DIAMETERS, WEIGHT & TOLERANCES |
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Nominal |
Nominal |
Tolerances |
Nominal |
Nominal |
Diameter |
cross section |
(%) |
Weight |
Weight |
(mm) |
(mm2) |
(kg/m) |
for 12m bar (Kg) |
|
8 | 50,3 | ±6 | 0.395 | 4.74 |
10 | 78,5 | ±4,5 | 0.617 | 7.404 |
12 | 113 | ±4,5 | 0.888 | 10.656 |
14 | 154 | ±4,5 | 1.21 | 14.52 |
16 | 201 | ±4,5 | 1.58 | 18.96 |
18 | 254 | ±4,5 | 2 | 24 |
20 | 314 | ±4,5 | 2.47 | 29.64 |
22 | 380 | ±4,5 | 2.98 | 35.76 |
25 | 491 | ±4,5 | 3.85 | 46.2 |
28 | 616 | ±4,5 | 4.83 | 57.96 |
32 | 804 | ±4,5 | 6.31 | 75.72 |
40 | 1.257 | ±4,5 | 9.86 | 118.32 |
Grade |
Yield StrengthRe MPa |
Tensile/yield strength ratioRm/Re |
Total elongation at maximum force, Agt % |
B500A | ≥500 | 1.05a | 2.5b |
B500B | ≥500 | 1.08 | 5.0 |
B500C | ≥500 | 1.15, < 1.35 | 7.5 |
a Rm/Rccharacteristic is 1.02 for sizes below 8 mm bAgt characteristic is 1.0% for sizes below 8 mm |
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The absolute maximum permissible value of yield strength is 650 MPa. |
The Carbon Equivalent can be calculated using the following formula
where
Mn is the percentage manganese content;
Cr is the percentage chromium content;
V is the percentage vanadium content;
Mo is the percentage molybdenum content;
Cu is the percentage copper content;
Ni is the percentage nickel content.
Chemical composition (maximum % by mass) |
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Carbona |
Sulphur |
Phosphorus |
Nitrogenb |
Copper |
Carbon equivalent
|
|
Cast Analysis |
0.22 |
0.05 |
0.05 |
0.012 |
0.8 |
0.5 |
Product Analysis |
0.24 |
0.055 |
0.055 |
0.014 |
0.85 |
0.52 |
a It is permitted to exceed the maximum values of carbon by 0.03 % by mass, provided that the carbon equivalent value is decreased by 0.02 % by mass. |
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b Higher nitrogen contents are permissible if sufficient quantities of nitrogen binding elements are present. |