Fire class
Information on fire classes and flammability tests.
Fibreglass – fire classes and flammability tests.
When selecting GRP products (glass fiber reinforced plastic), fire safety is an important factor, especially in public, industrial, and infrastructure environments. GRP products can be manufactured with different resin systems and additives to meet flame retardancy and fire protection requirements according to relevant standards. Flammability tests are carried out on GRP profiles to evaluate the material’s fire performance, such as flame spread, smoke development, and afterglow. Test results can be classified according to standards such as DIN, EN, or ASTM, depending on the project’s requirements.
It is important that the fire classification is coordinated with the specific application, as different environments and regulations may require different levels of fire protection.
| Standard | Test method | Country of use | Result of the test |
|---|---|---|---|
| ÖNORM B 3800 | B1 test/ phenolic resin |
A | B1 Tr1 Q1 |
| UNIFER E 10.02.977 | UNI 9177 classification |
CH, I | 2A |
| UNIFER E 10.02.977 | UNI 9174 burning heat FT |
CH, I | 2A |
| UNIFER E 10.02.977 | UNI 8457 KI FT | CH, I | 2A |
| UNIFER E 10.02.977 | ISO 5660-1 heating energy |
CH, I | see test report |
| UNIFER E 10.02.977 | EN ISO 1716 heating value |
CH, I | 7639 J/g |
| DIN 53 438, part 2 | 5 mm | D | K 1/5 mm |
| DIN 54837 | DIN 55 10 T2 | D | S4 SR2 ST2 |
| DIN EN 13501 -1 | DIN EN ISO 9239 -1 |
D EU | 9.9 kW/m2 / 195% min |
| DIN EN 13501 -1 | DIN EN ISO 11925-2 |
D EU | standards fulfilled |
| DIN EN 13501 -1 | (≈DIN 4102-B1) | D EU | Bfl -s1 |
| NFF16 -101 | NF X 70 -100 toxicity |
F | F1/I.T.C. value: 2,3 |
| NFF16 -101 | NF X 10 -702 smoke |
F | F1/I.T.C. value: 2.3 |
| NFF16 -101 | NF P 92-501 fire | F | M 2 |
| BS 476: Part 7: 1997 | 8 mm | GB | class 2 |
| BS 476: Part 7: 1997 | 3 mm (1/8 in.) | GB | class 2 |
| UIC 564-2: 1994 | Annex 4 | H | fire C / smoke A |
| NFPA 130 | ASTM E 662 smoke density |
USA | see test report |
| NFPA 130 | ASTM E 162 flame spread |
USA | Is = 9.7 |
| NFPA 255 | ASTM E-84-98 | USA | < 25, class A |
| Code 95/28/EC: 1995 | automobile code, burning speed 95/28/EC: 1995 |
EU | standards fulfilled |
| EN ISO 11925-2: 2002 | CEN/TS 45545-2: 2009 ignition |
EU | standards fulfilled |
| ISO 5660-1: 2002 | CEN/TS 45545-2: 2009 heat release |
EU | MAHRE 50,7 kW/m2 |
| ISO 5658-2: 2006 | CEN/TS 45545-2: 2009 flame spread |
EU | CFE > 20 kW/m2 Qsb 8,13 MJ/m2 |
| ISO 5659-2: 2007 | CEN/TS 45545-2: 2009 smoke toxicity |
EU | Ds (4) 89 VOF 4 95 CIT 4 min 0,01 CIT 8 min 0,02 |
| ISO 4589-2 | oxygen index by RT |
EU | LOI 36,2% |
| DIN EN 60695-11-10 | vertical test UL94 V |
EU | V 0 |
| EN 45545 | EN 45545-2:2013 | EU | HL 1-3 |
| EN ISO 5659-2:2012 | EN 45545-2:2013 | EU | 25bW/m², Ds max 109 |
| NF X 70-100-1:2006 | EN 45545-2:2013 | EU | T12, CITNLP 0,03 |
| DIN EN ISO 4589-2:2006 | EN 45545-2:2013 | EU | LOI 36 |
| DIN EN 13823:2010 | DIN EN 13501-1:2010 | EU | B, s1, d0 |
Properties and possibilities of GRP for fire requirements
- Self-extinguishing material options – reduce the spread of fire
- Halogen-free options – for environments with low smoke requirements
- Additives for increased flame and ember resistance
- Specialty resins (e.g. phenolic resin or fire-retardant polyester) for high demands
- Customization to fire standards and project specifications
