ISO 16877:2015
Round steel short link chains for lifting purposes — Fine tolerance hoist chains for hand operated chain hoists — Grade TH
ISO 16877:2014 specifies the requirements for fine-tolerance hoist chains of grade TH for use as load chains in hand operated chain hoists for lifting purposes. They are round steel short link chains, electrically welded, heat treated, and tested; they comply with the general conditions of acceptance of ISO 1834.
NOTE 1 The letter "T" expresses the grade in accordance with ISO 1834.
NOTE 2 The letter "H" expresses that these hoist chains are for hand operated hoists only.
NOTE 3 Resistance butt welding and flash welding are listed in ISO 4063.
The range of nominal sizes covered by this International Standard is from 3 mm to 13 mm. Fine-tolerance hoist chains, according to this International Standard, are for use in the temperature range −10 °C to 200 °C.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General conditions of acceptance
5 Dimensions
5.1 Nominal size, dn
5.2 Diameter tolerance
5.3 Pitch
5.4 Width
5.5 Standard gauge length
5.6 Weld diameter
5.7 Length dimensionally affected by welding
6 Material and manufacture
6.1 Quality of material
6.1.1 General
6.1.2 Type of steel
6.1.3 Deoxidation
6.1.4 Weldability
6.1.5 Chemical composition
6.1.6 Finished condition
6.2 Heat treatment
6.3 Working load limits (WLL)
6.4 Mechanical properties
6.4.1 Manufacturing proof force (MPF)
6.4.2 Breaking force (BF)
6.4.3 Total ultimate elongation, A
6.4.4 Bend deflection, f
6.4.5 Surface hardness
6.4.6 Toughness
7 Verification of safety requirements
7.1 Size of lot and selection of samples
7.2 Manufacturing proof force (MPF) — Acceptance criteria
7.3 Breaking force (BF) and total ultimate elongation — Acceptance criteria
7.4 Bend deflection
7.4.1 Bend test
7.4.2 Bend deflection — Acceptance criteria
7.5 Hardness test — Acceptance criteria
7.6 Toughness of chain test material
7.6.1 Toughness test
7.6.2 Toughness test — Acceptance criteria
8 Marking
8.1 Grade marking
8.2 Manufacturer’s marking
9 Manufacturer’s certificate
10 Information for assembly into the chain hoist and for use
10.1 General
10.2 Assembly of hoist chain into the chain hoist
10.3 Hoist chain use
10.4 Inspection
Annex A (normative) Bases for calculation
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General conditions of acceptance
5 Dimensions
5.1 Nominal size, dn
5.2 Diameter tolerance
5.3 Pitch
5.4 Width
5.5 Standard gauge length
5.6 Weld diameter
5.7 Length dimensionally affected by welding
6 Material and manufacture
6.1 Quality of material
6.1.1 General
6.1.2 Type of steel
6.1.3 Deoxidation
6.1.4 Weldability
6.1.5 Chemical composition
6.1.6 Finished condition
6.2 Heat treatment
6.3 Working load limits (WLL)
6.4 Mechanical properties
6.4.1 Manufacturing proof force (MPF)
6.4.2 Breaking force (BF)
6.4.3 Total ultimate elongation, A
6.4.4 Bend deflection, f
6.4.5 Surface hardness
6.4.6 Toughness
7 Verification of safety requirements
7.1 Size of lot and selection of samples
7.2 Manufacturing proof force (MPF) — Acceptance criteria
7.3 Breaking force (BF) and total ultimate elongation — Acceptance criteria
7.4 Bend deflection
7.4.1 Bend test
7.4.2 Bend deflection — Acceptance criteria
7.5 Hardness test — Acceptance criteria
7.6 Toughness of chain test material
7.6.1 Toughness test
7.6.2 Toughness test — Acceptance criteria
8 Marking
8.1 Grade marking
8.2 Manufacturer’s marking
9 Manufacturer’s certificate
10 Information for assembly into the chain hoist and for use
10.1 General
10.2 Assembly of hoist chain into the chain hoist
10.3 Hoist chain use
10.4 Inspection
Annex A (normative) Bases for calculation
Bibliography