... .Tensile strength:35-55k 3.Elongation rate:10%-25% 4.Factory price black annealed iron wire 1. material: high quality low carbon steel ... :35-55kg/mm2 3)Elongation rate:10%-25% 4)Coil weight: 1-500kg/coil3.characteristic: softness, strong flexility and plasticity,can be ... in construction, handcraft,weaving wire mesh,binding wire ,loop wire and cut wire,etc.5.packing:1-500kg/coil, inner plastic ...