ISO 4779:2021
起重用链条部件.带尖端和插销的锻造吊环.固溶退火的4级不锈钢
Chain components for lifting purposes — Forged eye hook with point and latch — Grade 4, stainless steel, solution annealed
- 标准号
- ISO 4779:2021
- 发布
- 2021年
- 发布单位
- 国际标准化组织
- 当前最新
- ISO 4779:2021
- 引用标准
- EN 10228-2 ISO 13385-1 ISO 16143-2 ISO 1835 ISO 1837 ISO 3452-1 ISO 7500-1 ISO 8539
- 适用范围
- 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. IMPORTANT — 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. NOTE 1 The grade for the hook according to this document is taken from the grade of the sling chain according according to Table 2 and values for the mechanical requirements according to Table 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 Annex B. The range of the nominal diameter, dn, of the associated sling chain according to ISO 1835 is from 4 mm to 22 mm. Hooks according to this document are for use in the temperature range –100 °C to +400 °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 to 5.1. NOTE 2 The term “eye hook with point and latch” is taken from ISO 1837:2003, Figure 5.