White ring (VAP)
VÖLKEL White ring HSSE VAP taps
Whether for mechanical engineering, medical technology or the food industry, the white ring machine taps are the specialists in all applications where precise and reliable thread cutting in stainless steels (INOX materials) is required. VÖLKEL white ring thread taps are available for metric threads up to M 42 as well as for metric fine threads, UNC, UNF and G (BSP) pipe threads.
- Machining steels, case-hardening steels, tempered steels
- Stainless and acid-resistant steels (INOX) with < 850 N/mm² tensile strength
- High-alloy stainless and acid-resistant chromium-nickel steels
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VÖLKEL HSSE VAP White ring taps
In addition to the high-quality HSSE base material, the white ring taps are also steam tempered. This involves heat treatment of the finished tool, which creates a layer of iron oxide on the surface of the tap.
Advantages: The iron oxide layer improves the adhesion of coolants and lubricants to the tap, reduces friction and ensures a continuous lubricating film. This prevents cold welding, improves the performance of the taps and extends their service life.
Taps for stainless steel
With the steam tempered HSSE tap, you can cut threads in INOX materials with a tensile strength of up to 850 N/mm². It is also possible to machine high-alloy chromium-nickel steels and titanium alloys. When cutting threads, it is essential to use a lubricant suitable for stainless steel, such as VÖLKEL cutting oil N3S.
The materials table contains some examples of application with material numbers and tensile strength which are suitable to cut with the VÖLKEL HSSE VAP white ring machine taps.
| Material number | DIN | AISI | AFNOR | JIS | Tensile strength min./max. |
|---|---|---|---|---|---|
| 1.4021 | X20Cr 13 | 420 | Z 20 C 13 | SUS 420 J 1 | 650 - 950 N/mm² |
| 1.4028 | X30Cr 13 | 420 | Z 30 C 13 | SUS 420 J 2 | 600 - 780 N/mm² |
| 1.4031 | X39Cr 13 | 420 | Z 40 C 14 | SUS 420 J 2 | 560 - 800 N/mm² |
| 1.4104 | X14CrMoS 17 | 430 F | Z 13 CF 17 | SUS 430 F | 540 - 840 N/mm² |
| 1.4301 | X5CrNi18 10 | 304 (V2A) | Z 6 CN 18.09 | SUS 304 | 500 - 700 N/mm² |
| 1.4305 | X8CrNiS 18 9 | 303 | Z 10 CNF 18.09 | SUS 303 | 500 - 750 N/mm² |
| 1.4306 | X2CrNi 19 11 | 304L (V2A) | Z 2 CN 18.10 | SCS 19 | 460 - 850 N/mm² |
| 1.4310 | X10CrNi 18 8 | 301 | Z 11 CN 17-08 | SUS 301 | 700 - 950 N/mm² |
| 1.4311 | X2CrNiN 18 10 | 304 LN | Z c2 CN 18.10 | SUS 304 LN | 550 - 760 N/mm² |
| 1.4541 | X10CrNiTi 18 9 | 321 (V2A) | Z 6 CNT 18.10 | SUS 321 | 500 - 700 N/mm² |
| 1.4401 | X5CrNiMo 17 12 1 | 316 (V4A) | Z 6 CND 17.11 | SUS 316 | 510 - 710 N/mm² |
| 1.4404 | X2CrNiMo 17 12 2 | 316L (V4A) | Z 2 CND 17.12 | SUS 316 L | 490 - 850 N/mm² |
| 1.4406 | X2CrNiMoN 17 12 2 | 316 LN | Z 2 CND 17.12 AZ | SUS 316 LN | 580 - 800 N/mm² |
| 1.4429 | X2CrNiMoN 17 13 3 | 316 LN | Z 2 CND 17.13 AZ | SUS 316 LN | 580 - 800 N/mm² |
| 1.4435 | X2CrNiMo 18 14 3 | 316 L | Z 2 CND 17.13 | SCS 16 ; SUS 316 L | 490 - 690 N/mm² |
| 1.4436 | X5CrNiM0 17 13 3 | 316 | Z 2 CND 17.12 | SUS 316 | 510 - 710 N/mm² |
| 1.4438 | X2CrNiMo 18 16 | 317 L | Z 2 CND 19.15 | SUS 317 L | 490 - 690 N/mm² |
| 1.4460 | X4CrNiMoN 27 5 2 | 329 | Z 5 CDN 27-05 | SUS 329 J 1 | 600 - 800 N/mm² |
| 1.4462 | X2CrNiMoN 22 5 3 | 2205 | Z 3 CND 22-05 Az | SUS 329J3L | 680 - 880 N/mm² |
| 1.4510 | X6CrTi 17 | XM 8 ; 430 TI | Z 8 CT 17 | SUS 430 LX | 450 - 600 N/mm² |
| 1.4521 | X2CrMoTi 18 2 | 444 | Z 3 CDT 18-02 | SUS 444 | 450 - 650 N/mm² |
| 1.4546 | X5CrNiNb 18 10 | 348 | Z 6 CNNb 18.10 | SUS 347 | 410 - 610 N/mm² |
| 1.4550 | X6CrNiNb 18 10 | 347 | Z 6 CN Nb 18.10 | SUS 347 | 550 - 750 N/mm² |
| 1.4552 | GX5CrNiNb 19 10 | Z 4 CN Nb 19.10 M | 440 - 640 N/mm² | ||
| 3.7115 | TiAl 5 Sn 2 | 790 - 980 N/mm² |
Material number: The material number is a standardised, unique identifier for technical materials for a reliable identification. The material number consists of a main group number, separated by a dot from the four-digit grade number. The main group indicates the main material group (e.g. a 1 for steels). The subsequent grade number designates the exact material grade within the main group and also includes properties such as alloy type (chemical composition of the material).
Example (simply explained): 1.4404 (main group 1 = steel / grade number 4404 = corrosion-resistant austenitic stainless steel = also known under the designations AISI 316L (V4A) or X2CrNiMo17-12-2. This stainless steel is characterised by a high molybdenum content (approx. 2% to 2.5%), which gives it significantly improved corrosion resistance against acids and chloride-containing media. Thanks to its low carbon content, it is also resistant to intergranular corrosion, easy to weld and versatile in use. X2CrNiMo17-12-2 stainless steel has excellent resistance to reducing acids, halogen-containing agents and pitting corrosion, particularly due to the addition of molybdenum.
DIN: Deutsches Institut für Normung, AISI: American Iron and Steel Institute, AFNOR: Association Française de Normalisation, JIS: Japanese Industrial Standards