SGS · Flame-retardant coated material sourcing
The black FR PU-coated Oxford specimen achieved UL 94 VTM-0 at 0.50 mm. Third-party results let buyers check afterflame behaviour, flaming drops and conditioning, with specific evidence for screening flame-retardant coated materials.
A “flame-retardant” description alone is insufficient for material review. This SGS report records thickness, specimen count, two conditioning groups, afterflame and afterglow times, and whether flaming drops ignited a cotton indicator. Buyers can compare defined requirements with measured results instead of relying only on composition or a coating name.
The specimen was assigned VTM-0, a stringent classification within the UL 94 thin-material vertical burning series for afterflame, afterglow and dripping behaviour. It supplies checkable evidence under specified conditions. The project owner still needs to confirm the required classification and suitability for the final equipment.
All 10 specimens across both groups recorded t1, t2 and t3 as 0 s. t1 and t2 are afterflame times following the two flame applications; t3 is afterglow after the second application. Times were recorded to the nearest second. These are observations after removal of the test flame, not proof that the material cannot burn during flame exposure.
Neither group recorded afterflame or afterglow reaching the 125 mm mark, or cotton ignition from flaming particles or drops. These results support checking laboratory requirements for flame cessation and dripping; they do not establish a fire-risk-free complete assembly.
See pages 2–3 of AJFTS26007761R02_EN. Its VTM-0 criteria specify individual t1 and t2 ≤10 s, a five-specimen group total t1+t2 ≤50 s, t2+t3 after the second application ≤30 s, no progression to the mark and no cotton ignition. Page 1 gives the final VTM-0 classification.
At least 48 hours at 23±2°C and 50±10% relative humidity before testing.
168±2 hours in a circulating-air oven at 70±2°C, followed by at least four hours of cooling in a desiccator at room temperature.
Results in both states provide more complete material-screening evidence. The 70°C temperature is a test-conditioning parameter, not a certified continuous operating temperature. The report also supplies no results for wash-retained flame performance, long-term ageing, smoke density or toxicity. Define additional verification when the project requires these properties.
UL explicitly states that VTM-0 and V-0 use different methods and are not equivalent classifications.[1] The supported statement is “UL 94 VTM-0 at a tested thickness of 0.50 mm”; this report cannot be relabelled “UL 94 V-0”.
UL 94 addresses small-scale material burning under controlled conditions. An SGS test report does not replace UL product certification, garment flame-retardant certification, a building-material fire classification or approval of a complete duct system.[2] Requirements for V-0, construction use or a finished system need their own corresponding evidence.
State the equipment or material application, target market, standard edition and classification. Confirm that the buyer accepts VTM-0 rather than substituting a similarly named rating.
Check black colour, 600D polyester Oxford, FR PU coating, 324 g/m² and 0.50 mm, together with coating formulation, thickness control and the supplied batch. No item number is listed: the report is not automatic evidence for a current catalogue SKU.
Specify washing, repeated folding, abrasion, chemical contact or continuous high-temperature requirements separately. The heat conditioning in this test cannot replace those checks.
Check the R01 original, the R02 copied-results statement, complete results and sample identity. Then agree the approved sample, order specification, batch acceptance and any additional testing.
For duct construction, pressure and temperature selection, see the flexible duct fabric selection guide. That page covers equipment and processing; this page covers the material burning report.
Measured values come from pages 1–3 of SGS AJFTS26007761R02_EN, with the R01 original checked. The official sources below explain classifications and scope, not additional company certification.
Share the application, target rating, colour, thickness, use conditions and intended order specification so we can check sample directions and corresponding documents.
