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Thread Turning Technical Section
Recommended cutting speed (m/min) for thread turning inserts Condition Material ISO Standard P30 K20 BXC MXC BMA P25C BLU HBA
<0.25%C ≥0.25%C
Annealed Annealed
Non-Alloy Steel and Cast Steel, Free Cutting Steel
Quenched & Tempered <0.55%C Annealed ≥0.55%C Quenched & Tempered
50-130
70-150 100-180 100-180 120-180 110-210
P
Annealed Quenched & Tempered Annealed Quenched & Tempered Ferritic / Martensitic Martensitic Austenitic
Low Alloy Steel and Cast Steel (less than 5% alloying elements) High Alloy Steel, Cast Steel, and Tool Steel
50-80
60-90 70-120 70-120 80-130 90-140
40-50
50-60 55-70 50-60 60-80 70-90
Stainless Steel and Cast Steel M
50-80 50-80 60-90 60-90 90-130 110-160
Ferritic / Pearlitic Pearlitic Ferritic Pearlitic Ferritic Pearlitic Not Cureable Not Cureable Cured
100-130 120-150
60-90 80-110
Cast Iron Nodular (GGG)
K
120-130 140-150 100-130 110-140
65-85 90-100 60-85 80-100
Grey Cast Iron (GG)
Malleable Cast Iron
100-400 200-400 150-400 200-400
250-500
Aluminum-Wrought Alloy
<=12% Si
Aluminum-Cast, Alloyed
110-300 200-500 150-350 200-500
280-500
Cured High Temperature
>12% Si >1% Pb
N
Free Cutting
90-150 150-250 110-180 150-250
190-350
Brass Electrolytic Copper Duroplastics, Fiber Plastics
Copper Alloys
110-150 100-200 150-210 200-300
Non Metallic
Hard Rubber Annealed Cured Annealed
Fe based
High Temp. Alloys,
25-60 30-65 20-80
Super Alloys S
Ni or Co based
Cured Cast
Alpha +Beta Alloys Cured Hardened 45-50 HRc Hardened 51-55 HRc Hardened 56-62 HRc
35-45 40-50 30-60
35-45
Titanium Alloys
35-45 40-50 30-60
Hardened Steel H
25-35 30-40 20-50
Chilled Cast Iron
Cast
15-25 20-30 20-40 Hardened
Cast Iron
A04-3
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