The speed of tapping depends on the type of screw tap, the number of teeth of the tapping part, the material, the type of material to be cut, the shape of the bottom hole, the cutting oil, etc. The speed is adjusted under the speed setting, so it must be very careful. Notice.
When the material to be cut is easy to cut, the processing is short, and the cutting oil can be sufficiently increased, the tapping speed can be set faster. If the material to be cut is difficult to cut or its characteristics are not clear, it is recommended to start tapping from a tapping speed close to the lower limit.
※ The table below is based on the recommended speed when using water-insoluble cutting oil. If water-soluble cutting oil is used, Please slow down by 30%
| Material to be cut | cutting speed Unit:m/min | ||||
| Spiral tapping | Tip thread tapping | Extrusion tap | Straight groove tapping | Super hard wire tap | |
| Low-carbon steel | 8~15 | 10~20 | 8~15 | 6~10 | —— |
| Carbon steel | 6~12 | 8~14 | 7~12 | 5~9 | —— |
| High-carbon steel | 5~10 | 8~12 | 5~10 | 5~8 | —— |
| alloy steel | 5~10 | 7~10 | 5~10 | 5~8 | —— |
| Quenched and tempered materials | 3~5 | 4~7 | —— | 3~6 | —— |
| Stainless steel | 3~8 | 4~9 | 6~15 | 3~7 | —— |
| tool steel | 5~8 | 6~10 | —— | 5~9 | —— |
| cast steel | 6~10 | 8~13 | —— | 6~10 | —— |
| cast iron | —— | —— | —— | 12~17 | 15~25 |
| Ductile Iron | 5~10 | 5~10 | —— | 5~8 | 12~20 |
| copper | 8~12 | 8~13 | 25~35 | 7~11 | 15~33 |
| Brass·Brass cast iron | 11~22 | 13~25 | 25~35 | 10~20 | 23~33 |
| Phosphor Bronze·Phosphor Bronze Castings | 8~15 | 10~18 | 25~35 | 8~15 | 18~33 |
| Aluminum rolled products | 15~25 | 20~25 | 25~35 | 15~20 | 23~40 |
| Aluminum alloy castings | 11~22 | 12~24 | 15~25 | 10~20 | 15~25 |
| Magnesium alloy castings | 7~15 | 10~20 | —— | 7~15 | 12~20 |
| Zinc alloy castings | 7~15 | 10~20 | 15~25 | 7~15 | 12~20 |
| thermosetting resin | 11~17 | 12~18 | —— | 10~15 | 15~25 |
| thermoplastic resin | 11~17 | 12~18 | —— | 10~15 | 15~25 |
| Titanium alloy | 6~9 | 6~9 | —— | —— | —— |
| Nickel alloy | 3~6 | 3~6 | —— | —— | —— |
