soft hard

TappingRatio of threaded holes produced in steel world wide based on material typeTapping
methodspeed
St44-2St44-2C30C45C45Alloy steels
Medium carbonigh carbon

Low carbon steels steels steels 25CrMo4

C30C30C4542Cr4
igh
2020
m/minm/min
series

15 AUXSP AUXSL 15

m/min m/min >>> 67P >>> 108P series AU+SP AU+SL

10m/min 10m/min 65P 106P

t n r series

SPPOHT
>>> 52P>>> 114P>>> 134P

5m/min 5m/min

ISO Identification numbers

Materials

igh tensile strength steel

Tool steel

Tapping speed ISO Identification

Area of full rigid lead feed Materials numbers

igh tensile strength steel

Tool steel