GB/T 36398-2018 in English
VALIDLanthanum cerium-magnesium alloy
- Issued on:2018-06-07
- Implemented on:2019-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$59.00
《GB/T 36398-2018镧铈镁合金》由TC229（全国稀土标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Interpretation of GB/T 36398-2018, the National Standard of the People's Republic of China
Analysis of the Background of Standard Formulation and Technology Evolution
GB/T 36398-2018 "Lanthanum-Cerium-Magnesium Alloy" is an important specification for high-performance rare earth magnesium alloy materials. Its formulation is based on the abundance of rare earth resources in my country and its strategic position in industrial applications. This standard fills the gap in the field of rare earth magnesium alloys in China and provides a scientific basis for the production, inspection and application of lanthanum-cerium-magnesium alloys.
With the increasing demand for lightweight automobiles and miniaturization of electronic equipment, rare earth magnesium alloys have become key materials due to their excellent physical properties (such as high temperature stability and corrosion resistance). The formulation of GB/T 36398-2018 reflects the important achievements of my country's technological progress and standardization construction in the field of new materials technology.
Comparison of standard frameworks
| Standard dimensions | GB/T 36398—2018 | Comparison with similar international standards |
|---|---|---|
| Product range | Lanthanum-cerium-magnesium alloy, used in 3C electronics and automotive industries | Wider coverage, including other rare earth elements |
| Chemical composition requirements | Clear La, Ce, Mg content and impurity limits | Focus on high temperature performance and corrosion resistance |
| Test methods | Citing GB/T series standards to ensure detection accuracy | Using internationally accepted testing equipment |
Detailed explanation of standard content
Product grades and classifications
GB/T 36398-2018 specifies the product grades of lanthanum-cerium-magnesium alloys, which are divided into six types, including LaCeMg-30A and LaCeMg-30B. The chemical composition and performance indicators of each grade have been strictly tested and verified to meet the needs of different application scenarios.
| Grade | RE content (%) | Mg content (%) | Impurity limit |
|---|---|---|---|
| LaCeMg-30A | 30.0±2.0 | Residue | ≤0.03 rare earth impurities, ≤0.15 non-rare earth impurities |
Chemical composition and quality control
Chemical composition is the core indicator of lanthanum-cerium-magnesium alloy. Table 1 lists in detail the rare earth elements (RE), magnesium content and impurity limit requirements of each grade of products to ensure the consistency and reliability of product performance.
Actual application cases
For example, in the production of automobile engine cylinder blocks, LaCeMg-20B is widely used due to its high rare earth ratio and good mechanical properties. Its magnesium content is 20.0±2.0%, and impurities are controlled within the range of ≤0.1%, ensuring the high strength and heat resistance of the material.
Implementation suggestions
Suggestions for manufacturers
- Strictly purchase raw materials and conduct quality inspections in accordance with standards to ensure that the chemical composition meets the requirements.
- Establish a complete testing system and equip with advanced analytical equipment (such as high-frequency infrared absorption instrument).
- Optimize production processes, reduce the introduction of impurities, and improve product consistency.
User's Suggestions
- When selecting a supplier, ask for quality certificates and test reports.
- Choose the appropriate grade according to the specific application scenario to ensure performance matching.
- When storing, pay attention to moisture and sunlight to avoid material performance degradation.
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