high tensile PC strand ASTM

high tensilePC strand ASTM Quick detail origin:China(mainland) Strand structure Diameter (mm) The most vigorous of steel strandFm/not less than Tensile Strength Grade/not less than (Mpa) Minimum Breaking Load(KN) Provision of non-proportional extension force/KN not less than Strand cross-sectional area reference Sn/mm2 Elogation%L0≥500mm 1000hRelaxation value1000hours notmore than Initialload//Grade 1x7 12.70mm 184 1860 209 166 98.7 3.5 80% 4.5% 15.20mm 260 300 234 140 3.5 70% 2.5% 17.80mm 353 380 318 191 3.5 60% 1.0%