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MACHINING CONDITIONS- DRILLING- CUTTING SPEED( Vc)
LT 30
P
M
K
S
H
Material Group
Lamina Gr. N °
Non Alloyed 1
Low Alloyed 2
High Alloyed 3
Austenitic 4
Duplex 5
Ferritic & Martensitic
6
Grey 7
Malleable & Nodular
Fe, Ni & Co based
Ti based 10
Steel
8
9
11
Material Examples
C35, Ck45, 1020, 1045, 1060, 28Mn6
42CrMo4, St50, Ck60, 4140, 4340, 100Cr6
X40CrMoV5, H13, M42, D3, S6-5-2, 12Ni19
304, 316, X5CrNi18-9
X2CrNiN23-4, S31500
410, X6Cr17, 17-4PH, 430
GG20, GG40, EN- GJL-250, N030B
GGG40, GGG70, 50005
Incoloy 800 Inconel 700
Hardness V c
[ m / min ] min max
125 HB
270 190 HB 180 230 250 HB 200 180 HB
230
120 230 HB 190
280 HB 170
100 350 HB 150
220 HB 170
70 280 HB 150
320 HB 130
60 350 HB 100
180 HB 170 230 240 HB 120 210 290 HB
120
70 310 HB 120
200 HB 100 150 42 HRc 60 100 150 HB
230 200 HB 150 210 250 HB 170 150 HB
200 200 HB 120 170 250 HB 150 240 HB 250 HB
30 40
Stellite 21 350 HB 20 40 T40- 40 60
TiAl6V4- 30 40
X100CrMo13, 440C, G-X260NiCr42
45 HRc 50 90 50 HRc 40 70 55 HRc 30 60 Chilled Cast Iron Ni-Hard 2 400 HB 40 60 White Cast Iron G-X300CrMo15 55 HRc 30 50
NF Aluminium 12 AlSi12 130 HB 200 400
310