HRB335 HRB400 HRB500 ASTM A615 GR40 GR60 Carbon Steel Rebar
Carbon steel rebar mainly bears the tensile stress in concrete, and due to the effect of ribs, it has a greater bonding ability with concrete. Widely used in housing, bridges, roads and other infrastructure and important energy, transportation and other e
Product 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. | ||
◆ Application
Hot-rolled ribbed steel bars, commonly known as rebar, usually have 2 longitudinal ribs and transverse ribs evenly distributed along the length. There are three shapes of transverse ribs: spiral, herringbone, and crescent. The current Chinese standard stipulates that it is crescent.
The carbon steel rebar mainly bears the tensile stress in the concrete, and due to the effect of the rib, it has a large bonding capacity with the concrete.
As an important steel for reinforced concrete, carbon steel rebar is an indispensable structural material.Widely used in housing, bridges, roads and other infrastructure and important energy, transportation and other engineering projects.As large as public facilities such as roads, railways, bridges, culverts, tunnels, flood control, and dams; as small as foundations, beams, columns, walls, and building panels.
Carbon steel rebar HRB335, HRB400 and HRB500 are all produced in accordance with the Chinese standard GB/T 1499.2-2018 "Steel for Reinforced Concrete Part 2: Hot Rolled Ribbed Steel Bars".
Rebar standard: ASTM A615/A615M.Steel type: Gr40, Gr60.For export, ASTM A615 GR 40 and ASTM A615 GR 60 carbon steel rebars are available in cut lengths ranging from 6-12 meters.American standard rebar is divided into Gr 40 (280MPa grade steel bar) and Gr 60 (420MPa grade steel bar) according to strength grade.
◆ Dimensions, weight and tolerances
The nominal cross-sectional area and theoretical weight of carbon steel rebar are listed in the table:
Nominal Diameter mm | Nominal cross-sectional area mm2 | Theoretical Weighta kg/m |
| 6 | 28.27 | 0.222 |
| 8 | 50.27 | 0.395 |
| 10 | 78.54 | 0.617 |
| 12 | 113.1 | 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 |
| a The theoretical weight is calculated based on the density of 7.85g/cm3. | ||
The allowable deviation between the actual weight and theoretical weight of carbon steel rebar is shown in the table:
Nominal Diameter mm | Deviation between actual weight and theoretical weight % |
| 6~12 | ±6.0 |
| 14~20 | ±5.0 |
| 22~50 | ±4.0 |
◆ Purchasing Information
| Product name | Carbon Steel Rebar |
| Grade | HRB335, HRB400, HRB500, ASTM A615 GR 40, ASTM A615 GR 60 |
| Diameter | 6mm~40mm or customized |
| Length | 5m-14m , 5.8m , 6m , 10m-12m , 12m or customized |
| MOQ | 1 ton |
| Supply Ability | 5000 tons / month |
| Lead Time | 10-15 working days after the receipt of 30% deposit |
| Payment Terms | 30%T/T Advance + 70% Balance |
| Price Terms | FOB, CFR, CIF, EXW |
| Packing | Bundle, orwith all kinds of colors PVC oras your requirements |
| *If you do not find what you are
looking for, please call us now. If you have found it, we are happy to
answer any questions or concerns you may have about carbon steel
rebar grades and assist you through the purchasing process. | |
◆ FAQ
Q:Can you send samples?
A:Sample can be for free,freight cost collect.
Q:What product information do I need to provide?
A:Steel grade/thickness/width/quantity,these will decide the price.
Q:About product prices?
A:Prices vary from period to period due to cyclical changes in the price of raw materials.
Q:What are the certifications for your products?
A:We have ISO 9001,CE,SGS,BV and other certifications.
Q:How about the delivery time?
A:Regularly the delivery time around 10-15 days,customized one will inform the delivery time ahead.
Q:Does the product have quality inspection before loading?
A:All the products are strictly tested before packaging,also can inspect by third party inspection.
Q:How to pack the products?
A:Standard export package with waterproof film and wooden pallet.It can effectively protect products from corrosion.
