Stainless steels
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Stainless Steels Complete solutions from one source • • • • • drilling from ø 0.8 mm and up to 80xD drilling depth HPC reaming with highest accuracy HPC milling with perfect surface finish threading tools for every application custom made modular tools

Guhring solutions for the machining of stainless steels Stainless steels and their attributes Stainless or acid-resistant steels have a very high chromium content > 12 %, an excellent resistance against chemically aggressive substances and corrosion. The chromium creates a micro oxygen diffusing chromium dioxide coating on the surface, that prevents in-depth corrosion. Most stainless steels are from the austenitic group of steels. Next to chromium, nickel is the most important constituent of the structure, often molybdenum is also added to optimise the mechanical characterisics. The range...

Guhring solutions for the machining of stainless steels Properties and attributes when machining When machining stainless or acid-resistant steels, the following properties should be noted: These materials tend to work harden, are very poor conductors of heat and display a high toughness and shear elongation. The high toughness leads to a very heavy cutting load especially when drilling and when producing threads. In addition, the mechanical properties of stainless or acid-resistant steels produce unfavourable chips that tend to stick and jam. Optimal machining and tool selection Stainless...

Drilling tools for stainless steels Ratio drills RT 100 VA and RT 100 T Constant high performance and accuracy in stainless steels is provided by Guhring‘s Ratio drills RT 100 VA in the diameter range from 3.0 to 20.0 mm for the drilling depths 3xD and 5xD as well as Guhring‘s Ratio drills RT 100 T in the diameter range from 3.0 to 14.0 mm for the drilling depths 15xD, 20xD, 25xD, 30xD and 40xD. The geometries, tool materials and coatings of these two Ratio drills is especially adapted for the machining of stainless steels enabling the highest cutting parameters, perfect surface quality and...

Drilling tools for stainless steels Shank form Tool description and application Drilling depth Tool material Surface finish Diameter range RT 100 VA - Ratio drills with coolant ducts DIN RT 100 6537 K VA solid carbide TiAlN nanoA solid carbide TiAlN nanoA solid carbide TiAlN nanoA solid carbide TiAlN nanoA RT 100 T - Ratio drills with coolant ducts Guhring RT 100 standard T solid carbide solid carbide solid carbide solid carbide solid carbide

Drilling tools for stainless steels Solid carbide micro-precision drills For especially small holes in stainless steels Guhring offers solid carbide micro-precision drills with diameters between 0.8 and 3.0 mm. They are available without internal cooling for the drilling depths 4xD and 7xD as well as with internal cooling for the drilling depths 8xD and 15xD. Selected solid carbide micro-precision drill machining results Guhring no. TiAlN SuperA TiAlN SuperA TiAlN SuperA Material group stainless steel stainless steel stainless steel Material description blind hole blind hole blind hole...

Drilling tools for stainless steels Shank form Tool description and application Drilling depth Tool material Surface finish Diameter range Solid carbide micro-precision drills without coolant ducts Guhring standard solid carbide Guhring standard solid carbide Solid carbide micro-precision drills with coolant ducts Guhring standard solid carbide Guhring standard solid carbide GU 500 twist drills with reinforced shank

Drilling tools for stainless steels EB 80 and EB 100 single-flute gun drills Guhring provides single-flute gun drills type EB 80 and EB 100 ex-stock especially for close tolerances or for primarily deep holes and especially for the machining of high-alloyed and stainless steels. Thanks to their special carbide grade, geometry and coating they achieve long tool life in stainless steels as the machining results listed below demonstrate. Selected machining results EB 80 Guhring no. Diameter Coating Material group Material description Drilling depth [mm] Hole type Cooling Lubricant Machine type...

Drilling tools for stainless steels Flute length (mm)/ Drilling depth Tool material Surface finish Solid carbide Solid carbide Solid carbide Solid carbide Solid carbide TiAlN SuperA Solid carbide TiAlN SuperA Solid carbide TiAlN SuperA Solid carbide TiAlN SuperA Tool description and application Diameter range Gun drills EB80 with coolant ducts Gun drills EB100 with coolant ducts

Reaming tools for stainless steels HR 500 high-performance reamers and solid carbide NC-reamers High-performance and extreme accuracy are the features of Guhring‘s HR 500 reamers and solid carbide NC-reamers. HR 500 high-performance reamers excel as solid carbide tools in the diameter range up to 20.00 mm with highest performance levels. They are also available as carbide-tipped tools in the diameter range from 22.0 to 40.0 mm, so the tool material is optimally adapted to the machining task. Guhring‘s NC-reamers are designed to satisfy the high quality demands in the production arena and...

Reaming tools for stainless steels Tool material Surface finish Guhring HR 500 straight standard S h6 solid carbide Guhring HR 500 straight standard S h6 solid carbide Guhring HR 500 straight standard D h6 solid carbide Guhring HR 500 straight standard D h6 solid carbide Shank form Tool description and application Diameter range HR 500 GS for blind holes Guhring HR 500 straight standard GS h6 HR 500 GD for through holes Guhring HR 500 straight standard GD h6 Solid carbide NC-reamers with extremely unequal spacing Guhring standard solid carbide Guhring standard solid carbide

Milling tools for stainless steels Ratio end mills RF 100 VA RF 100 high-performance end mills excel with different spiral angles, resulting in a vibration-free cut. With the unequal helix, a considerably better surface quality is achieved on finishing operations and clearly higher feed rates can be achieved with slot drilling and rough milling. With many applications the complete milling process can be covered with a RF 100, generating a considerable cost advantage in addition to an increase in tool life and dimensional accuracy of the workpiece. In combination with the newly developed...