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Durostone® EPM 203

Durostone® EPM 203 is a fiber-reinforced plastic for mechanical and electrical applications. This epoxy-resin plastic offers high mechanical strength at elevated temperature. The fiber reinforcement is carried out with a glass mat (GRP).


Standard sizes


Type acc. to standard (EN 60893)

EP GM 203

Thermal endurance (IEC 216)


Technical ValuesTest methodUnitEPM 203
Fibre reinforcement--Mat
Specific gravity-g/cm31,85
Standard colour--yellow
Previous quality--EPM-W
DIN 7735 type---
EN 60893/IEC 893 type--EPGM 203
Nema-LI.1 designation---
NFC 26153/26151 StandardISO 1183 meth 1g/cm3VmEM2
Bending strength (perpendicular)ISO 178MPa360
Modulus of elasticity (perpendicular)ISO 178MPa20000
Compressive Strength (perpendicular)ISO 604MPa500
Impact strength (parallel)ISO 179kJ/m2100
Tensile strength (parallel)ISO 527MPa280
Electric strength at 90°C (perpendicular)IEC 60243kV/mm13
Breakdown voltage at 90°C (parallel)IEC 60243kV/25mm70
Comparative tracking indexIEC 60112CTI400
Tracking and erosion resistanceIEC 60587 meth 1--
Thermal conductivityISO 8302W/mK0,35
Thermal enduranceIEC 60216T.I.180
Insulating classIEC 60085-H
FlammabilityIEC 60707--
Coefficient of linear expansion (parallel)-10-6K-110-20

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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