FIRE STANDARD
ISO 4589-2 fire standard for plastics
ISO 4589-2 fire standard for plastics
ISO 4589-2 is an international fire standard that specifies the method for determining the burning behavior of plastics by measuring the oxygen index. This standard is vital in assessing how plastics will support combustion and under what conditions they may or may not burn.
Test Specimen
Under ISO 4589-2, a plastic sample is subjected to a controlled flame in an atmosphere with varying concentrations of oxygen. The test determines the minimum oxygen concentration in a mixture of oxygen and nitrogen that is required to just sustain combustion of the plastic sample for a specified time.
APPLICATION
The standard is crucial for industries where plastic materials need to have a known resistance to ignition and burning, such as in electrical, automotive, aerospace, and construction industries. It ensures that plastics used in these sectors are less likely to contribute to the spread of fire.
CLASSIFICATION
Plastics that meet the requirements of ISO 4589-2 are classified by their oxygen index level. This classification helps manufacturers and designers choose materials with appropriate fire-retardant properties for their intended applications
COMPLIANCE
Manufacturers of plastic products use ISO 4589-2 to demonstrate compliance with fire safety regulations. Adhering to this standard is essential for the marketing of plastics in many sectors, particularly where fire safety is of utmost concern.
GLOBAL RECOGNITION
ISO 4589-2 is recognized worldwide and often serves as a benchmark for establishing the fire retardancy of plastics. Its adoption facilitates international trade by providing a common standard for measuring the flammability of plastic materials
