# NEN-EN-ISO 75-2

## Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite

active, Most Current
 Organization: NEN Publication Date: 1 May 2013 Status: active Page Count: 24 ICS Code (Thermosetting materials): 83.080.10 ICS Code (Plastics in general): 83.080.01 ICS Code (Rubber): 83.060
##### scope:

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 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, Δs, used to determine the temperature of deflection under load corresponds to a flexural-strain increase, Δef, 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 increase 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.

### Document History

NEN-EN-ISO 75-2
May 1, 2013
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
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...
January 1, 2012
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
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...
May 1, 2007
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
Title has been changed
May 1, 2004
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
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...
April 1, 2001
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
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...
March 1, 1996
Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
The principle of the method specified is subjecting a standard test specimen to a bending stress to produce one of the nominal surface stresses (method A: 1,80 MPa, method B: 0,45 MPa, method C: 8,00...