Preview |
Foreword
1 Scope
2 Normative References
3 order Contents
4 Dimension and Shape
4.1 Dimension
4.2 Shape
5 Technical Requirements
5.1 Designation and chemical components
5.2 Smelting method
5.3 Delivery state
5.4 Hardness of steel products
5.5 Upset forging
5.6 Macrostructure and fracture
5.7 Non-metallic inclusions
5.8 Microporosities
5.9 Microstructure
5.10 Inhomogeneity of carbide
5.11 Decarburized layer
5.12 Surface quality
6 Test Methods
6.1 Quality inspection for surface of steel
6.2 Inspection for dimension and shape
6.3 Chemical composition analysis
6.4 Macrostructure and fracture inspection
6.5 Measuring for depth of decarburized layer
6.6 Inspection for non-metallic inclusion
6.7 Inspection for microstructure
6.8 Inspection for inhomogeneity of carbide
6.9 Microporosities inspection
6.10 Heat treatment system of specimen
6.11 Test methods for hardness and upset forging
6.12 Evaluating principle
7 Inspection Rules
7.1 Inspection and acceptance
7.2 Batching rules
7.3 Sampling number and position
7.4 Retest and judgment rules
8 Marking, Packaging and Quality Certificates
Annex A (Normative) Standard graph of high-carbon chromium bearing steel |
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