|
Diameter (mm) |
Mandrel Diameter (mm) |
Cross Sectional Area (mm2) |
Mass (kg/m) |
||
|
BS4449-1997 Requirement |
BS4449-1997 Requirement |
Typical Ex-Plant Test Result |
BS4449-1997 Requirement |
Typical Ex-Plant Test Result |
|
|
6 |
≤4d |
28.3 |
26.2 |
0.222±6 % |
0.223 |
|
7 |
38.5 |
34.7 |
0.302±6 % |
0.289 |
|
|
8 |
50.3 |
48.2 |
0.395±6 % |
0.411 |
|
|
9 |
63.6 |
60.6 |
0.499±4.5 % |
0.501 |
|
|
10 |
78.5 |
76.3 |
0.617±4.5 % |
0.653 |
|
|
12 |
113 |
111.3 |
0.888±4.5 % |
0.923 |
|
|
16 |
201 |
197.8 |
1.58±4.5 % |
1.62 |
|
|
20 |
≤7d |
314 |
311.5 |
2.47±4.5 % |
2.41 |
|
25 |
491 |
489.1 |
3.85±4.5 % |
3.7 |
|
|
32 |
804 |
800.6 |
6.31±4.5 % |
6.47 |
|
2.2 Chemical Analysis:
|
Specifications |
Carbon (%) |
Sulphur (%) |
Phosphorus (%) |
Nitrogen (%) |
Copper (%) |
Carbon Equivalent (%) |
|
BS4449-1997 Requirement |
≤0.22 |
≤0.05 |
≤0.05 |
≤0.012 |
≤0.8 |
≤0.5 |
|
Typical Ex-Plant Test Result |
0.012 |
0.011 |
0.023 |
0.007 |
0.65 |
0.42 |
2.3 Mechanical Properties:
|
Steel Grade |
Yield Strength Re (Mpa) |
Tensile/Yield Strength Ratio, Rm/Re |
Total Elongation at Maximum Force, Agt (%) |
Rib Height (h) |
Rib Spacing (c) |
Rib Inclination β (°) |
|
B500B |
500 |
≥1.08 |
≥5 |
0.03d≤h≤0.15d |
0.4d≤c≤1.2d |
35≤β≤75 |
|
Typical Ex-Plant Test Result |
545 |
1.12 |
7.9 |
0.05d |
0.8d |
45 |
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