New System table of taps for steels, blind hole use(low and middle speed range)

slow Tapping speed fast

5m/min10m/min15m/min20m/min30m/min
WorkpieceWorkpiece
MaterialsArea of full rigid lead feedMaterials
UH-CT
60HRC⑤-2760HRC
55HRC55HRC
EH-CT
45HRC>>> ⑤-2345HRC
45HRCEH-HT45HRC
>>> ④-119
35HRC35HRC
HC+SP
SKS>>> ①-129SKS
Tool steelsSKDHC-SPTool steels SKD
>>> ①-129
SCMSCM
Alloy steelsSCrAlloy steels SCr

SP +SP >>> ①-35 >>> ①-55 S45C S45C

HT

>>> ④-3

S45C S45C S30C S30C

IHT E-SP

>>> ④-49 >>> ①-127

ISP

>>> ①-59 S25C S25C SS400 SS400

FCDFC-HTN-CT FCFCD
Ductile cast irons>>> ④-91>>> ⑤-10Ductile cast irons
FCFC
Cast ironsCast irons

5m/min 10m/min 15m/min 20m/min 30m/min