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TOLERANCE (Empire products)	REFERENCE STANDARD	PARAMETER
±0.2 % According to the size	ISO 10545-2	LENGTH AND WIDTH
±3 %	ISO 10545-2	THICKNESS
±0.3 %	ISO 10545-2	RECTANGULARITY
±0.3 %	ISO 10545-2	STRAIGHTNESS OF SIDES
±0.3 %	ISO 10545-2	SURFACE FLATNESS
Average≤0.5 %	ISO 10545-3	WATER ABSORPTION (Weight Percent)
Min. 35	ISO 10545-4	MODULUS OF RUPTURE (N/mm2) (BENDING STRENGTH)
Min. 1500	ISO 10545-4	BREAKING STRENGHT (N)
Min. Class 2	ISO 10545-7	ABRASION RESISTANCE
In compliance with the requirements of ISO 10545-9	ISO 10545-9	THERMAL SHOCK RESISTANCE
Max. 8.4 x 10-6 (1/oC)	ISO 10545-8	THERMAL EXPANSION COEFFICIENT (From room temperature to 400 oC)
In compliance with the requirements of ISO 10545-11	ISO 10545-11	CRAZING RESISTANCE
In compliance with the requirements of ISO 10545-12	ISO 10545-12	FROST RESISTANCE
Class 3	ISO 10545-14	STAIN RESISTANCE
Class GA	ISO 10545-13	CHEMICAL RESISTANCE
Min. II	ISO 10545-17	FRICTION COEFFICIENT