The specific calorific value (Hi) indicates how much energy is released in case of the complete combustion of a material. In general the calorific value is indicated in MJ/kg or kWh/kg.
Approximate values for calorific value:
| FEP, ETFE, PFA: | approx. 1-2 kWh/kg |
| SABIX® (PO-Basis): | approx. 3-5 kWh/kg |
| Besilen®: | approx. 4-5 kWh/kg |
| PVC: | approx. 5-7 kWh/kg |
| PUR: | approx. 7-9 kWh/kg |
| PE/PP: | > 12 kWh/kg |