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Normas DIN – AENOR
DIN EN ISO 75-2:2012-01

DIN EN ISO 75-2:2012-01

Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite (ISO/DIS 75-2:2011); German version prEN ISO 75-2:2011 / Note: Date of issue 2012-01-09

Plastiques - Détermination de la température de fléchissement sous charge - Partie 2: Plastiques et ébonite (ISO/DIS 75-2:2011); Version allemande prEN ISO 75-2:2011 / Attention: Date de parution 2012-01-09

Kunststoffe - Bestimmung der Wärmeformbeständigkeitstemperatur - Teil 2: Kunststoffe und Hartgummi (ISO/DIS 75-2:2011); Deutsche Fassung prEN ISO 75-2:2011 / Achtung: Erscheinungsdatum 2012-01-09

Fecha Anulación:
2013-08 /Withdrawn
Equivalencias internacionales:

ISO/DIS 75-2 (2011-12)

prEN ISO 75-2 (2011-12)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 75-2:2013-08

This part of the standard specifies three methods, using different values of constant flexural stress, that can be used for the determination of the temperature of deflection under load of plastics (including filled plastics and fibre-reinforced plastics in which the fibre length, prior to processing, is up to 7,5 mm) and ebonite: - method A, using a flexural stress of 1,80 MPa; - method B, using a flexural stress of 0,45 MPa; - method C, using a flexural stress of 8,00 MPa. The standard deflection s used to determine the temperature of deflection under load corresponds to a flexural-strain increase <(Index)f> defined in this part of the standard. The initial flexural strain due to the loading of the specimen at room temperature is neither specified nor measured in this part of the standard. The ratio of this flexural-strain difference to the initial flexural strain depends on the modulus of elasticity, at room temperature, of the material under test. This method is therefore only suitable for comparing the temperatures of deflection of materials with similar room-temperature elastic properties.
Bend testing, Bending stress, Determination, Dimensional stability, Ebonite, Materials testing, Plastics, Temperature, Temperature measurement, Testing, Testing conditions, Thermal stability, Vulcanized rubber
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