1x7 15.24mm 2230 Mpa PC Strand

Structure: 7 wires, typically made of high-strength steel, twisted together in a helical arrangement.   Diameter of Strand, mm[in.] Tolerance of Dia. mm Minimum Breaking Strength of Strand, kN [lbf] Steel Area of Strand mm2 [in.2] Weight of Strand kg/1000m [lb/1000 ft] Min Load at 1% Extension, kN [lbf] Low-Relaxation Minimum Difference Between Center Wire Diameter and Diameter of Any Outer Wire, mm [in.] Elongation (%) The relaxation at 1000 h, Initial load to 70% of nominal max load (r/%) Low-Relaxation Grade 1860 [270] 15.24 [0.600] +0.65 -0.15 260.7 [58 600] 140.0 [0.217] 1102 [740] 234.6 [52 740] 0.1016 [0.004] 3.5 2.5                     Material: High-strength steel wires (usually carbon steel with special heat treatment) designed to offer superior tensile strength and flexibility. Type of Strand: This strand is a bare or uncoated strand, though it can also be galvanized or coated for additional protection against corros…