This standard specifies the test methods for macrostructure and defect of steel by hot acid etching, cold acid etching (including dendritic crystal etching) and electrolytic etching.
This standard is applicable to the acid etching test for the macrostructure and defect of steel. The acid etching test for other materials may be implemented by reference to this standard.
2 Normative References
The following referenced document is indispensable for the application of this document. For dated reference, only the edition cited applies. For undated references, the latest edition of the document (including any amendments) referred to applies.
GB 8978-1996 Integrated Wastewater Discharge Standard
