
Oxide
| Low carbon steels | Medium carbon steels | High carbon steels | Alloy steels | Stainless steels | |
| 5低炭素鋼20 | 5中炭素鋼20 | 5高炭素鋼20 | 5合金鋼20 | 5ステンレス鋼15 | |
| (m/min) | (m/min) | ( m/ min) | (m/min) | (m/min) |
Product Features ●TheSU2-SPisaspiralflutetapforhardtocutstainlesssteelthatisoptimumforblindhole BLFShape machiningofstainlesssteelsuchasSUS316andSUS317. ●Itisaspecialdesignoffullthreadsforthefirstfewthreadsandthebalancearehalfthethreadheight. ●Withthisspecialshape,itiseffectiveinthepreventionofflutechippingofthefullthreads.Itreduces tappingtorqueandhasgoodabrasionresistancewhileallowingtomaintainthescrewthreadguide specifications. ●Ithasimprovedchipejectionfromtheuniqueflutedesign. Tapping Data Thread Size [M12×1.75]
| Workpiece Material | SUS316 | SU2-SP |
| Bored Hole Size | φ10.3 | |
| Can Continue | ||
| Tapping Length | 25mm blind hole | |
| Machinery Type | CNC tapping machine | SU-SP |
| Tapping Speed | 8m/min |
0 200 400 600 800
Tapping Fluid Non-water soluble cutting oil (Number of holes processed.)
Characteristics of stainless steel
・Itworkhardenseasily.Chipweldingoccursfrequently. Type of Material Element Content (%)
| Type of Material | Element C | ontent (%) |
| Ni | Cr | |
| SUS303 | 8.00〜10.00 | 17.00〜19.00 |
| SUS304 | 8.00〜10.50 | 18.00〜20.00 |
| SUS316 | 10.00〜14.00 | 16.00〜18.00 |
| SUS317 | 11.00〜15.00 | 18.00〜20.00 |
・Toolfrictiontendstooccur.
In general wear, austenitic stainless steel have the characteristics described above and are regarded as difficult to cut materials. Among Austenitic stainless steel with the Ni content of more than 10% such as SUS 316 is regarded as "difficult-to-cut stainless steel".