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GB1499-1998 Grade and Chemical Composition |
Grade |
Chemical Composition
|
|
C |
Si |
Mn |
P |
S |
Ceq |
HRB335 |
0.17-0.25 |
0.4-0.80 |
1.20-1.60 |
≤0.045 |
≤0.045 |
≤0.52 |
HRB400 |
0.17-0.25 |
0.2-0.80 |
1.20-1.60 |
≤0.045 |
≤0.045 |
≤0.54 |
HRB500 |
≤0.25 |
≤0.8 |
≤1.6 |
≤0.045 |
≤0.045 |
≤0.55 |
Mechanical properties
Grade
|
Nominal diametre
|
os,MPa |
ob,MPa |
5,%
|
|
≤ |
HRB335 |
6-25 28-50 |
335 |
490 |
16 |
HRB400 |
6-25 28-50 |
400 |
570 |
14 |
HRB500 |
6-25 28-50 |
500 |
630 |
12 |
Comparison Table for area and weight of deformed steel bar
Nominal diametre,mm |
Nominal area ,mm2 |
Weight,kg/m |
6 |
28.27 |
0.222 |
8 |
50.27 |
0.395 |
10 |
78.54 |
0.617 |
12 |
133.1 |
0.888 |
14 |
153.9 |
1.21 |
16 |
201.1 |
1.58 |
18 |
254.5 |
2.00 |
20 |
314.2 |
2.47 |
22 |
380.1 |
2.98 |
25 |
490.9 |
3.85 |
28 |
615.8 |
4.83 |
32 |
804.2 |
6.31 |
36 |
1018 |
7.99 |
40 |
1257 |
9.87 |
50 |
1964 |
15.42 |
Density=7.85g/cm3 |
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