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EVS-EN IEC 61788-23:2021

Superconductivity - Part 23: Residual resistance ratio measurement - Residual resistance ratio of cavity-grade Nb superconductors

General information
Valid from 15.10.2021
Base Documents
IEC 61788-23:2021; EN IEC 61788-23:2021
Directives or regulations
None
Standard history
Status
Date
Type
Name
15.10.2021
Main
16.10.2018
Main
This part of IEC 61788 addresses a test method for the determination of the residual resistance ratio (RRR), rRRR, of cavity-grade niobium. This method is intended for high-purity niobium grades with 150 < rRRR < 600. The test method is valid for specimens with rectangular or round cross-section, cross-sectional area greater than 1 mm2 but less than 20 mm2, and a length not less than 10 nor more than 25 times the width or diameter.
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