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Dentistry — Refractory investment and die material
ISO 15912:2016 classifies such products into types and classes, according to their intended use and the burn-out procedure recommended by the manufacturer.
It also gives requirements for marking, labelling and manufacturer's instructions.
It specifies requirements for the essential physical and mechanical properties of the products and the test methods to be used for determining them.
NOTE 1 Compliance with all of the requirements presented in Clause 5 may not be necessary for some products, and a requirement might not be applicable to a product with a particular binder chemistry or be intended for an application in which that requirement is irrelevant. When this is the case, a clear statement to this effect is given according to Clause 5.
NOTE 2 A specific quantitative requirement for setting expansion is not included in this International Standard. If the setting expansion of gypsum-bonded investment is measured, then the procedure given in ISO 6873[1] can be considered ? a procedure not recommended, however, for investment materials with other binders.
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