EN 818-2:1996+A1:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Hazards
5 Safety requirements
  5.1 General
  5.2 Dimensions
      5.2.1 Nominal size of chain, d[n]
      5.2.2 Tolerance on material diameter (except at the weld)
      5.2.3 Weld diameter
      5.2.4 Length dimensionally affected by welding
      5.2.5 Pitch and widths
  5.3 Materials and heat treatment
      5.3.1 Quality of material
      5.3.2 Heat treatment
  5.4 Mechanical properties
      5.4.1 Manufacturing proof force (MPF)
      5.4.2 Breaking force (BF) and total ultimate elongation (A)
      5.4.3 Bend deflection
6 Verification of safety requirements
  6.1 Qualification of personnel
  6.2 Size of lot and selection of samples
  6.3 Manufacturing proof force, breaking force and total
      ultimate elongation
      6.3.1 Static tensile test
      6.3.2 Manufacturing proof force acceptance criteria
      6.3.3 Breaking force and total ultimate elongation
            acceptance criteria
  6.4 Bend deflection
      6.4.1 Bend test
      6.4.2 Bend deflection acceptance criteria
7 Marking
8 Manufacturer's certificate
9 Information for use
Annex A (informative) Calculation of dimensions, working load
        limits and mechanical properties
      A.1 Dimensions and tolerances
      A.2 Working load limits and mechanical properties
Annex B (informative) Weight of chain
Annex C (informative) Designation system for chain (medium
        tolerance) - grade 8
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 98/37/EC
Annex ZB (informative) Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 2006/42/EC
Bibliography

This part of EN 818 specifies the requirements related to safety for short link chains, grade 8, of medium tolerance for use in chain slings according to EN 818-4 and for general lifting purposes. They are electrically welded round steel short link chains, heat treated and tested and complying with the general conditions of acceptance in EN 818-1.The range of nominal sizes of chain covered by this Part of EN 818 is from 4 mm to 45 mm.The hazards covered by this Part of EN 818 are identified in clause 4.The bases for calculation of tabulated values for dimensions, working load limits and mechanical properties are given in annex A.Annex B gives information on weight/metre of chain.Annex C gives an example of a designation system for chains.