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Durostone® UPM S13 LST

Durostone® UPM S13 LST is a fiber-reinforced plastic with an exceptionally good behavior in fire. The flammability of plastics attains a particular value of FVO /> 1mm. Convinced by this plastic has a low toxicity and low smoke density, making this one of our Durostone specials. Moreover Durostone® UPM S13 LST meets requirement R11, hazard level HL3, for arc resistant insulation materials of EN 45545-2:2013.



Standard sizes


Type acc. to standard (EN 60893)

UP GM 203

Thermal endurance (IEC 216)


Technical ValuesTest methodUnitUPM S13 LST
Fibre reinforcement--mat
Specific gravity-g/cm32,10
Standard colour--white
Previous quality---
DIN 7735 type---
EN 60893/IEC 893 type--UPGM 203+
Nema-LI.1 designation--GPO3+
NFC 26153/26151 StandardISO 1183 meth 1g/cm3-
Bending strength (perpendicular)ISO 178MPa160
Modulus of elasticity (perpendicular)ISO 178MPa16000
Compressive Strength (perpendicular)ISO 604MPa250
Impact strength (parallel)ISO 179kJ/m2100
Tensile strength (parallel)ISO 527MPa80
Electric strength at 90°C (perpendicular)IEC 60243kV/mm-
Breakdown voltage at 90°C (parallel)IEC 60243kV/25mm-
Comparative tracking indexIEC 60112CTI600
Tracking and erosion resistanceIEC 60587 meth 1--
Thermal conductivityISO 8302W/mK0,3
Thermal enduranceIEC 60216T.I.-
Insulating classIEC 60085--
FlammabilityIEC 60707-FVO/>1mm
Coefficient of linear expansion (parallel)-10-6K-115-30

Remarks: Property variation possible in the area of 50mm, average - not guaranteed technical values. Tol. accord with EN 60893-3-5. The data mentioned are average values. We cannot accept any responsibility for their accuracy.

Product programme

Our range of Durostone® FRP-sheets:


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Rainer Sanders
General Manager Sales & Marketing


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