Foreword 1 Scope 2 Normative references 3 order requirements 4 Technical requirements 4.1 Manufacture 4.2 Chemical composition 4.3 Mechanical performance 4.4 Surface quality of castings 4.5 Form and dimension tolerance 5 Test methods and inspection rules 5.1 Chemical composition analysis 5.2 Mechanical performance test 5.3 Retest and re-heat treatment 5.4 Surface roughness 6 Certificate of qualification 7 Marking and packaging
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