A572/S355JR Carbon Steel Coil
A572 / S355JR carbon steel coil is high strength low alloy (HSLA structural steel). Available in hot rolled and cold rolled types, including A572 Grade 42, Grade 50, Grade 60, Grade 65 and S355JR equivalent Q345B. Good weldability, formability and stable mechanical performance. Widely used for bridges, construction, machinery support and structural fabrication. We supply steel coils with MTC, support custom slitting, cutting and size processing, reliable quality and fast delivery.
A572/S355JR Carbon Steel Coil
A572/S355JR carbon steel coil is a widely used high-strength low-alloy (HSLA) structural steel coil. Manufactured with strict metallurgical control, this steel delivers reliable strength, good formability and excellent weldability for structural engineering projects. A572 series includes Grade 42, Grade 50, Grade 60 and Grade 65, while S355JR is its popular EN equivalent grade. It is produced via electric furnace smelting, featuring uniform internal structure, high purity and stable mechanical performance after cooling.
Product Parameters
| Product Name | A572/S355JR Carbon Steel Coil |
| Production Process | Hot Rolling, Cold Rolling |
| Applicable Standards | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE |
| Width Range | 45mm – 2200mm |
| Length | Custom Cut Size Available |
| Thickness Range | Hot Rolled: 2.75mm – 100mm Cold Rolled: 0.2mm – 3mm |
Chemical Composition
| A572 Grade | 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 Grade | 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 |
Application Scope
ASTM A572 / S355JR low alloy carbon steel coil is widely used for bridge panels, support plates, mechanical mounting plates, transmission towers, equipment racks and other structural components in construction and heavy machinery industries. It is the preferred material for structural fabrication that requires high strength and stable performance.
Equivalent Material Grades
| EU | German Standard | Japanese Standard | French Standard | British Standard | Canada | Italy | Spain | China GB | ISO | 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 |
We supply A572 Gr42, Gr50, Gr60, Gr65 and S355JR steel coils with factory test certificates (MTC). Custom slitting, cutting and surface treatment services are available according to customer requirements.
