GB/T 33369-2016 in English
VALIDAluminium alloy clad sheets,strips and foils for brazing
- Issued on:2016-12-30
- Implemented on:2017-11-01
- File Format:PDF
- Delivery:Via email within 5 business days
$291.00
| Standard No: | GB/T 33369-2016 |
| Document status: | VALID |
| Title in English: | Aluminium alloy clad sheets,strips and foils for brazing |
| Title in Chinese: | 钎焊用铝合金复合板、带、箔材 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2016-12-30 |
| Implemented on: | 2017-11-01 |
| ICS Classification: | 77.150.10-Aluminium products |
| Chinese Classification: | H61-Light metals and their alloys |
| Professional Classification: | GB-National Standard |
| Related Keywords: | aluminium alloy clad sheets
aluminum alloy composite plates alloy composite plates aluminum alloy good brazing performance |
| Related Topics: | FeCrAl foil for metal honeycomb
gb/t33369 Strip Aluminum strip layer Composite board Foil Aluminum and aluminum alloy plate, strip and foil industry Clean production of aluminum and aluminum alloy plate, strip and foil industry GBT33369 GB/T 33369-2016 Composite copper foil group Composite copper foil related American standard composite board Detection of composite copper foil |
《GB/T 33369-2016钎焊用铝合金复合板、带、箔材》由TC243（全国有色金属标准化技术委员会）归口，TC243SC1（全国有色金属标准化技术委员会轻金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
GB/T 33369-2016 Interpretation of the Standard for Aluminum Alloy Composite Plates, Strips and Foil for Brazing
1. Standard Background and Technical Evolution Analysis
GB/T 33369-2016 is a national standard formulated by China for aluminum alloy composite materials for brazing, aiming to regulate product performance, test methods and quality requirements. The standard was proposed by the Nonferrous Metals Industry Association and is managed by the National Technical Committee for Standardization of Nonferrous Metals.
With the widespread application of brazing technology in the fields of automobile, aerospace and electronic manufacturing, the demand for aluminum alloy composite materials is growing. The formulation of this standard fills the gap in related fields in China and ensures the quality and consistency of products.
2. Standard framework comparison table
| Standard dimension | GB/T 33369-2016 | International comparison (such as ISO/ASTM) | Company internal standard reference |
|---|---|---|---|
| Grade classification | 4A13, 4A17, etc. | No direct correspondence, conversion and adaptation are required | Reference to company historical data |
| Chemical composition requirements | Limits on the content of elements such as Si, Fe, Cu, etc. | Similar to ASTM B209 specification | Higher than the general industry standard |
| Dimensional deviation range | Thickness: ±1.5%, width: ±2% | Strictly controlled within 0.3% | Higher customization requirements |
3. Implementation suggestions and case analysis
Case 1: Application in automobile heat exchanger manufacturing
When selecting aluminum alloy composite plates for brazing, an automobile manufacturer selected the material grade 4A13/H24. The material is 0.25mm thick and 1200mm wide.
In actual application, the material showed excellent corrosion resistance and good brazing performance, but its tensile strength was found to be slightly lower than expected (the measured value was 165N/mm², and the standard requirement was ≥170N/mm²). After analysis, the problem lies in the chemical composition control of the matrix alloy.
Suggestion: Chemical composition monitoring should be strengthened during production, especially the ratio control of Si and Fe elements.
Case 2: Application in the field of electronic packaging
An electronic product manufacturer selected 7A11/H26 aluminum alloy composite foil with a thickness of 0.08mm and a width of 16mm.
The test results show that the cupping value of the material reaches 9mm, far exceeding the standard requirement (≥6mm), proving that it has excellent performance in deep drawing. However, the Rp0.2 index in its room temperature tensile mechanical properties is only 85N/mm², slightly lower than expected (the standard requirement is ≥90N/mm²).
Suggestions: Optimize the rolling process and improve the uniformity of materials to improve the mechanical properties.
4. Implementation considerations and suggestions
- Quality control: Strengthen chemical composition analysis and coverage rate detection to ensure compliance with standard requirements.
- Process optimization: Adjust rolling parameters according to specific application scenarios to obtain optimal performance.
- Supply chain management: It is recommended to establish long-term cooperative relationships with qualified suppliers to ensure material consistency.
- Standard promotion: Regularly organize internal training to ensure that technical personnel are familiar with standard requirements.
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