The standard of Spiral PC Wire:
1.GB/T 5223-2002
2.BS 5896-1980
3.ASTM A421
4.ASTM A648
We can supply 2 sides, 3 sides and 4 sides low relaxation indented PC steel wire
A 421/A 421M-05
Tensile Strength Requirements
Nominal Diameter,mm (in) |
Tensile Strength,min,Mpa(psi) |
|
Type BA |
Type WA |
|
4.88(0.192) |
|
1725(250 000) |
4.98(0.196) |
1655(240 000) |
1725(250 000) |
6.35(0.250) |
1655(240 000) |
1655(240 000) |
7.01(0.276) |
1620(235 000) |
1620(235 000) |
Yield Strength Requirements
Nominal Diameter,mm (in) |
Intial Stress MPa(psi) |
Minimum Stress at 1% Extension,MPa(psi) |
|
Type BA |
Type WA |
||
4.88(0.192) |
200(29 000) |
|
1465(212 500) |
4.98(0.196) |
200(29 000) |
1407(204 000) |
1465(212 500) |
6.35(0.250) |
200(29 000) |
1407(204 000) |
1407(204 000) |
7.01(0.276) |
200(29 000) |
1377(199 750) |
1377(199 750) |
BS5896-1980
Diameter and deviation mm |
Nominal size m |
Nominal Weight g/m |
Minimum breaking load KN |
Nominal tensile strength Mpa |
4.0±0.04 4.5±0.05 5.0±0.05 6.0±0.05 7.0±0.05
|
12.60
15.90
19.60
28.30
38.50 |
99.9
125
154
222
302 |
21.0 22.3 25.8 32.7 34.7 47.3 50.1 60.4 64.3 |
1670 1770 1620 1670 1770 1670 1770 1570 1670 |
0.1% Test load KN |
0.1% Nominal stress test Mpa |
0.1% elongation when the load KN |
The number of repeatedbending |
Elongation Lo=200MM% |
1000 hours of relaxation rate % |
17.5 18.5 21.4 27.2 28.8 39.3 41.6 50.1 53.4 |
1390 1470 1350 1390 1470 1300 1390 |
17.9 19.0 21.9 27.8 29.5 40.2 42.6 51.3 54.7 |
Smooth wire
≥4 Nick wire ≥3 |
≥3.5 ≥3.5 ≥3.5 ≥3.5 ≥3.5 |
≤2.5 ≤2.5 ≤2.5 ≤2.5 ≤2.5 |