WNMA 080408 Grade FM2533 / WNMA 432 #FMCarbide

WNMA 080408 / WNMA 432, grade FM2533 — negative 80° trigon turning insert.

1/2" inscribed circle, 3/16" thick, 1/32" corner radius. FM2533 is a CVD grade — stable steel applications and nodular cast iron — a balance of wear resistance and chipping resistance.

Specifications

• Insert designation (ISO): WNMA 080408
• Insert designation (inch): WNMA 432
• Insert shape: 80° trigon (W)
• Clearance angle: 0° — negative (N)
• Tolerance class: M
• Insert type: A — with hole, no chipbreaker
• Inscribed circle (I.C.): 1/2" (12.7 mm)
• Thickness: 3/16" (4.76 mm)
• Corner radius: 1/32" (0.79 mm)
• Grade: FM2533
• Coating: CVD
• ISO application range: P05–P20 · K15–K35
• Cutting speed, non-alloy steel: 560–1480 SFM (170–450 m/min)
• Cutting speed, low-alloy steel: 590–1250 SFM (180–380 m/min)
• Cutting speed, high-alloy steel: 330–1080 SFM (100–330 m/min)
• Cutting speed, grey cast iron: 390–980 SFM (120–300 m/min)
• Cutting speed, nodular cast iron: 390–920 SFM (120–280 m/min)

Tool holders that accept this insert

18 RMC toolholders in stock take this insert — 80° trigon, 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

Boring bars and interchangeable heads. 9 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 →