
Tapping speed Gr. Materials Features
| ISO | ISO | P1 | Free cutting steel and structural steel | Rm < 500 N/mm² |
| Identifi- | Identifi- | P2 | Carbon steel and low alloy steel | Rm 500-700 N/mm² |
cation cation
Materials Area of full rigid lead feed Materials
| numbers numbers P3 | Medium alloy steel and heat treated steel | Rm 600-800 N/mm² |
| P4 | High alloy steel | Rm 800-1000 N/mm² |
| P5 | Tool steel | Rm 900-1200 N/mm² |
| P6 | High tensile strength steel | Rm 1200-1600 N/mm² |
| >>> M1 | Ferritic stainless steel | Rm 400-700 N/mm² |
| M2 | Austenitic stainless steel (good machinability) | Rm 500-750 N/mm² |
| M3 | Austenitic stainless steel (medium machinability) | Rm 550-850 N/mm² |
| M4 | Martensitic stainless steel | Rm 650-950 N/mm² |
| M5 | PH stainless steel | Rm 800-1250 N/mm² |
| K1 | Grey cast iron | HB 150-250 |
| K2 | Nodular cast iron | HB 150-350 |
| K3 | Austenitic cast iron | HB 120-260 |
>>>
K4 ADI cast iron HB 250-500
N1 Aluminium alloys < 12% Si N2 Aluminium alloys > 12% Si N3 Copper alloys N4 Brass alloys and bronze alloys
n ima e tellin ossible a lications N5 Plastic materials
N6 Fiber and composites
| S1 | Heat resistant super alloys (HRSA) (good machinability) | HRC < 25 |
| S2 | Heat resistant super alloys (HRSA) (medium machinability) | HRC 25-35 |
| S3 | Heat resistant super alloys (HRSA) (low machinability) | HRC 35-45 |
S4 Low alloy Titanium (good machinability) S5 High alloy Titanium (medium machinability)
| H1 | Hardened general steel | HRC 50-56 |
| H2 | Hardened bearing steel | HRC 54-62 |
| H3 | Hardened tool steel | HRC 60-65 |
| H4 | Hardened martensitic stainless steel | HRC 50-56 |
| H5 | Hardened white cast iron | HRC 48-55 |