1370/1770 (traction)
1570/1770 (extra high strength)
680/1270 (iron)
Dual tensile, outer wires: 1370 N/mm², inner wires 1770 N/mm².
Dual tensile, outer wires: 1570 N/mm², inner wires 1770 N/mm².
Dual tensile, outer wires: 680 N/mm², inner wires 1270 N/mm².