l Structure: 3 / 7 / 19 wires
l Diameter:6.2, 6.5, 8.6, 8.74, 9.3, 9.53, 10.8, 11.1, 12.5, 12.7, 12.9, 15.2, 15.7, 17.8, 18.0, 21.6, 21.8mm
l Standards: ASTM A416-2006, ASTM A886-2002, ASTM A882-02a, ABNT NBR 7483:2008, BS5896-1980, NF A35-035-2001, IS6006-1983, JIS G3536-2008, GB/T5224-2003, JG3006, JG161-2004.
l Tensile Strength :over 1860MPa,
l Yield Strength :over 1670MPa.
l Relaxation:Initial load to 70% breaking load, the relaxation at 1000 hours less than 2.0%.
l Elongation:Lo over 610mm, the elongation over 4.0%
l Application:Pre-stressing steels apply to post-tensioned and pre-tensioned concrete structure in the follow civil engineering, building construction and infrastructure projects: bridges; railway sleeper, subway track board; airport; industrial buildings, commercial buildings, residential housing foundations; PC poles, piles, beams, girders, slabs, double-T board, hollow floor board, floor, parking decks, PHC, PPCP; electric power, nuclear power station; ports, dams, water project, sewage treatment, swimming pool; rock-coil anchoring, side slope stabilization, coil mine; storage tank for national gas, oil, grain; stadiums, TV tower etc.
l Packing:baling strip, inner PVC film, outer damp-proof paper-plastic compound packing cloth, wooden pallet pedestal,or according to customers'requirements.
Nominal Diameter (mm) | Nominal Tensile strength (MPa) | Nominal Area (mm2) | Min Breaking load (KN) | Load at 1% Elongation (KN) | Min. Elongation At max load Lo=200mm | Ductility tests | Relaxation | ||||
Reverse bends | Initial Load Actual Breaking load | 1000h Value No more than | |||||||||
Bend times (time/ 180°)
| Bend times (mm) | ||||||||||
Relax Class 1 | Relax Class 2 | ||||||||||
7 7 | 1570 1670 | 38.5 | 60.4 64.3 | 51.3 54.7 |
3.5% |
4 times for plain wires
3 times for indented wires | 20 |
60%
70%
80% |
4.5%
8%
12% |
1.0%
2.5%
4.5% | |
6 6 | 1670 1770 | 28.3 | 47.3 50.1 | 40.2 42.6 | 15 | ||||||
5 5 | 1670 1770 | 19.6 | 32.7 34.7 | 21.8 29.5 | 15 | ||||||
4.5 | 1620 | 15.9 | 25.8 | 21.9 | 15 | ||||||
4 4 | 1670 1670 | 12.6 | 21.3 22.3 | 17.9 19.0 | 10 | ||||||
