WALTER WNMG080404-FM5 WSM20S Turning Insert – 10 pcs

$116.82 USD

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Description

WALTER WNMG080404-FM5 WSM20S Turning Insert (10pcs)

The WALTER WNMG080404-FM5 WSM20S is a high-performance negative-style carbide turning insert designed for stainless steel (M) and steel (P) machining. Equipped with the FM5 chipbreaker for low cutting forces and excellent chip control, and built with the advanced WSM20S PVD-coated grade, this insert delivers exceptional reliability in finishing and semi-finishing operations.

Product Features

  • Optimized FM5 chipbreaker for low cutting force and stable chip flow.
  • WSM20S PVD-coated grade for stainless steel and steel turning.
  • Excellent thermal resistance and edge stability.
  • Outstanding performance in finishing and semi-finishing operations.
  • Ideal for machining 304, 316, duplex, alloy steels, and more.
  • Packaged in a box of 10 inserts.

Technical Specifications

Insert Type WNMG
Size 080404
Chipbreaker FM5 (Finishing/Mild Cutting)
Grade WSM20S (PVD Tiger·tec® Silver)
Material Class Stainless Steel (M), Steel (P), Superalloys (S)
Coating PVD AlTiN-based multilayer
Geometry Negative style, double-sided
Application Finishing & Semi-finishing
Packaging 10 inserts per box

WSM20S Grade – Performance & Benefits

WSM20S is Walter's premium PVD-coated carbide grade designed for universal machining of stainless steel (M) with strong performance in steel (P) and superalloys (S). Its advanced coating provides exceptional wear resistance, heat resistance, and toughness.

Material Performance Characteristics

  • High resistance to built-up edge formation in stainless steel.
  • Excellent edge stability for interrupted and unstable cuts.
  • Superior thermal control at high cutting temperatures.
  • Optimized substrate for toughness and reduced chipping.
  • Versatile for multiple material groups with stable tool life.

Suitable Workpiece Materials

Stainless Steel (M) ⭐⭐⭐⭐⭐ Primary application
Steel (P) ⭐⭐⭐⭐ Excellent for finishing
Superalloys (S) ⭐⭐⭐ Suitable for light finishing
Cast Iron (K) ⭐⭐ For general machining (not optimized)

Recommended Cutting Parameters

A. Stainless Steel (ISO M)

  • Finishing: Vc 80–160 m/min, f 0.08–0.18 mm/rev, ap 0.1–0.8 mm
  • Semi-finishing: Vc 70–150 m/min, f 0.15–0.25 mm/rev, ap 0.5–2.0 mm
  • Medium roughing: Vc 60–130 m/min, f 0.20–0.30 mm/rev, ap 1.0–3.0 mm

B. Steel (ISO P)

  • Finishing: Vc 120–220 m/min, f 0.08–0.18 mm/rev, ap 0.2–1.0 mm
  • Semi-finishing: Vc 100–180 m/min, f 0.15–0.30 mm/rev, ap 0.5–2.5 mm
  • Light roughing: Vc 80–160 m/min, f 0.20–0.35 mm/rev, ap 1.0–3.0 mm

C. Cast Iron (ISO K)

  • General turning: Vc 140–260 m/min, f 0.12–0.25 mm/rev, ap 0.2–2.0 mm

Recommended Toolholders

  • Walter WL / SVJBR / MVJNR turning toolholders
  • Any standard WNMG0804 negative-style toolholder
  • CNC lathes and turning centers

Why Choose WALTER WNMG080404-FM5 WSM20S?

  • Engineered for stainless steel stability and reliability.
  • Premium PVD Tiger·tec® Silver grade with long tool life.
  • Excellent chip control with FM5 geometry.
  • Perfect for finishing and semi-finishing operations.
  • Suitable for high-precision CNC machining.