标准摘要
[中文适用范围]： 本文件规定了在低于环境温度（−196°C 至 25°C）下确定线性热膨胀系数的设备和程序，但须遵守测试样本可能的温度限制。 它不适用于在试验过程中由于失去水合水而发生尺寸变化或发生其他相变的产品。 [外文原描述]： This document specifies the equipment and procedures for determining the coefficient of linear thermal expansion at sub-ambient temperatures (−196 °C to 25 °C), subject to the possible temperature limitation of the test specimens. It is not applicable to products which experience dimensional changes during the test due to the loss of hydration water or which undergo other phase changes.
英文名称Thermal insulating products for industrial installations — Determination of the coefficient of linear thermal expansion at sub-ambient temperatures