| 摘要 |
A method of producing steel strapping comprising: (i) casting a steel of given compsn.; (ii) hot rolling the steel to strip form; (iii) cold rolling the strip to strapping gauge; (iv) slitting the cold-rolled strip to strapping width; and (v) austempering the steel before or after slitting to strapping width. The compsn. of the steel comprises by wt. 0.25-0.34% C, 1.20-1.55% Mn and up to 0.035% Si modified by the addn. of one of (a) 0.2-0.25% V, (b) 0.35-0.45% Mo or (c) 0.35-0.45% Mo + 0.12-0.18% V. Also claimed is steel strapping made by the above method, the steel having a non-equilibrium microstructure of fine spheroidised carbides in ferrite. |
