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SPMT 12T308
Material Group
Low Carbon Steel 1
Nickel Based Alloys
Titanium Based
Alloys
*For all material types and standards, see pages 240 to 245.
Cutting Conditions
Group Brinell d.o.c [mm] feed [mm/tooth] Vc [m/min]
Material Examples*
No hardness min max min max min max
Ck 15
9SMnPb28
42 CrMo 4
Alloy Steel 2 100 Cr 6
32 NiCrMo 14.5
X38 CrMoV 5
High Alloy Steel 3 X210 CrW 12
4
X90 CrMoV 8
303 / 304 210
304 L to 250
Austenitic
230
5 316 / 316 L
Stainless Steel to 270
Ferritic Stainless
Steel
6
316 Ti
630 (F16PH)
150 7.0
0.38
300
180 0.5 7.0 0.18 0.38 190 260
210 7.0
0.38
220
180 7.0
0.35
0.5
0.15
230
7.0
0.35
®
150
200
180
280
320
0.5
7.0
7.0
0.15
0.32
0.32
130
160
140
220
280
0.5
7.0
7.0
0.12
0.32
0.32
90
130
110
320 7.0
0.28
95
0.5
0.12
60
350 7.0
0.28
80
0.5 7.0
0.18 0.30 170 250
0.15 0.30 160 210
-------- 0.5 7.0 0.12 0.28 70 150
7 430 / 439 / 444 Annealed 0.5 7.0 0.18 0.35 150 210
Martensitic
Annealed 0.5 7.0 0.15 0.30 150 230
8 410 / 420
Stainless Steel Treated 0.5 7.0 0.15 0.30 90 170
EN - GJL 200
240
140
Grey Cast Iron 9 EN - GJL 250
0.5 7.0 0.15 0.38 170 220
to 230
EN - GJL 300 190
EN - GJS 400 210
200
Nodular Cast Iron 10 EN - GJS 600 260 0.5 7.0 0.12 0.30 120 160
200
EN - GJS 800 310 130
Inconel 625 25 35
11 Inconel 718 -------- 0.5 5.0 0.15 0.28 28 40
12
0.5 7.0
Hastelloy C 40 60
TiAl 6 V4
T40
-------- 0.5 5.0 0.18
0.32
0.28
35
28
60
40
SPUN Shape
Milling
Application Guide
Swiss
Made
S
Clearance Angle
P
Tolerance
U
Insert Type
N
Square 90°
11°
l ± 0.13 m ± 0.2
s ± 0.13
Clamping
no chip breaker
Insert Designation Grade l s r Direction Catalog Nr. Page*
SPUN 20308 LT 30 12 3,18 0,8 Neutral M0000050 203
Surfacing
Chamfering
90°
* For Cutting data see
relevant page
Machining Recommendations Guide - please see page 6
20
SPUN