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Defofmed(Round)Prestressed Concrete Steel Bar |
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Mechanical & Technological properties
Upon the request, it is possible to produce higher grade of steel than the grade 1275/1420
Nominal Dia. (mm) |
Yield Load(min.) KN (Kgf) |
Yield Strength(min.) KN/㎟ (Kgf/㎟) |
Tensile Load(min.) KN (Kgf) |
Tensile Strength(min.) KN (Kgf/㎟) |
Elongation min. % |
Relaxation max. |
1) %, 10hrs. |
2) %, 1000hrs. |
5.1 |
26.3
(2680) |
1.3
(130) |
28.0
(2850) |
1.4
(145) |
5 |
1.5 |
4.0 |
6.1 |
37.9
(3860) |
40.2
(4100) |
7.4 |
53.4
(5450) |
56.9
(5800) |
8.3 |
70.1
(7150) |
74.7
(7615) |
9.2 |
84.8
(8650) |
91.0
(9280) |
11.0 |
118.7
(12100) |
128.0
(13050) |
13.0 |
164.8
(16800) |
177.8
(18125) |
- Gauge length : nominal diameter x 8
- Relaxation value : Initial load =
1) 80% of yield load at normal temperature.
2) 70% of tensile load at normal temperature.
Dimensions
Nominal Dia. (mm) |
Basic Dia. (mm) |
Tolerance (mm) |
Nominal sec. area (㎟) |
Nominal weight (kg/m) |
Coil inner dia(m) |
5.1 |
5.10 |
±0.05 |
19.64 |
0.154 |
2.0 |
6.1 |
6.10 |
28.27 |
0.222 |
2.0 |
7.4 |
7.25 |
40.00 |
0.315 |
2.0 |
8.3 |
8.33 |
52.50 |
0.412 |
2.0 |
9.2 |
9.25 |
64.00 |
0.500 |
2.0 |
11.0 |
11.10 |
90.00 |
0.710 |
2.0 |
13.0 |
13.10 |
125.00 |
0.980 |
2.0 |
- Weight units is derived from taking density as 7.85g/㎤
Chemical Composition
P (%) |
S (%) |
Cu (%) |
0.03 Max. |
0.035 Max. |
0.30 Max. |
Dimensions of button heads & rolled threads
PC BAR can be directly warm headed and threaded without preliminary surface machining.
Nominal Dia. (mm) |
Basic Dia. D (mm) |
Button head(mm) |
Rolled Thread(mm) |
Outer Dia. D |
Thickness H |
Outer Dia. |
Pitch |
5.1 |
5.10 |
9.0-10.0 |
4.5-5.5 |
M 6 |
0.75 |
6.1 |
6.10 |
9.5-11.5 |
5.5-6.5 |
M 7 |
0.75 |
7.4 |
7.25 |
13.5-14.5 |
6.5-8.0 |
M 8 |
1.00 |
8.3 |
8.33 |
14.5-15.5 |
6.7-8.2 |
M 9 |
1.00 |
9.2 |
9.25 |
16.0-17.5 |
7.0-8.5 |
M 10 |
1.25 |
11.0 |
11.10 |
18.5-20.0 |
8.5-10.0 |
M 12 |
1.50 |
13.0 |
13.10 |
21.5-23.0 |
9.5-11.0 |
M 14 |
1.50 |
Applications
- Pole
- Pile
- Sprial Hoop
- Sleeper
- Box Curlvart
- Anchor
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