- Hot search：
3506-4-2009 pdf free download
3506-4-2009 pdf free download.Mechanical properties of corrosionresistant stainless steel fasteners Part 4:Tapping screws
Caracteristiques mécaniques des éléments de fixation en acier inoxydable resistant a Ia corrosion — Partie 4. Vis a tOle.
Marking of tapping screws is not mandatory.
When tapping screws manufactured according to the requirements of this part of ISO 3506 are designated and marked, they shall be designated in accordance with the designation system described in 3.1 and marked in accordance with 3.2.2 and 3.2.3. However, the designation system described in 3.1 and the provisions for marking according to 3.2.3 shall be used only if all relevant requirements of this part of ISO 3506 are met.
3.2.2 Manufacturers identification mark
A manufacturer’s identification mark shall be included during the manufacturing process on all tapping screws which are marked with a hardness class symbol, provided this is possible for technical reasons. Manufacturer’s identification marking is also recommended on tapping screws which are not marked with a hardness class symbol.
3.2.3 Tapping screws
When tapping screws are marked, they shall be clearly marked in accordance with 3.1. The marking should include the steel grade and hardness class.
All packages for all types of tapping screws of all sizes shall be marked (e.g. through labelling). The marking shall include the manufacturer’s and/or distributor’s identification and the marking symbol for the steel grade and hardness class according to Figure 1 and the manufacturing lot number, as defined in ISO 16426.
Unless otherwise specified, tapping screws in accordance with this part of ISO 3506 shall be supplied clean and bright. For maximum corrosion resistance, passivation is recommended When passivation is required, it shall be performed in accordance with ISO 16048. Tapping screws that are passivated may additionally be marked with the symbol “P after the symbols for steel grade and hardness class (see footnote c of Figure 1).
For tapping screws manufactured to a specific order, the additional marking should be applied to both the fastener and the label. For tapping screws delivered from stock, the additional marking should be applied to the label.
4 Chemical composition
The chemical compositions of stainless steels suitable for tapping screws in accordance with this part of ISO 3506 are given in Table 2.
NOTE The chemical cornpositons given in Table 2 correspond with the chemical compositions given in ISO 3506-1:2009, Table 1. for the relevant steel grades.
The final choice of the chemical composition within the specified steel grade is at the discretion of the manufacturer, otherwise by prior agreement between the purchaser and the manufacturer.
In applications where risk of intergranular corrosion is present, testing in accordance with ISO 3651-1 or ISO 3651-2 is recommended. In such cases, stabilized stainless steels of grades A3 and A5 or stainless steels of grades A2 and A4 with carbon content not exceeding 0.03 % are recommended.3506-4-2009 pdf free download.
All resources on this website are from the Internet. It is only for personal study and research. No one is allowed to use it for any commercial purpose. If you need, please buy the genuine standard. If there is any infringement of your copyright, please contact the webmaster in time, and I will correct it immediately.
- Maybe you like
- Latest Updates
- ISO 287-2009 pdf free download
- ISO 527-5-2009 pdf free download
- ISO 659-2009 pdf free download
- ISO 660-2009 pdf free download
- ISO 712-2009 pdf free download
- ISO 725-2009 pdf free download
- ISO 730-2009 pdf free download
- ISO 927-2009 pdf free download
- ISO 2041-2009 pdf free download
- ISO 3040-2009 pdf free download
- ISO 3506-2-2009 pdf free download
- ISO 3506-3-2009 pdf free download