EN 27490 : 1991

Name: EN 27490 : 1991
Brand: CEN

Superseded

View Superseded by

DENTAL GYPSUM-BONDED CASTING INVESTMENTS FOR GOLD ALLOYS

Superseded date

01-12-2000

Published date

12-01-2013

Publisher

Comite Europeen de Normalisation

Foreword
1 Scope
2 Normative references
3 Classification
4 Requirements
5 Sampling
6 Test conditions and preparation of test specimens
7 Test methods
8 Information to be supplied by manufacturer
9 Packaging
10 Marking
Annexes
A - Apparatus for measuring setting expansion
B - Apparatus for measuring thermal expansion

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.

Committee	TC 55
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Superseded
SupersededBy	EN ISO 7490 : 2000

Standards	Relationship
UNE-EN 27490:1993	Identical
NEN ISO 7490 : 1992	Identical
BS EN 27490:1992	Identical
I.S. EN 27490:1992	Identical
NF EN 27490 : 1992	Identical
SNV DIN EN 27490 : 1991	Identical
DIN EN 27490:1991-11	Identical
ISO 7490:2000	Identical
SNV NF EN 27490 : 1992	Identical
UNI EN 27490 : 1992	Identical
NBN EN 27490 : 1992	Identical

ISO 3310-1:2016	Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth
ISO 1562:2004	Dentistry Casting gold alloys
ISO 1561:1995	Dental casting wax
ISO 7500-1:2015	Metallic materials Calibration and verification of static uniaxial testing machines Part 1: Tension/compression testing machines Calibration and verification of the force-measuring system