Specifications For Drill Rod
| Alloy Tool Steel Drill Rod CR-V Alloy Silversteel | 115 Cr V3 |
| Properties | Chemical Analysis | ||
|---|---|---|---|
| Cr-V-alloyed tool steel with high strength Maintains blade sharpness Good machinability when spheroidized-annealed Small distortion on oil hardening (possible up to approx. 9mm) | C | 1.15% | |
| Cr | 0.70% | ||
| V | 0.10% | ||
| Si | 0.25% | ||
| Mn | 0.30% | ||
| Examples of Applications | |||
| Twist drills and thread taps, reamers, piercing dies, ejectors, arbors, engraving tools, scrapers, files, etc. Is preferably used with silver steel finish in smallest tolerances | |||
| Delivery Conditions | Annealed tensile strength | ||
| Spheroidized-annealed, drawn, ground and polished | Max 750 N/mm2 (220HB) | ||
| Heat Treatment | |||
| Hot Shaping -> | 1050-850 degrees C | ||
| Soft Annealing Temperature -> | 710-750 degrees C | ||
| Hardening Temperature -> | 810-840 degrees C in oil | ||
| 780-810 degrees C in water | |||
| Hardness in HRC |  |
|---|---|
| Annealing Temperature in degrees Celsius | |
| Nomimal Dimension | Tolerance Zone in mm (external measurements) | ||
|---|---|---|---|
| Over | To | h8 (Steel) | |
| 0 | 1 | 0 | -0.014 |
| 1 | 3 | 0 | -0.014 |
| 3 | 6 | 0 | -0.018 |
| 6 | 10 | 0 | -0.022 |
| 10 | 18 | 0 | -0.027 |
| 18 | 30 | 0 | -0.033 |
| Nomimal Dimension | Tolerance Zone in mm (external measurements) | ||
|---|---|---|---|
| Over | To | h9 (Stainless Steel) | |
| 1 | 3 | 0 | -0.025 |
| 3 | 6 | 0 | -0.030 |
| 6 | 10 | 0 | -0.036 |
| 10 | 18 | 0 | -0.043 |
| 18 | 30 | 0 | -0.052 |
| DIN 175-h8 Steel | DIN 671-h9 Stainless Steel |
*All information is strictly informative