本文件已被宣布为“稳定”，不再接受货币定期审查。用户负责验证参考资料和持续适用性或技术要求。新技术可能存在。本规范涵盖了片状铸造甲基丙烯酸甲酯塑料的一个等级。该板材通常用于需要尺寸稳定性、光学清晰度、良好的电气性能和良好的户外耐候性的制造零件、成型零件或其他零件，但用途不限于此类应用。

This document has been declared "Stabilized" and will no longer be subjected to periodic reviews for currency. Users are responsible for verifying references and continued suitability or technical requirements. New technology may exist.This specification covers one grade of cast methyl methacrylate plastic in the form of sheet.This sheet has been used typically for fabricated parts, formed or otherwise, requiring dimensional stability, optical clarity, good electrical properties, and excellent outdoor weatherability, but usage is not limited to such applications.