Orders may ship sooner. We accept orders awaiting replenishment; please contact us before ordering if you need a specific shipping date.

See our Shipping Policy for details.

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