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Twist drill with Morse taper shank suitable for a variety of materials and industrial applications. The tang at the end of the shank is used for ejecting the drill from the socket or sleeve. The drive and alignment is derived from the taper lock.
| ISO | VDI | Description | Condition | Hardness | Strength | Optimal |
|---|---|---|---|---|---|---|
| P | 1 | Steel - Non-alloy, cast & free cutting (~ 0.15 %C) | Annealed | 125MPa | 440MPa | |
| P | 2 | Steel - Non-alloy, cast & free cutting (~ 0.45 %C) | Annealed | 190MPa | 640MPa | |
| P | 3 | Steel - Non-alloy, cast & free cutting (~ 0.45 %C) | Quenched & Tempered | 250MPa | 840MPa | |
| P | 4 | Steel - Non-alloy, cast & free cutting (~ 0.75 %C) | Annealed | 270MPa | 910MPa | |
| P | 5 | Steel - Non-alloy, cast & free cutting (~ 0.75 %C) | Quenched & Tempered | 300MPa | 1010MPa | |
| P | 6 | Steel - Low alloy & cast < 5% of alloying elements | Annealed | 180MPa | 610MPa | |
| P | 7 | Steel - Low alloy & cast < 5% of alloying elements | Quenched & Tempered | 275MPa | 930MPa | |
| P | 8 | Steel - Low alloy & cast < 5% of alloying elements | Quenched & Tempered | 300MPa | 1010MPa | |
| P | 9 | Steel - Low alloy & cast < 5% of alloying elements | Quenched & Tempered | 350HB | 1180MPa | |
| P | 10 | Steel - High alloy, cast & tool | Annealed | 200MPa | 680MPa | |
| P | 11 | Steel - High alloy, cast & tool | Hardened & Tempered | 325HB | 1100MPa | |
| P | 12 | Steel - Corrosion resistant & cast - Ferritic / Martensitic | Annealed | 200HB | 680MPa | |
| P | 13 | Steel - Corrosion resistant & cast - Martensitic | Quenched & Tempered | 240HB | 810MPa | |
| M | 14.1 | Stainless Steel - Austenitic | Age Hardened | 180MPa | 610MPa | |
| M | 14.2 | Stainless Steel - Duplex | 250HB | 840MPa | ||
| M | 14.3 | Stainless Steel - Precipitation Hardening | 250HB | 840MPa | ||
| K | 15 | Cast Iron, Grey (GG) - Ferritic / Pearlitic | 180MPa | 610MPa | ||
| K | 16 | Cast Iron, Grey (GG) - Pearlitic | 260MPa | 880MPa | ||
| K | 17 | Cast Iron, Nodular (GGG) - Ferritic | 160MPa | 570MPa | ||
| K | 18 | Cast Iron, Nodular (GGG) - Pearlitic | 250MPa | 840MPa | ||
| K | 19 | Cast Iron, Malleable - Ferritic | 130MPa | 460MPa | ||
| K | 20 | Cast Iron, Malleable - Pearlitic | 230MPa | 780MPa | ||
| N | 21 | Aluminum & Magnesium, wrought alloy - Non Heat Treatable | 60HB | 210MPa | ||
| N | 22 | Aluminum & Magnesium, wrought alloy - Heat Treatable | Age Hardened | 100HB | 360MPa | |
| N | 23 | Aluminum & Magnesium, cast alloy ≤12% Si - Non Heat Treatabl | 75HB | 270MPa | ||
| N | 24 | Aluminum & Magnesium, cast alloy ≤12% Si - Heat Treatable | Age Hardened | 90HB | 320MPa | |
| N | 25 | Aluminum & Magnesium, cast alloy >12% Si - Non Heat Treatabl | 130HB | 460MPa | ||
| N | 26 | Copper & Copper alloys (Brass/Bronze) - Free cutting, Pb > 1 | 110HB | 390MPa | ||
| N | 27 | Copper & Copper alloys (Brass/Bronze) - Brass (CuZn, CuSnZn) | 90HB | 320MPa | ||
| N | 28 | Copper & Copper alloys (Brass/Bronze) - Bronze (CuSn) | 100HB | 360MPa | ||
| N | 29 | Non-metallic - Thermosetting & fiber-reinforced plastics | ||||
| N | 30 | Non-metallic - Hard rubber, wood etc. | ||||
| S | 31 | High temperature alloys - Fe based | Annealed | 200HB | 680MPa | |
| S | 32 | High temperature alloys - Fe based | Age Hardened | 280HB | 950MPa | |
| S | 33 | High temperature alloys - Ni / Co based | Annealed | 250HB | 840MPa | |
| S | 34 | High temperature alloys - Ni / Co based | Age Hardened | 350HB | 1180MPa | |
| S | 35 | High temperature alloys - Ni / Co based | Cast | 320HB | 1080MPa | |
| S | 36 | Titanium & Titanium alloys - CP Titanium | 400MPa | |||
| S | 37.1 | Titanium & Titanium alloys - Alpha alloys | 860MPa | |||
| S | 37.2 | Titanium & Titanium alloys - Alpha / Beta alloys | Annealed | 960MPa | ||
| S | 37.3 | Titanium & Titanium alloys - Alpha / Beta alloys | Age Hardened | 1170MPa | ||
| S | 37.4 | Titanium & Titanium alloys - Beta alloys | Annealed | 830MPa | ||
| S | 37.5 | Titanium & Titanium alloys - Beta alloys | Age Hardened | 1400MPa | ||
| H | 38.1 | Hardened steel | Hardened & Tempered | 45HRC | ||
| H | 38.2 | Hardened steel | Hardened & Tempered | 55HRC | ||
| H | 39.1 | Hardened steel | Hardened & Tempered | 58HRC | ||
| H | 39.2 | Hardened steel | Hardened & Tempered | 62HRC | ||
| H | 40 | Cast Iron - Chilled | Cast | 400MPa | 1350MPa | |
| H | 41 | Cast Iron | Hardened & Tempered | 55HRC |
