DIN EN 27490 : 1991被替代
DENTAL GYPSUM-BONDED CASTING INVESTMENTS FOR GOLD ALLOYS
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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基本信息
标准编号： DIN EN 27490 : 1991
标准类别：Standard
出版单位：German Institute for Standardisation (Deutsches Institut für Normung)
标准页数：0
标准简介
Specifies requirements for, and a classification of, gypsum-bonded casting investments together with test methods to be used to determine compliance with these requirements. Applies to gypsum-bonded investments suitable for casting dental gold alloy which have liquid temperatures not more than 1080 Degrees C. Coverage includes: classification, sampling, packaging and marking. Also includes annexes, tables and diagrams.
本标准替代的旧标准
