GB/T 41883-2022 in English
VALIDAdditive manufacturing tantalum and tantalum alloy by powder bed fusion
- Issued on:2022-10-12
- Implemented on:2023-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 41883-2022粉末床熔融增材制造钽及钽合金》由TC243（全国有色金属标准化技术委员会）归口，TC243SC4（全国有色金属标准化技术委员会粉末冶金分会）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
This standard systematically specifies for the first time the full process requirements for the manufacture of tantalum and tantalum alloys using powder bed fusion technology, focusing on the key indicators of raw material purity (three types of grades Ta1/Ta2/TaNb3) and relative density ≥ 99%, and innovatively introduces anisotropic mechanical property requirements (Z-axis strength is generally 5-10% higher than XY-axis).
Comparison Analysis of Technical Parameters
| Key Indicators | Ta1 | TaNb3 | Ta2 |
|---|---|---|---|
| Tensile Strength XY/Z Axis (MPa) | 210/230 | 220/230 | 460/480 |
| Elongation XY/Z Axis (%) | 25/25 | 25/25 | 15/15 |
| Oxygen Content Grading | Type I≤0.03%, Type II≤0.05% | Unclassified | |
Defect Control Innovation Requirements
The standard adopts a dual-track defect determination: surface defects allow pores below 0.5mm (≤4 1.5mm defects in a 50mm area), and internal defects are more stringent (0.3mm or less is not counted, ≤5 1.0mm defects in a 50mm area). Medical implants are recommended to use Type I low-oxygen content materials.
Implementation recommendations
- The procurement process needs to clarify the oxygen content classification (Type I/II) and Z-axis performance requirements
- It is recommended to equip industrial CT equipment for internal defect detection
- Ta1-Ⅰ type materials are preferred in the medical field to ensure biocompatibility
Standard evolution analysis
Compared with traditional casting standards, this document establishes for the first time the following that are unique to additive manufacturing:
- Anisotropic mechanical properties index system
- Linked quality control of powder raw materials and finished products
- Defect classification system based on fluorescent penetrant testing
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