Steel wire

coilfor springscold-rolled

High-stremgth flat wire for press winding Applied grade 65Mn; 82A Delivery state cold rolling; cold rolling-tempering; low relaxation Application for the winding of frame, cylinder body and cross beam of large hydraulic press, and the winding of prestress vessel and bearing structures. Executive standard: Enterprise standard. American stamdard ASTM A905-2004 teel wire for pressure vessel winding. Major technical index: 1: Strength: 1620MPa-1820MPa; 1380MPa-1580MPa. 2.: Elongation after rupturee(gauge length100mm): 2.5%-3.5%. 3: Dimensional tolerance: (1.5+/- 0.03)mmX(5.0+/-0.06)mm or(1.5+/-0.03)mmX(6.0+/-0.08)mm. 4: Stress relaxation performance: when the initial stess is equivalent to 50% of nominal tensile strength, 1000h stress relaxation rate r<2.0%. 5: The maximum reel weight is 2.5t, and no joint is allowed. Features: Adopting high-quality spring steel material, and has the features of large coil weight, high-strength, good toughness, low relaxation and long fatigue life.