Foreword 1
1 Scope 1
2 Normative References 1
3 order Requirements 1
4 Technical Requirements 2
4.1 Manufacturing method 2
4.2 Designation and chemical composition 3
4.3 Mechanical properties 3
4.4 Uniformity of hardness 4
4.5 Nondestructive testing 4
4.6 Grain size and non-metallic 6
4.7 FATT50 6
4.8 Heat stability testing 6
4.9 High temperature mechanical property 6
5 Test Methods and Inspection Rules 6
5.1 Chemical analysis 6
5.2 Mechanical properties 6
5.3 Uniformity of hardness 7
5.4 Magnetic or acid etching testing 7
5.5 Ultrasonic testing 7
5.6 Heat stability testing 7
5.7 Inspection of centre bore 7
5.8 Metallographic testing 8
5.9 Residual stress 8
5.10 Retest 8
5.11 Re-heat treatment 8
6 Acceptance and Certificate of Qualified 8
7 Marking and Packaging 9 | 
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