YS/T 448-2025Inspection method of structure for cast and wrought copper and copper alloys products (English PDF)
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Issued by
Ministry of Industry and Information Technology
Level / Type
National · Recommended
Issue date
December 17, 2025
Implementation date
July 1, 2026
Scope
YS/T 448-2025 (Inspection method of structure for cast and wrought copper and copper alloys products) is available as an English-translated PDF.
YS/T 448-2025 — This standard specifies the sample preparation, etching agents, etching methods, microstructure inspection, and test reports for the macrostructure and microstructure of copper and copper alloy castings and processed products.
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Document preview — YS/T 448-2025
National Standard of the People's Republic of China
- ICS
- 77.040.99
- Classification
- H 24
- Replacing
- YS/T 448-2002, YS/T 449-2002
Issued by: Ministry of Industry and Information Technology
Contents
- What this standard covers1
- Document data2
What this standard covers
This standard specifies the sample preparation, etching agents, etching methods, microstructure inspection, and test reports for the macrostructure and microstructure of copper and copper alloy castings and processed products. This standard applies to the inspection of the macrostructure of copper and copper alloy castings and processed products using the naked eye, a magnifying glass, or a stereomicroscope, and to the inspection of the microstructure of copper and copper alloys using a metallographic microscope.
Document data
International classification (ICS): 77.040.99.
Chinese classification (CCS): H24.
Supersedes the earlier edition YS/T 448-2002, YS/T 449-2002.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
Referenced standards
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YS/T 1115.7-2026 — Methods for chemical analysis of copper, lead, zinc ores and tailings - Part 7: Determination of molybdenum content - Thiocyanate spectrophotometric method
YS/T 1115.8-2026 — Methods for chemical analysis of copper, lead, zinc ores and tailings - Part 8: Determination of fluorine content - Ion-selective electrode method and ion chromatography
YS/T 1115.9-2026 — Methods for chemical analysis of copper, lead, zinc ores and tailings - Part 9: Determination of arsenic content - Hydride generation-atomic fluorescence spectrometric and potassium bromate titrimetric method
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YS/T 448-2025
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