UNI EN 27490:1992被替代

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.

UNI EN ISO 7490:2001

NF EN 27490:1992 - Identical

DIN EN 27490 (1991-11) - Identical

BS EN 27490:1992 - Identical

I.S. EN 27490:1992 - Identical

ONORM EN 27490:1992 - Identical

ISO 7490:2000 - Equivalent

SS EN 27 490:1992 - Identical

UNE EN 27490:1993 - Identical