Foreword 1 Scope 2 Normative References 3 Codes 4 Technical Requirements 4.1 General requirements 4.2 Smelting methods 4.3 Designation and chemical composition 4.4 Internal soundness and surface quality 4.5 Depth of surface discontinuities 4.6 Depth of decarburization 4.7 Non-metallic inclusions 4.8 Core segregation 4.9 Tensile strength 4.10 Austenitic grain size 5 Test Methods and Inspection Rules Annex A Annex B |