Carbon Steel: Properties, Production, Examples and Applications
Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.
Types of carbon steel and their properties
Carbon steel can be classified into three categories according to its carbon content: low-carbon steel (or mild-carbon steel), medium-carbon steel and high-carbon steel . Their carbon content, microstructure and properties compare as follows:
| Carbon content (wt.%) | Microstructure | Properties | Examples |
|
| Low-carbon steel | < 0.25 | Ferrite, pearlite | Low hardness and cost. High ductility, toughness, machinability and weldability | AISI 304, ASTM A815, AISI 316L |
| Medium-carbon steel | 0.25 – 0.60 | Martensite | Low hardenability, medium strength, ductility and toughness | AISI 409, ASTM A29, SCM435 |
| High-carbon steel | 0.60 – 1.25 | Pearlite | High hardness, strength, low ductility | AISI 440C, EN 10088-3 |
Carbon Steel Description
Grade:
1)GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C,Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E
2)EN: S185,S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q
3)ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80
4)JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE
PRODUCT DETAILS
| A252 Seamless&Welded Pipe Piles Description |
| The chemical composition of A252 steel pipe mainly consists of iron, carbon, silicon, manganese and other elements, of which the carbon content is low, only about 0.2%. A252 steel pipe piles has excellent mechanical properties, high strength and toughness, tensile strength is generally between 400-550MPa, and has good low-temperature toughness. A252 seamless welded pipe piles play an important role in petroleum, chemical industry, machinery, construction and other fields. |
| Product Parameters |
| Product Name | A252 Seamless&Welded Pipe Piles |
| Standard | EN/DIN/JIS/ASTM/BS/ASME/AISI etc. |
| Outer Diameter | Seamless: 1/4"-36" | Welding: 21.3mm-3620mm |
| Round Tube: 1/2"-10" | Square Tube/Rectangular Tube: 15x15mm-400x600mm |
| Wall Thickness | Seamless: 1.25mm-50mm | Welding: 1.65mm-65mm |
| Length | 3-12 meters, Support customization |
| 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 |
| Seamless and ERW Welded Pipe | Maximum Phosphorus Content 0.050% |
| Mechanical Properties |
| A252 | Tensile Strength psi(Mpa) | Yield Strength psi(Mpa) |
| Grade1 | 50,000(345) | 30,000(205) |
| Grade2 | 60,000(415) | 35,000(240) |
| Grade3 | 66,000(456) | 45,000(310) |
| Scope of Application |
| Pile foundation, micropile, manufacturing, bridge, structure, etc. |