1.1本规程涵盖了标准玻璃-金属夹层密封件的制备和测试，用于确定玻璃中的应力或确定玻璃和金属之间的热膨胀（或收缩）失配程度。试验按照方法F218（第2节）进行。 1.2本规程适用于电子元件生产中通常密封在一起的所有玻璃和金属（或合金）组合。 1.3推导不匹配的试验的实际极限约为300 ppm，超过该极限玻璃可能破裂。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This practice covers the preparation and testing of a reference glass-metal sandwich seal for determining stress in the glass or for determining the degree of thermal expansion (or contraction) mismatch between the glass and metal. Tests are in accordance with Method F218 (Section 2). 1.2 This practice applies to all glass and metal (or alloy) combinations normally sealed together in the production of electronic components. 1.3 The practical limit of the test in deriving mismatch is approximately 300 ppm, above which the glass is likely to fracture. 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.