ISO fire testing and IEC fire testing

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ISO fire testing & IEC fire and flammability tests

Like the UL94 tests, the IEC and the ISO has different types of fire tests to compare plastics material in terms of their burning behaviour. Each type of test requires a specific gas flow rate, flame height, specimen and flame orientation, and time of exposure to the flame. Likewise measurements such as afterflame times, afterglow times and burning rate are performed. The results obtained are then compared against a standard set of test criteria and the material is given a rating based on the criteria it satisfies.

UL94 fire testing, ASTM fire testing, ISO fire testing

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test/activityratingapplication
Horizontal Burning TestHBPlastic materials used to make enclosures for portable, attended, intermittent-duty, household-use appliance (i.e., hair dryers) or for decorative parts.
20mm Vertical Burning TestV-0, V-1 or V-2Plastic materials used to make portable, unattended, intermittent-duty, household-use appliances (i.e., coffee makers).
125mm Vertical Burning Test5VA or 5VBPlastic materials to be used in structural parts, enclosures and insulators in consumer electronic products. This test is the most intense test in UL94.
Thin Material Vertical Burning TestVTM-0,VTM-1 or VTM-2Plastic materials to be used as very thin films, generally not capable of supporting themselves in a horizontal position. These are usually assigned to substrates on flexible printed circuit boards.
Horizontal Burning Foamed Material TestHBF, HF-1 or HF-2Plastic materials for low-density foam materials commonly used in fabricating speaker grills and sound-deadening material.
ISO EN 11925-2
ASTM D635HBPolymeric materials used for parts in devices and appliances.
ASTM D3801V-0, V-1 or V-2Polymeric materials used for parts in devices and appliances. Cannot be used to classify materials used in building construction or finishing.
ASTM D50485VA or 5VBPolymeric materials used for parts in devices and appliances. Cannot be used to classify materials used in building construction or finishing.
Can be used to classify non-metallic materials if found appropriate.
ASTM D4804VTM-0,VTM-1 or VTM-2Plastic materials to be used as very thin films, generally not capable of supporting themselves in a horizontal position. These are usually assigned to substrates on flexible printed circuit boards.
ASTM D4986HBF, HF-1 or HF-2Low density foam materials.
UN Test N.1 Division 4.1Non Combustible, PGII, PGIIITest method for readily combustible solids to determine UN packaging group
BS EN 60695-11-10
IEC 60695-11-10 method A
HB, HB40, HB75Polymeric materials used for parts in devices and appliances. Test method used as a means of comparing the rate of burning, extent/time of burning, material selection and quality control of polymeric materials.
BS EN 60695-11-10
IEC 60695-11-10 method B
V-0, V-1 or V-2Polymeric materials used for parts in devices and appliances. Used for material selection and quality assurance. Cannot be used to classify materials used in building construction or finishing.
BS EN 60695-11-20
IEC 60695-11-20
5VA or 5VBPolymeric materials used for parts in devices and appliances. Used for material selection and quality assurance. Cannot be used to classify materials used in building construction or finishing.
Can be used to classify non-metallic materials if found appropriate.
ISO 9773 VTM-0,VTM-1 or VTM-2Plastic materials to be used as very thin films, generally not capable of supporting themselves in a horizontal position. These are usually assigned to substrates on flexible printed circuit boards.
ISO 9772HBF, HF-1 or HF-2Means of comparing the burning characteristics of foamed materials of like thickness density, cell size, skin irregularities and the effect of falling particles. It is useful for quality control, specification acceptance and research and development.
UL94 fire testing

The following figure illustrates the flammability of material in relation to the ratings assigned, 5VA/VB being the least flammable while HB/HBF being the most flammable.

plastic testing

full list of tests