ΟγΈΫΑωΊΟ²ΚΏͺ½± 4779:2021
2021-08
ΟγΈΫΑωΊΟ²ΚΏͺ½± 4779:2021
Abstract
This document specifies the requirements for forged eye hooks with point and latch of grade 4 from stainless steel and solution annealed for use preferably as a component in chain slings of welded construction of grade 4 from stainless steel and solution annealed.
IMPORTANTΒ β For other applications, e.g. steel wire rope slings or textile slings, it is important that the hook design is checked to ensure its fitness for a safe use.
NOTEΒ 1Β Β Β The grade for the hook according to this document is taken from the grade of the sling chain according to ΟγΈΫΑωΊΟ²ΚΏͺ½±Β 1835. Both (sling chains and hooks) have identical scopes and values for the working load limit, WLL, according to TableΒ 2 and values for the mechanical requirements according to TableΒ 3. Thus, the direct correlation of hooks to the sling chain is given by the WLL and especially the code system on the product body itself. The grade of the hook does not define any values of the tensile strength of the hook material. For further information, see AnnexΒ B.
The range of the nominal diameter, dn, of the associated sling chain according to ΟγΈΫΑωΊΟ²ΚΏͺ½±Β 1835 is from 4Β mm to 22Β mm.
Hooks according to this document are for use in the temperature range β100Β Β°C to +400Β Β°C.
These hooks are solution annealed in the finished condition and can therefore be used without restrictions with regard to the corrosion resistance of the steels according toΒ 5.1.
NOTEΒ 2Β Β Β The term βeye hook with point and latchβ is taken from ΟγΈΫΑωΊΟ²ΚΏͺ½±Β 1837:2003, FigureΒ 5.
General information
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Status: PublishedPublication date: 2021-08Stage: International Standard published [60.60]
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Edition: 2Number of pages: 15
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Technical Committee :ΟγΈΫΑωΊΟ²ΚΏͺ½±/TC 111/SC 3ICS :53.020.30
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