| 인화성 등급 |
| 분류 |
검사 규칙 |
| HB |
Test specimen thickness 3 ~ 13 mm ; burning rate < 40 mm/min
Test specimen thickness < 3 mm ; burning rate < 75 mm/min |
| V2 |
Burning stops within 60 seconds after two applications of ten seconds each
of a flame to a test bar. Flaming drips are allowed |
| V1 |
Burning stops within 60 seconds after two applications of ten seconds each
of a flame to a test bar. NO flaming drips are allowed |
| V0 |
Burning stops within 30 seconds after two applications of ten seconds each
of a flame to a test bar. NO flaming drips are allowed |
| Other classification |
| 5VB |
Burning stops within 60 seconds after five applications of five seconds each
of a flame to a test bar. Test specimens may have a burn-through |
| 5VA |
Burning stops within 60 seconds after five applications of five seconds each
of a flame to a test bar. Test specimens may not have a burn-through |
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