Q345 Carbon Steel Coil refers to a type of steel coil made from the Q345 grade carbon steel, which complies with the Chinese standard GB/T 1591. This material is characterized by its moderate to high strength and good weldability.
Q345 Carbon Steel Coil refers to a type of steel coil made from the Q345 grade carbon steel, which complies with the Chinese standard GB/T 1591. This material is characterized by its moderate to high strength and good weldability.
Ingredients:
Carbon Steel: The primary component in Q345 Carbon Steel Coil is iron with a controlled carbon content (usually around 0.16-0.26%), as well as:
- Manganese: Enhances strength and toughness, often present up to around 1.6%.
- Silicon: Increases strength and hardness while also acting as a deoxidizer; typically less than 0.5%.
- Phosphorus and Sulfur: Limited to very low levels to ensure good weldability and ductility.
- Other trace elements might include nickel, chromium, or copper to provide specific properties based on application needs.
Uses:
- Structural Applications: Q345 coils are commonly used for manufacturing structural components like I-beams, columns, and braces due to their high yield strength and excellent welding characteristics.
- Cold Forming: They can be cold rolled into various shapes such as profiles, pipes, or sheets for use in construction and fabrication industries.
- Welded Fabrication: Ideal for creating large welded structures like bridges, pressure vessels, storage tanks, and heavy machinery frames.
- Construction Industry: For producing building components like roofing, wall cladding, and flooring systems where strength and durability are key.
- Automotive and Transportation: In vehicle bodies, undercarriages, and other load-bearing parts where medium-high strength and formability are required.
In summary, Q345 Carbon Steel Coils are versatile materials that offer a balance between strength, formability, and weldability. Their broad range of mechanical properties makes them suitable for a wide array of applications across several sectors, particularly in structural engineering and industrial fabrication projects.
| Product Name | Q345 Carbon Steel Coil |
| Standard | ASTM,AISI,DIN,EN,BS,GB,JIS |
| Grade | ASTM/ASME: A36, A283, A285, A514, A516, A572, A1011/A1011M |
| GB: Q195, Q235/Q235B, Q255, Q275, Q345/Q345B, Q420, Q550, Q690 | |
| JIS: SS400, G3131 SPHC, G3141 SPCC, G4051 S45C, G4051 S50C | |
| AISI 1008, AISI 1015, AISI 1017, AISI 1021, AISI 1025, AISI 1026, AISI 1035, AISI 1045, AISI 1050, AISI 1055, AISI 4140, AISI 4340, AISI 4130, AISI 5140, AISI 8620, AISI 12L14 | |
| SAE: 1010, SAE 1020, SAE 1045 | |
| Technique | Hot rolled / Cold rolled |
| Type | Mild steel / Medium carbon steel / High carbon steel |
| Surface | Coating, Pickling, Phosphating |
| Processing | Welding, Cutting, Bending, Decoiling |
| Delivery time | 10-30 days subject to the clients' requirement and quantity |
| Package | clients' requirement and Standard export sea-worthy packing |
| MOQ | 1 ton |
Available Size Range
| Dimension | Range |
| Thickness |
Cold Rolled: 0.2~6mm Hot Rolled: 3~12mm |
| Width |
Cold Roled: 50~1500mm Hot Rolled: 20~2000mm or customer's request |
| Length | Coil or as customer's request |
Chemical Composition
| Chemical Composition (≤%) | ||||||||||||||||
| Steel Grade | Quality Grade | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Ti | N | Nb | V | B | Al, ≥ |
| Q345 | Q345A | 0.20 | 0.50 | 1.70 | 0.035 | 0.035 | 0.30 | 0.50 | 0.10 | 0.30 | 0.20 | 0.012 | 0.07 | 0.15 | – | – |
| Q345B | 0.035 | 0.035 | ||||||||||||||
| Q345C | 0.030 | 0.030 | 0.015 | |||||||||||||
| Q345D | 0.18 | 0.030 | 0.025 | |||||||||||||
| Q345E | 0.025 | 0.020 | ||||||||||||||
