Product Description
Carbon steel round bar is a solid long steel bar with a circular cross-section. Its specifications are expressed in diameter in millimeters (mm). The calculation formula of theoretical weight of round steel: outer diameter Х outer diameter Х0.00617=kg/m. Round bars are divided into three types: hot rolled round bars, forged round bars and cold drawn round bars according to the process section. According to the chemical composition (ie carbon content), it can be divided into low carbon steel round steel, medium carbon steel round steel and high carbon steel round steel. According to the quality of steel, it can be divided into ordinary carbon steel round steel and high-quality carbon steel round steel. According to the use, it can be divided into carbon structural steel and carbon tool steel.
Steel Number | Chemical Composition, % | σs, MPa ≥ | ||||
C | Mn | Si | S | P | ||
08F | 0.05-0.11 | 0.25-0.50 | ≤0.03 | <0.035 | <0.035 | 175 |
10 | 0.07-0.13 | 0.35-0.65 | 0.17-0.37 | <0.035 | <0.035 | 205 |
20 | 0.17-0.23 | 0.35-0.65 | 0.17-0.37 | <0.035 | <0.035 | 245 |
35 | 0.32-0.39 | 0.50-0.80 | 0.17-0.37 | <0.035 | <0.035 | 315 |
40 | 0.37-0.44 | 0.50-0.80 | 0.17-0.37 | <0.035 | <0.035 | 335 |
45 | 0.42-0.50 | 0.50-0.80 | 0.17-0.37 | <0.035 | <0.035 | 355 |
50 | 0.47-0.55 | 0.50-0.80 | 0.17-0.37 | <0.035 | <0.035 | 375 |
60 | 0.57-0.65 | 0.50-0.80 | 0.17-0.37 | <0.035 | <0.035 | 400 |
65 | 0.62-0.70 | 0.50-0.80 | 0.17-0.37 | <0.035 | <0.035 | 420 |
The difference between round steel and other steel bars
1. The appearance is different, the round steel has a smooth appearance, no texture and no ribs, and other steel bars have engraved or ribbed surface appearance, which causes the bonding force between the round steel and the concrete to be small, while the other steel bars and the concrete have less adhesion. Great adhesion.
2. The composition is different. Round steel (grade 1 steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel.
3. The strength is different, the strength of the round steel is low, and the strength of other steels is high, that is, the round steel with the same diameter can withstand less tensile force than other steel bars, but the plasticity of the round steel is higher than that of other steel bars. Strong, that is, the round steel has a large deformation before being broken, while the deformation of other steel bars is much smaller before being broken.
FAQ：
Q: What products does your company have?
A: Our company produces all kinds of carbon steel plates, carbon steel coils, carbon steel pipes, carbon steel rods, carbon steel rebars, I-beams, H-beams, flat steels, channel steels, steel sheet piles, steel strands, etc. Rich production experience, support customization.
Q: What are the advantages of your company?
A: (1): Prime quality and Competitive price.
(2): Excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Samples can be provided as your requirements.
Q: What is your terms of payment ?
A: Can be negotiated by both parties. If you have another question, pls feel free to contact us as below.
Q: How long is your delivery time?
A: Stock steel/Steel for simple cutting/Small amount of general standard steel: about 5-20 days for delivery; Custom steel/bulk steel: about 15-30 days for delivery. Contact us for specific delivery times.
