MACHINING CONDITIONS - THREAD TURNING

LT 10 RECOMMENDED NUMBER OF PASSES

ISO METRIC - EXTERNAL

MaterialLamina °MaterialHardnessVc [m/min]
GroupGr. NExamplesminmax
C35, Ck45,125 HB120200
Non Alloyed11020, 1045,190 HB110180
1060, 28Mn6250 HB100170
Low Alloyed242CrMo4, St50, Ck60,180 HB 230 HB100170
P4140, 4340,280 HB70120
100Cr6350 HB6090
X40CrMoV5,220 HB 280 HB100170
High Alloyed3H13, M42, D3, S6-5-2, 12Ni19320 HB70120
350 HB6090
Austenitic4304, 316,180 HB70140
X5CrNi18-9240 HB80120
M Duplex5X2CrNiN23-4, S31500290 HB 310 HB50110
Ferritic &6410, X6Cr17,200 HB70140
Martensitic17-4PH, 43042 HRc50110
GG20, GG40, EN-150 HB70150
Grey7GJL-250,200 HB100140
KN030B250 HB70120
150 HB70150
Malleable & Nodular8GGG40, GGG70, 50005200 HB100140
250 HB70120
Incoloy 800240 HB4060
Fe, Ni & Co based9Inconel 700250 HB3050
SStellite 21350 HB2040
Ti based10T40-5070
TiAl6V4-4060
SteelX100 CrMo13, 440C,45 HRc 50 HRc50
H11G-X260NiCr4255 HRc30
Chilled Cast IronNi-Hard 2400 HB40
White Cast IronG-X300CrMo1555 HRc
NF Aluminium12AlSi12130 HB100400
No. OF PASSES43.532.52PITCH (MM) 1.751.51.2510.750.5
10.340.340.270.260.240.230.230.200.190.170.11
20.300.310.230.220.230.210.210.180.160.150.09
30.250.240.200.200.190.160.180.140.130.110.08
40.210.200.180.170.170.140.160.120.100.060.06
50.190.190.170.160.150.120.110.100.06
60.180.170.160.140.120.100.060.06UT
70.160.160.150.130.100.08OF C
80.150.150.130.120.060.06PTH
90.150.140.120.10DE
100.140.120.110.06
110.130.100.09
120.120.060.06
130.10
140.06
Total2.482.181.871.561.261.100.950.800.640.490.34
No. OF PASSES43.532.52PITCH (MM 1.75) 1.51.2510.750.5
10.320.320.250.250.230.220.220.190.180.160.10
20.270.290.220.210.210.200.200.160.150.140.09
30.220.230.190.190.180.150.170.130.120.100.07
40.200.190.170.160.160.130.150.110.100.060.06
50.190.180.160.150.140.110.100.100.06
60.180.160.160.130.110.090.060.06UT
70.160.150.140.120.090.08OF C
80.150.140.120.110.060.06PTH
90.140.130.110.09DE
100.140.110.100.06
110.120.090.08
120.100.060.06
130.09
140.06
Total2.342.051.761.471.181.040.900.750.610.460.32