CARBON SPRING STEEL WIRE FOR NON-MECHANICAL SPRING

CARBON SPRING STEEL WIRE FOR NON-MECHANICAL SPRINGYB/T5220-1993　 Round cold-drawing carbon spring steel wire for non-mechanical spring of furniture,autom obile seat and cushion,and indoor decoration etc.Diameter Tolerance of Steel Wire Diameter of steel wire (mm)Grade toleranceh10h11h12Tolerance (mm)0.20-0.30±0.01±0.01±0.02>0.30-0.60±0.01±0.02±0.03>0.60-1.00±0.01±0.02±0.03>1.00-3.00±0.01±0.03±0.05Tensile Strength of Steel WireGradeTensile strength （MPa)GradeTensile strength（MPa)A11180-1380A41780-1980A21380-1580A51980-2180A31580-1780A62180-2380