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GB/T 45506-2025 Active
GB/T 45506-2025 Residual resistance ratio measurement—Residual resistance ratio of cavity-grade Nb superconductors
Abstract
This document describes the testing method for the residual resistance ratio (rRRR) of resonant cavity-grade niobium.
This document is applicable to high-purity niobium with an rRRR in the range of 150 to 600. The niobium superconductors described in this document have rectangular or circular cross-sections, with a cross-sectional area of 1 mm2 to 20 mm2, and a length that is no less than 10 times the width or diameter, but no more than 25 times the width or diameter.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 45506-2025 |
| CCS | Heavy metals and their alloys |
| ICS | Electronics, magnetism, and the measurement of electricity and magnetism. |
| Implement Date | 2025-11-01 |
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