WHRB335 HRB400 HRB500 ASTM A615 GR40 GR60 Carbon Steel Rebar
introduction
◆ Properties
| Chemical properties of carbon steel rebar | ||||||
| Grade | C | Si | Mn | P | S | carbon equivalent Ceq % |
HRB335 | ≤0.25 | ≤0.80 | ≤1.60 | ≤0.045 | ≤0.045 | ≤0.52 |
HRB400 | ≤0.25 | ≤0.80 | ≤1.60 | ≤0.045 | ≤0.045 | ≤0.54 |
HRB500 | ≤0.25 | ≤0.80 | ≤1.60 | ≤0.045 | ≤0.045 | ≤0.55 |
ASTM A615 GR 40 | ≤0.33 | ≤0.55 | ≤1.50 | ≤0.045 | ≤0.045 | |
ASTM A615 GR 60 | 0.38~0.45 | 0.20~0.40 | 1.20~1.60 | ≤0.045 | ≤0.045 | |
| Mechanical properties of carbon steel rebar | ||||
| Grade | Lower Yield Strength ReL MPa | Tensile Strength Rm MPa | Elongation after break A % | Total Elongation at maximum force Agt % |
HRB335 | ≥335 | ≥455 | ≥17 | ≥7.5 |
HRB400 | ≥400 | ≥540 | ≥16 | ≥7.5 |
HRB500 | ≥500 | ≥630 | ≥15 | ≥7.5 |
| Mechanical properties of ASTM A615 carbon steel rebar | ||||
| Grade | Yield Strength / MPa | Tensile Strength / MPa | Elongation / % | |
ASTM A615 GR 40 | ≥280 | ≥420 | 3#[10] | ≥11 |
| 4#[13]-6#[19] | ≥12 | |||
ASTM A615 GR 60 | ≥420 | ≥620 | 3#~6# | ≥9 |
| 7#~8# | ≥8 | |||
| 9#~12# | ≥7 | |||
| Bending properties of carbon steel rebar | ||
| Grade | Nominal diameter d(mm) | Bending head diameter |
HRB335 | 6~25 | 3d |
| 28~40 | 4d | |
| ＞40~50 | 5d | |
| HRB400 | 6~25 | 4d |
| 28~40 | 5d | |
| ＞40~50 | 6d | |
HRB500 | 6~25 | 6d |
| 28~40 | 7d | |
| ＞40~50 | 8d | |
| Carbon steel rebars shall be subjected to a bending test. After bending 180° with the diameter of the bending indenter, the bent surface of the carbon steel rebar must not produce cracks. | ||
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