WIDIA - soustružení | KL-TECH s.r.o. | www.klte.cz widia-soustruženi | Page 121
WIDIA ™ VariTurn ™
Steel • Carbon, Alloy, and Tool Steels up to 450 HB (48 HRC)
(continued)
Low-Carbon (<0.3% C)
and Free-Machining Steel
Material
Group
P0/P1
grade
speed — m/min
135
180
225
275
320
P2
P3
P4
P5
248
189
grade
speed — m/min
135
180
225
275
320
P6
widia.com
360
410
455
Starting Conditions
495
m/min
TN10P 212
TN20P 176
TN30P 135
grade
speed — m/min
135
180
225
275
320
360
410
455
Starting Conditions
495
m/min
TN10P 152
TN20P 140
TN30P 108
grade
speed — m/min
60
90
120
150
180
210
240
270
Starting Conditions
300
m/min
TN10P 116
TN20P 95
TN30P 86
grade
120
speed — m/min
150
180
210
240
270
300
330
Starting Conditions
360
m/min
TN10P 172
TN20P 176
TN30P 122
Ferritic, Martensitic, and PH Stainless Steels
(340–450 HB) (36–48 HRC)
Material
Group
m/min
TN30P
Ferritic, Martensitic, and PH Stainless Steels
()330 HB) ()35 HRC)
Material
Group
495
TN20P
Alloy Steels and Tool Steels
(340–450 HB) (36–48 HRC)
Material
Group
455
316
Alloy Steels and Tool Steels
()330 HB) ()35 HRC)
Material
Group
410
TN10P
Medium- and High-Carbon Steels
(>0.3% C)
Material
Group
360
Starting Conditions
grade
105
speed — m/min
135
165
195
225
255
285
315
Starting Conditions
345
m/min
TN10P 144
TN20P 135
TN30P 95
B113
Step 3 • Selecting the cutting speed