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Table 1.1 Performance Requirements: Material (physical properties)
Property	Unit	Requirement
Impact resistance (Izod) - Class 1 compound	J/m	≥ 80.1
Impact resistance (Izod) - Class 2 compound	J/m	≥ 266.9
Tensile strength - Class 1 compound	MPa	≥ 44.9
Tensile strength - Class 2 compound	MPa	≥ 37.7
Modulus of elasticity - Class 1 compound	MPa	≥ 2 483
Modulus of elasticity - Class 2 compound	MPa	≥ 2 208
Heat deflection temperature - Class 1 compound	°C	≥ 70
Heat deflection temperature - Class 2 compound	°C	≥ 70
Thermal expansion coefficient	mm/mm °C	≤ 8.1 × 10 ⁻⁵
Flammability - extent of burning	mm	≤ 25
Flammability - time of burn	s	≤ 10

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