... profile qualityTest itemsStandardTest itemsStandardHardness,HRR≥85Veka softening point,≥83Tensile strength,MPa≥37Status after heatingNo bubbles, cracks. SmoothElongation at break,%≥ ... 100Dimension changeafter heating,%±2.5Bending elasticity modulus, MPa≥1960Oxgen index,%≥38Low temperature drop weight impact test≤1High- ... ''FCL: 23 tons Cross-section Drawing for 80 series sliding window: