The monolayer Titanium Nitride coating, S coating, TiN coating, is standard for HSS and carbide cutting tools. Used for drilling, tapping and milling operations. Nevertheless, most application is steel machining.
S Coating is well proven, cost efficient all-round coating. Generally achieving performance increases. Surpassed in certain cases only by A-, C- and F-coatings.
| Colour | Gold |
| Coating process | Physical Vapour Deposition |
| Layer structure | Monolayer |
| Thickness [µm] | 1.5 - 3.0 |
| Hardness [HV 5g] | 2300 |
| Friction coefficient | 0.5 |
| Deposition temp. [°C] | 400 - 500 °C |
| Maximum operating temperature [°C] | 600 °C |
| applications | General |
| Workpiece materials | General |

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Twist drills: un-alloyed and alloyed steels
Threading tools: un-alloyed, alloyed and stainless steels, Al cast alloys
Reamers: un-alloyed steels