CNMG 120408-MR ET21P Carbide Roughing Inserts Edgetech
CNMG 120408-MR ET21P Carbide Roughing Inserts Edgetech

CNMG 120408-MR ET21P Carbide Roughing Inserts Edgetech

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£13.59
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Part Number
TI00660
Shape
CNMG
Relief Angle
Negative = 0° (Clamp or Lever)
Edge Length
12 (12.7mm)
Thickness ISO/mm
04 (4.76mm)
Radius
08 (0.8mm)
Grade
ET21P
Chipbreaker Code
MR
Interrupted Cut?
No - Stable conditions
Will Cut Steel? (P-Blue)
Yes
Will Cut Stainless Steel? (M-Yellow)
Yes - Excellent
Will Cut Cast Iron? (K-Red)
No
Will Cut Heat Resistant Alloys? (S-Orange)
Yes
Will Cut Non-Ferrous? (N-Green)
No
Will Cut Hardened Steel? (H-Grey)
No
Europa Edgetech
Information
ISO DesignationEdge
Length
LE 
(mm)
Thickness
S (mm)
Radius
RE(mm)
ChipbreakerGrade
CNMG120408-MR12 (12.7)04 (4.76)08 (0.8)MRET21P


Grade: ET21P
Type: Single layer PVD coated grades are designed to balance edge strength with extended tool life..
Colour: Gold
Grade Summary: ET21P Optimised grade for cutting of stainless steel at high cutting speeds.
Type of Cut: MR chipbreaker - Roughing of Stainless Steels and scale/skin HRSA
Best for: Stainless Steels.

Technical Data & Info

Feed Rate & Depth of Cut

fn (mm/rev)0.30 - 0.55
ap (mm)1.0 - 5.5

Speeds Chart

Material VDI GroupMaterial DesignationMaterial ConditionHardnessGradeSpeed M/Min
12Stainless steel & Cast stainless steelFerritic/Martensitic, Annealed≤200 HBET21P160 - 220
13Stainless steel & Cast stainless steelMartensitic, Quenched & Tempered≤240 HBET21P160 - 220
14Stainless steel & Cast stainless steelAustenitic≤180 HBET21P100 - 200
Turning Calculator
Document

Turning Speeds Calculator

RPM
mtrs/min
mm

Results

RPM
mtrs/min
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