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Norm

ÖNORM EN ISO 75-2

Issue date: 2006 09 01

Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite (ISO 75-2:2004) (consolidated version)

This part of ISO 75 specifies three methods, using different values of constant flexural stress, that can be used for the determination of the temperature of deflection ...
Withdrawn: 2013 07 15
Publisher:
Austrian Standards International
Format:
Digital | 16 Pages
Language:
German | English | Download GER/ENG
Optionally co-design standards:
This part of ISO 75 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 fibrereinforced 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 Δs used to determine the temperature of deflection under load corresponds to a flexuralstrain increase defined in this part of ISO 75. The initial flexural strain due to the loading of the specimen at room temperature is neither specified nor measured in this part of ISO 75. 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 roomtemperature elastic properties. NOTE The methods give better reproducibility with amorphous plastics than with semi-crystalline ones. With some materials, it may be necessary to anneal the test specimens to obtain reliable results. Annealing procedures, if used, generally result in an increase in the temperature of deflection under load (see 6.6). For additional information, see ISO 75-1:2004, clause 1.
ÖNORM EN ISO 75-2
2013 07 15
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite (ISO...
Norm
ÖNORM EN ISO 75-2
2006 09 01
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite (ISO...
Norm
ÖNORM EN ISO 75-2
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Plastics - Determination of temperature of deflection under load - Part 2: Plastics, ebonite and lon...
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ÖNORM EN ISO 75-2
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Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite (ISO...
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