To izmanto dažādu veidu atsperu un režģu ražošanā.
| Material | Ct 55, Ct 70, sae 1030, sae 1069 |
| Tensile strength | from 1000 to 2200 N/mm |
| Wire diameter | from 0,8 to 5,0 mm |
| Coil weight | from 25 to 1000 kg |
| Packaging | In coils and rosettes, tightened with metal tape in 4 places |
