ASTM D5048 – Burning of Plastics Using 125-mm Flame

Standard: ASTM D5048 Standard Test Method for Measuring the Comparative Burning Characteristics and Resistance to Burn-Through of Solid Plastics Using a 125-mm Flame

Scope: Per ASTM D5048: "This fire-test-response standard contains a test method for small-scale laboratory procedures to be used to determine the relative burning characteristics and the resistance to burn-through of plastics using small bar and plaque specimens exposed to a 125-mm (500-W nominal) flame."

Products: Plastics

Procedure: Per ASTM D5048: "Sets of 13 ± 0.5 mm by 125 ± 5 mm bar specimens and 150 ± 5 mm by 150 ± 5 mm plaque specimens are subjected to a 125 mm flame with a 40 ± 2 mm inner blue cone, for five 5-second flame applications. The afterflame plus afterglow time for the bar specimen is recorded after removal of the fifth flame application. Information is recorded on whether or not flaming material drips from the specimens, and whether or not the plaque specimens exhibit burn-through."

Result: Test results such as duration of afterflame or afterglow may be reported. Materials may also be classified as 5VA or 5VB, as described in Appendix X1 of ASTM D5048.

Technical Equivalent: IEC 60695-11-20