GB/T 38714-2020 in English
VALIDHigh thermal conductivity magnesium alloy profiles
- Issued on:2021-02-01
- Implemented on:2021-02-01
- File Format:PDF
- Delivery:Within 1 day
$86.00
《GB/T 38714-2020高导热镁合金型材》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
Analysis of core technical requirements of the standard
| Performance indicators | M1C-H112 | ZK60A-T5 | Test standards |
|---|---|---|---|
| Tensile strength (MPa) | ≥215 | ≥310 | GB/T16865 |
| Yield strength (MPa) | ≥140 | ≥235 | |
| Elongation after fracture (%) | ≥13.0 | ≥12.0 | |
| Thermal conductivity (W/(m·K)) | ≥130 | ≥115 | GB/T22588 |
Material properties and typical applications
ME20M profile is particularly suitable for aerospace cooling components due to its thermal conductivity of more than 120W/(m·K) and good corrosion resistance. ZK60A-T5 obtains a high strength of 310MPa through aging treatment, which has unique advantages in the field of military armor.
Key points of quality control
- Low-power microstructure testing strictly complies with GB/T4297, and cracks, pores, and shrinkage defects are prohibited
- Thermal conductivity test needs to be sampled at the thickness minimum part of the profile extrusion end
- The depth of appearance defects shall not exceed the negative deviation value
Technology evolution analysis
Compared with the traditional magnesium alloy profile standard GB/T5156, this standard adds a thermal conductivity classification index, reflecting my country's technological breakthrough in the field of heat dissipation materials. The addition of rare earth elements (such as neodymium in ZE20M) achieves a synergistic improvement in thermal conductivity and strength.
Implementation Suggestions
- M1C-H112 is preferred for heat sinks of electronic equipment, which has a thermal conductivity of 130W/(m·K) and a strength of 215MPa
- ZE20M is recommended for components that require welding, as its 19% elongation is better than similar materials
- When purchasing in bulk, suppliers should be required to provide profiles of the same melt to ensure performance consistency
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