China Plain Surface Prestressing Steel Wire, Find details about China PC Steel Wire, Steel Wire from Plain Surface Prestressing Steel Wire
The specifications and technical parameters | ||||||||
Nominal Dia (dn/mm) | Tolerance | Tensile Strength σb/MPA Not less than | Yield Stength (σp0.2/MPA) Not less than | Elongation at max load (Lo=200mm) δgt/% Not less than | Bending Times Not less than | Bending Radius R/mm | Relaxation Priperties | |
The relaxation at 1000h (initial load to 70% of nominal tensile strength ) (r%) Not more than | ||||||||
4.8 | ±0.05 | 1470 1570 1670 1770 1860 | 1290 1380 1470 1560 1640 | 3.5 | 4 | 15 | 2.0 | |
5.0 | ||||||||
6.0 | ±0.05 | 1470 1570 1670 1770 | 1290 1380 1470 1560 | 4 | 15 | |||
6.25 | ||||||||
7.0 | 20 | |||||||
8.0 | ±0.06 | 1470 1570 | 1290 1380 | 4 | 20 | |||
9.0 | 25 |