A572/S355JR Round Steel Bar Description
A572 steel bar is made of a low-carbon, low-alloy high-strength steel employing the electric furnace steelmaking technology. So the main component is scrap iron. Resulting from its reasonable composition design and strict process control, A572 steel bar is widely favored for high purity and excellent performance. Its molten steel pouring manufacturing method not only gives the steel coil good density and uniformity, but also ensures that the steel bar has superior mechanical properties after cooling. A572 carbon steel bar is widely used in construction, bridges, heavy machinery and other fields. At the same time, it shows outstanding performance in welding, forming and corrosion resistance with its low carbon and low alloy characteristics.
Product Parameters
| Product Name | A572/S355JR Round Steel Bar | |||
| Standard | EN/DIN/JIS/ASTM/BS/ASME/AISI, etc. | |||
| Common Round Bar Specifications | 3.0-50.8 mm, Over 50.8-300mm | |||
| Flat Steel Common Specifications | 6.35×12.7mm, 6.35×25.4mm, 12.7×25.4mm | |||
| Hexagon Bar Common Specifications | AF5.8mm-17mm | |||
| Square Bar Common Specifications | AF2mm-14mm, AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm | |||
| Length | 1-6meters, Size Accept Custom | |||
| Diameter(mm) | Hot Rolling Round Bar | 25-600 | Cold Rolling Square Bar | 6-50.8 |
| Hot Rolling Square Bar | 21-54 | Cold Rolling Hexagon Bar | 9.5-65 | |
| Cold Rolling Round bar | 6-101.6 | Forged Rebar | 200-1000 | |
| Surface Process | Bright, Polished, Black | |||
| Other Services | Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. | |||
Chemical Composition
| A572 | C | Mn | P | S | Si |
| Grade 42 | 0.21 | 1.35 | 0.03 | 0.03 | 0.15-0.4 |
| Grade 50 | 0.23 | 1.35 | 0.03 | 0.03 | 0.15-0.4 |
| Grade 60 | 0.26 | 1.35 | 0.03 | 0.03 | 0.40 |
| Grade 65 | 0.23-0.26 | 1.35-1.65 | 0.03 | 0.03 | 0.40 |
Mechanical Properties
| A572 | Yield Strength (Ksi) | Tensile Strength (Ksi) | Elongation % 8 inches |
| Grade 42 | 42 | 60 | 20 |
| Grade 50 | 50 | 65 | 18 |
| Grade 60 | 60 | 75 | 16 |
| Grade 65 | 65 | 80 | 15 |
Physical Performance
| Physical Performance | Metric | Imperial |
| Density | 7.80 g/cc | 0.282 lb/in³ |
Scope of Application
ASTM A572 carbon steel low-alloy steel is widely used as bridge panels, support plates, mechanical mounting plates, etc. for construction equipment, transmission towers, racks and other equipment.
Equivalent Material
| EU | German Standard | Japanese Standard | French Standard | British Standard | Canada | Italy | Spain | National Standard | International | Portugal | India |
| EN | DIN,WNr | JIS | AFNOR | BS | HG | UNI | UNE | GB | ISO | NP | IS |
| S355JR | St52-3 | SM490A | E36-2 | 50B | 350W | Fe510B | AE355B | Q345B | E355C | FE510-B | IS961 |
factory display
Stock Display
Inspection and Packaging
If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.
FAQ
Q: What is your company's main products/services?
A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.
Q: Can I go to your factory for a visit?
A: Of course, we welcome customers from all over the world to visit our factory.
Q: What are your terms of payment?
A: 30% T/T deposite and 70% balance before shipment.
Q: What is your delivery time?
A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.
Q: Do you provide samples? Are they free or paid?
A: Samples are available for free,but the courier freight will be covered by customer account.
Q: Do you accept the third party inspection?
A:Yes, we fully accept third-party inspections.
Q: Why should I buy from you not from other suppliers?
A: Integrating the superior resources of China's steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.
Q:How can you guarantee quality?
A: Always a pre-production sample before mass production;Always 100% inspected before shipment
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