How to handle the metal composition analysis and testing report
Date：2025-12-16 10:15:07 Classification
：【question】 Visits：
Metal composition analysis is indeed a crucial aspect in ensuring product quality and safety, indispensable in both industrial production and export trade.
Handling process for metal composition analysis and testing report
1. Clarify testing requirements
Determine the purpose of the test
Product quality control
Material grade identification
Element content detection
Hazardous substance screening
Performance index verification
Prepare relevant information
Metal type (ferrous metal, non-ferrous metal, etc.)
Approximate composition range (if any)
Requirements for testing standards (national standards, industry standards, international standards, etc.)
II. Selecting a testing institution
Qualification Requirements
Possess CMA certification (China Metrology Accreditation)
Possessing CNAS accreditation
Rich experience in related field detection
recommending institution
Deze Wei Testing CNAS Registration Number: L8083, a domestic third-party testing institution
III. Sample preparation and submission
Sample Requirements
The sample should be representative
Sample quantity: Typically, it requires more than 200g
Sample status: Both solid and debris are acceptable, with no contamination such as oil stains or rust
Submit materials
sample
Entrusted testing form (provided by the institution)
Relevant technical documentation (if available)
IV. Testing Items and Methods
Main testing items
Analysis of major elements (C, Si, Mn, P, S, etc.)
Trace element analysis (Cr, Ni, Mo, Cu, etc.)
Gas element analysis (O, N, H)
Detection of harmful elements (Pb, Cd, Hg, As, etc.)
Common detection methods
| Detection method | Scope of application | Detection limit | Characteristics |
| Spark direct reading spectrometry | Solid metal | 0.001% | Fast and accurate, suitable for pre-furnace analysis |
| ICP-MS | Solution sample | ppb level | High sensitivity, simultaneous analysis of multiple elements |
| X-ray fluorescence spectrometry | Solid sample | 0.01% | Non-destructive testing, suitable for rapid screening |
| Atomic absorption spectrometry | Solution sample | ppm level | Single element analysis, high accuracy |
| Carbon-Sulfur Analyzer | Carbon, Sulfur | 0.0001% | Dedicated for carbon and sulfur analysis |
V. Testing Process and Timeliness
Testing Process
Sample reception and confirmation
Sample pretreatment (if necessary)
Instrumental analysis and detection
Data processing and result review
Report preparation and issuance
inspection cycle
Routine testing: 3-5 working days
Expedited testing: 1-2 business days
Special projects: to be determined based on specific circumstances
VI. Cost Reference
influencing factors
Number of detected elements
Selection of detection method
Detection accuracy requirements
Sample Quantity
price range
Routine element analysis: 300-800 yuan per sample
Complete element analysis: 800-2000 yuan per sample
Special project testing: pricing based on specific projects
VII. Report Content
Basic Information
Report number, commissioning unit, sample information
Test date, test location, test basis
Test results
Element name, standard requirement, test value, unit
Qualification judgment
Report Attachment
Qualification certificate of testing institution
Relevant maps (if needed)
VIII. Precautions
Choose appropriate testing standards
Ensure the representativeness of the sample
Clarify testing needs and requirements
Check the completeness and accuracy of the report
Properly keep the test report
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