GB/T 39151-2020 in English
VALIDNickel beryllium titanium alloy strip for high temperature elastic component
- Issued on:2020-10-11
- Implemented on:2021-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 39151-2020高温弹性元件用镍铍钛合金带材》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
Interpretation of the core content of the standard
Nickel-beryllium-titanium alloy strip is a key material for elastic components in high-temperature environments, and its performance directly affects the reliability of instrument industry products. This standard systematically stipulates the technical specifications for NBe2-0.5 grade strip.
Material properties and technical requirements
| Performance indicators | Soft state (M) | Hard state (Y) | Solid solution state (C) | CY state | CS state |
|---|---|---|---|---|---|
| Tensile strength (MPa) | ≤883 | ≥960-1080 | ≥1519 | 900-1300 | ≥1519 |
| Vickers hardness HV | ≤250 | ≤370 | ≤360 | ≥500 | ≥500 |
| Elongation after fracture(%) | ≥27 | ≥2-5 | ≥30 | ≥3-4 | ≥3-5 |
Key Technical Innovations
Breakthrough in high-temperature performance: The standard stipulates for the first time that the tensile strength of hard strip under 400℃ environment must be ≥940MPa, filling the domestic technical gap in high-temperature elastic materials. Through the beryllium-titanium composite strengthening mechanism, the material can still maintain excellent elastic modulus (17.7-21.3×104MPa) at high temperatures.
Grain size control: The grain size of the solid solution strip is required to be ≤0.055mm, and fine grain strengthening is achieved through special heat treatment process to improve the fatigue life of the material.
Implementation and application suggestions
- Material selection guidance:It is recommended to use CS state strip for diaphragm elements, and CY state material for spring elements
- Processing attention:Intermediate annealing is required for cold bending of hard strip to avoid micro cracks
- Quality monitoring:It is recommended to add high temperature endurance performance test to ensure stability under long-term working temperature
Standard evolution analysis
Compared with the previous generation of standards, the main improvements of this version include: ①Adding technical requirements for solution heat treatment + aging state (CS); ②Refining the mechanical performance indicators of strips of different thicknesses; ③Introducing high temperature mechanical performance test specifications. These revisions reflect the new demand for high temperature elastic components in the fields of aerospace, oil exploration, etc.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 44759-2024 in English
High purity nickel target
2024-10-26 -
GB/T 4435-2010 in English
Nickel and nickel alloys bars
2011-01-14 -
GB/T 2072-2020 in English
Nickel and nickel alloy strip and foil
2020-09-29 -
GB/T 26016-2021 in English
High purity nickel
2021-12-31 -
GB/T 5235-2021 in English
Designation and chemical composition of wrought nickel and nickel alloy
2021-08-20
