GB/T 15159-2020 in English
VALIDComposite material strips of precious metals and their alloys
- Issued on:2020-11-19
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 5 business days
Price(USD):
$370.00
$359.00
$359.00
《GB/T 15159-2020贵金属及其合金复合带材》由TC243(全国有色金属标准化技术委员会)归口,TC243SC5(全国有色金属标准化技术委员会贵金属分会)执行,主管部门为中国有色金属工业协会。
Introduction
Core changes in standards and technological evolution
| Technical indicators | 2008 edition | 2020 edition | Range of change |
|---|---|---|---|
| Multi-layer material grades | 32 kinds | 62 kinds | +93.8% |
| Supply status | 3 kinds | 5 kinds | Added extra hard state (H06) and 1/4 hard state (H01) |
| Surface roughness | Rz index | R≤0.1μm(Grade I) | Change in measurement benchmark |
Analysis of key performance indicators
1. Composite structure type
Two innovative structures, surface convex composite and through-composite, are added:
- Surface convex composite: The composite material is locally convex, suitable for contact reinforcement scenarios
- Through-composite: The composite material penetrates the base layer to improve the conductivity continuity
2. Dimension control system
Typical case: For a contact composite with a total thickness of 0.1mm
| Application scenarios | Recommended composite materials | Base layer matching solution |
|---|---|---|
| High voltage electrical contact | AgSnO2 series | TU1 copper strip |
| Precision electronic connectors | Au60Ag | BZn18-20 white copper |
2. Key points of quality control
- In the composite firmness test, the 2020 version will adjust the test position to the bonding edge
- New side curvature requirements: ≤8mm/m when the width is ≤6mm
- Surface roughness detection uses interference microscopy method
Background of standard formulation
This standard was jointly revised by 7 units including Guiyan Platinum Industry, mainly in response to:
- The demand for improved life of electrical contact materials in new energy vehicles
- The precision requirements of precision composite materials for miniaturization of 5G communication equipment
- The strict standards for material reliability in the military field
Sample only — not a preview of GB/T 15159-2020

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