
| ・Product�Name�� | ��and�Size. |
| HC+SP | 〜M6 |
| HC−SP | M8〜,all W |
Medium carbon steels High carbon steels
(m/min) (m/min) Product Features ●TheHC+SP/HC-SPisaspiralflutetapforhighcarbonsteelsuchasS55Candissuitablefortappingofmediumandhigh hardnessmaterialsupto30HRC. Tapping conditions The HC+SP/HC-SP is best suited for tapping of high carbon steel, alloy tool steel and refined steel.
| Workpiece Material | Cutting Speed(m/min) |
| S45C〜 High Carbon Steel | 10〜20 |
| SKC、SKD Alloy Tool Steel | 5〜10 |
| Thermal Refining Steel 25〜35HRC | 5〜10 |
Product chart (tensile strength)
HC + SP / HC - SP application range (tensile strength)
E-SP
SP
500 600 700
800
Reference EH-HT EH-PO
Unit:MPa * 900 1000
*1MPa=1N/mm2 ≒1Kgf/mm2÷9.8