GB/T 4910-2022 in English
VALIDTinned round copper wire
- Issued on:2022-07-11
- Implemented on:2023-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 4910-2022镀锡圆铜线》由TC422（全国裸电线标准化技术委员会）归口，主管部门为中国电器工业协会。
Introduction
Key points of the new standard upgrade
| Technical indicators | GB/T4910-2022 | Differences from the 2009 version |
|---|---|---|
| Nominal diameter range | TXY type expanded to 0.16-4mm | New TXY hardened model |
| Diameter tolerance | 4.000mm specification adopts ±1% tolerance | Manufacturing accuracy improved by 24% |
| DC resistivity | TXY requirement ≤0.0179Ω·mm²/m | Electrical performance indicators tightened by 5% |
Interpretation of key technical requirements
1. Material specifications
Copper wire billets must be made of GB/T3952 standard raw materials, with density error controlled within ±0.02g/cm³, and tin purity required to be ≥99.9% of the national standard tin ingot (GB/T728).
2. Mechanical properties
| Wire diameter (mm) | Tensile strength (MPa) | Elongation (%) |
|---|---|---|
| 0.16-0.5 | ≥415 | TXY≥1.0 |
| 2.0-4.0 | ≥353 |
Implementation and application guidance (H2)
Sample factory quality inspection plan example
- 3-10 trays of samples are taken from each batch, and two sets are sealed for backup
- The ductility test adopts the 200mm gauge method of GB/T4909.3 standard
- The solderability test preferably uses the fast solder ball method (≤2 seconds)
Compliance handling of controversial issues
Discretion for sample discoloration in GB/T4909.10 testing:
When abnormal color development of the solution occurs, a special calibration line with a diameter tolerance controlled at the middle value should be used for equipment cross-verification to prevent misjudgment caused by process differences.
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