T/CSTM 01625-2026 Active Group standards

T/CSTM 01625-2026 Test method for the linear expansion coefficient of materials in cryogenic temperature based on dual-frequency laser interferometry

Publish Date: 2026-04-07 Implement Date: 2026-07-07 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CSTM 01625-2026

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Medical optical instruments and equipment, and endoscopes

ICS Name: Other standards related to optics and optical measurement

Publish Date: 2026-04-07

Implement Date: 2026-07-07

Scope

This document describes the method of determining the linear expansion coefficient of materials at extremely low temperatures using dual-frequency laser interferometry, including terms and definitions, method overview, instrumentation, reagents and materials, test procedures, test data processing, precision and measurement uncertainty, quality assurance and control, and test reports. This document is applicable to the testing of the linear expansion coefficient of rigid materials in the temperature range of 20K to 300K. Other materials can be used as reference for testing.