How to handle the metal composition analysis and testing process
Date：2025-03-05 10:15:09 Classification
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The process and key information of metal composition analysis and testing are summarized in combination with industry specifications and actual application scenarios for reference:
I. Testing Process
1. Consultation and Demand Confirmation
- Contact the testing agency to communicate the purpose of the test (such as quality control, failure analysis, R&D support, etc.), and clarify the test items (composition analysis, performance testing, environmental testing, etc.).
- Confirm the test standards (such as GB/T 20066, ASTM E34, etc.) and the purpose of the report (such as certification, R&D, quality improvement).
2. Sample preparation and submission
- Prepare representative samples (such as metal blocks, chips or powders) according to the requirements of the agency, and avoid contamination or oxidation.
- Fill in the application form and submit the sample. Some agencies support mailing or on-site inspection.
3. Testing and Analysis Phase
- Composition analysis: Use spectral analysis (XRF, ICP-MS), mass spectrometry and other technologies to determine the type and content of elements.
- Performance testing (optional): such as mechanical properties (hardness, tensile), corrosion resistance, and heat treatment effect evaluation.
- Microstructure analysis (optional): observe grain distribution, phase composition, etc. through a microscope.
4. Report generation and delivery
- The testing agency issues a detailed report, including data results, analysis methods, conclusions and suggestions, and partially supports certification services.
- The delivery form includes electronic or paper reports, and the cycle is usually 5-7 days.
2. Core testing items
1. Conventional component analysis
- Quantification of major elements (iron, aluminum, copper, etc.) and trace elements (tin, lead, chromium, etc.).
2. Hazardous substance detection
- Heavy metals (arsenic, mercury) and environmental protection indicators (RoHS, REACH).
3. Physical and mechanical properties
- Density, hardness, tensile strength, ductility, etc.
4. Failure analysis
- Trace material defects or process problems for problems such as fracture and corrosion.
3. Reference standards and qualifications
- Domestic standards: GB/T 20066 (chemical composition sampling), GB/T 223 series (element analysis methods).
- International standards: ASTM E34 (general chemical analysis), ISO 17025 (laboratory qualifications).
- Qualification requirements: Priority should be given to institutions with CNAS and CMA certification (such as Dezewei Testing).
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