Properties and application:

Specifications:

SPMT 
Insert shape and angle
S 90° shape s 90 
Normal clearance angle
P 11° angle p 11 
Tolerance class
M l ? 0,05
m ? 0,013
s ? 0,025		 tolerance sh s 
Chipbreaker and clamping type
T type T 

 

productivity feed coolant
To increase productivity it is recommended to increase feed while respecting cutting speed Please use coolant when machining suitable material groups

 

Operations
frezowanie rowkow frezowanie wystepow   frezowanie czolowe
Slotting Shoulder milling Surfacing

 

DesignationGradelsP/rDCutting direction
SPMT 12T308 PL 30 12 3,97 0,8 - neutral

 

SPMT 12T308
Material groupGroup numberBrinell hardness
[HB]		ap [mm]Feed [mm/turn]Vc [m/min]
minmaxminmaxminmax
Low carbon steel 1 150 0,5 9,0 0,10 0,38 180 300
180 9,0 0,25 260
210 9,0 0,23 220
Alloy steel 2 180 0,5 9,0 0,08 0,22 130 200
230 9,0 0,22 180
280 0,5 9,0 0,08 0,18 100 160
320 9,0 0,18 140
High alloy steel 3 220 0,5 7,0 0,08 0,18 90 130
280 7,0 0,18 110
320 0,5 7,0 0,08 0,16 60 100
350 7,0 0,16 90
400 0,5 4,0 0,10 0,16 40 80
480 2,0 0,15 70
550 1,0 0,14 60
Austenitic stainless steel
 4 210 - 250 0,5 9,0 0,10 0,22 190 250
5 230 - 270 0,5 9,0 0,10 0,20 160 210
6 - 0,5 9,0 0,08 0,18 70 120
Ferritic stainless steel
 7 annealed 0,5 9,0 0,08 0,20 150 230
Martensitic stainless steel
 8 annealed 0,5 9,0 0,08 0,20 130 210
treated 0,5 9,0 0,08 0,20 90 150
Grey cast iron 9 140 - 230 0,5 9,0 0,10 0,25 150 240
220
190
Nodular cast iron 10 210 0,5 9,0 0,10 0,22 100 200
260 160
310 130
450 0,5 3,0 0,10 0,14 30 60
Nickel based alloys
 11 - 0,5 5,0 0,08 0,15 25 35
28 38
40 65
Titanium based alloys
 12 - 0,5 5,0 0,08 0,18 35 60
0,15 28 40