TNMG 331 DM YBC252

SKU 424-1731

TNMG 331 DM YBC252

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SKU 424-1731
Indexable Insert Category Turning Inserts
To be used on alloy steel
application semi-finish
ANSI Number TNMG-331-DM
ISO Number TNMG160404DM
Insert Style TNMG
Insert Size 331
Inscribed Circle 3/8
Insert Thickness 3/16
Thru Hole 0.15
corner radius 1/64
Insert Grade YBC252
Chip Breaker DM
Material carbide
Coating CVD Al2O3 TICN
  • ANSI #: TNMG331
  • ISO #: TNMG160404DM
  • Insert Style: TNMG
  • Insert Size: 331
  • IC: 3/8
  • Thickness: 3/16
  • Thru Hole: 0.15
  • Radius: 1/64
  • Insert Grade: YBC252
  • Chip Breaker: DM
  • Material: Carbide
  • Coating: CVD Al2O3 TICN
  • Machining Parts Material: Steel Alloy
  • Machining Process: semi-finish/medium

Product Spotlight

YBC252 Black Diamond Carbide Grade


YBC252 comprises of thick layer of TICN and Al2O3 in CVD coating process which yields anti-plastic deformation and strong cutting edge strength.  It's the preferred choice for machining steel from finishing to roughing.  It can achieve stable performance in high chip removal rate and large depth of cut or in adverse working condition, and it can also achieve dry cutting for environmental concerns

Perfect unification of toughness and anti-plastic deformation


The two areas on the outside of the red line are ductile area of rich cobalt layer while the middle section contains cubic carbides of well high-temperature behavior.  This unique skeleton design on the cutting edge improves toughness and anti-plastic deformation.


Improved Surface Roughness

before treatment

 after treatment

           Before Treatment                               After Treatment

Special surface treatment on the insert significantly lower the surface roughness, reduces the bonding between insert surface and work material, effectively improves the stability.

Combination of fibrous TICN and fine grained Al2O3 increases abrasion resistance and anti-chipping.

DM Chip Breaker 

DM chip breaker

preferred choice chip breaker on P category material semi-finish

M Class tolerance double sided chip breaker, light cutting force with wide chipping range, can achieve better result on high adhesive alloy steels.

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