BS ISO 16877:2015 INTERNATIONAL ISO STANDARD 16877 Second edition 2015-01-15 Round steel short link chains for lifting purposes Fine tolerance hoist chains for hand operated chain hoists Grade TH Chaines de levage en acier de section ronde a maillons courts - Chaines de levage de tolerance fine pour palans manuels - Classe de qualite TH Reference number ISO 16877:2015(E) ISO @IS02015 BS ISO 16877:2015 IS0 16877:2015(E) Contents Page Foreword ..V 1 Scope .1 2 Normative references 3 Terms and definitions 4 General conditions of acceptance 5 Dimensions. ..2 5.1 Nominal size, dn -2 5.2 Diameter tolerance. ..4 5.3 Pitch. .4 5.4 Width ..4 5.5 Standard gauge length .4 5.6 Weld diameter. ..4 5.7 Length dimensionally affected by welding ..5 6 Material and manufacture. .5 6.1 Quality of material. 6.1.1 General .5 6.1.2 Type of steel .5 6.1.3 Deoxidation .5 6.1.4 Weldability. 5 6.1.5 Chemical composition .5 6.1.6 Finished condition.... .5 6.2 Heat treatment .6 6.3 Working load limits (WLL) 6 6.4 Mechanical properties. ..6 6.4.1 Manufacturing proof force (MPF) .6 6.4.2 Breaking force (BF) .7 6.4.3 Total ultimate elongation, A .7 6.4.4 Bend deflection, f .7 6.4.5 Surface hardness .7 6.4.6 Toughness. .7 7 Verification of safety requirements .11 7.1 Size of lot and selection of samples. .11 7.2 Manufacturing proof force (MPF) - Acceptance criteria. .11 7.3 Breaking force (BF) and total ultimate elongation Acceptance criteria ..1 7.4 Bend deflection. .11 7.4.1 Bend test. 11 7.4.2 Bend deflection - Acceptance criteria ..12 7.5 Hardness test - Acceptance criteria. ..12 7.6 Toughness of chain test material. ..13 7.6.1 Toughness test .13 7.6.2 Toughness test - Acceptance criteria ..13 8 Marking ..13 8.1 Grade marking .13 8.2 Manufacturer's marking ..13 9 Manufacturer's certificate ..13 10 Information for assembly into the chain hoist and for use ..13 10.1 General .13 10.2 Assembly of hoist chain into the chain hoist ..13 10.3 Hoist chain use. ..14 10.4 Inspection. ..14 @ IS0 2015 - All rights reserved ii BS ISO 16877:2015 IS0 16877:2015(E) Annex A (normative) Bases for calculation .15 Bibliography .18 iv @ IS0 2015 - All rights reserved