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 |
| Medium-carbon steel | 0.25 – 0.60 | Martensite | Low hardenability, medium strength, ductility and toughness |
| High-carbon steel | 0.60 – 1.25 | Pearlite | High hardness, strength, low ductility |
PRODUCT DETAILS
| Product Name | Q245R / Q345R Vessel Boiler Plate |
| Standard | GB/T 713-2023 Steel Plates for Boiler and Pressure Vessels; cross reference comparable to ASTM A516 Gr60/Gr70, EN 10028 P265GH/P355GH |
| Material | Q245R / Q345R |
| Technique | Cold Rolled, Hot Rolled |
| Common Sizes & Thickness | Common Thickness Range 3mm – 250mm; mainstream engineering thickness: 6mm / 10mm / 16mm / 20mm / 30mm / 50mm / 80mm / 100mm Usual Dimension Sizes Width: 1500mm / 1800mm / 2000mm / 2200mm / 2500mm Length: 6000mm / 9000mm / 12000mm, custom cut-to-length available |
| Surface Treatment | Standard hot rolled black oxide finish, shot blasting optional for better painting adhesion Anti-rust oil coating for long-sea transit storage Edge chamfered upon request for welding preparation |
| Temper | Hot rolled, controlled rolling, normalized; normalized + tempered for heavy thick plates over 60mm |
| Origin | China |
| HS Code | 7209250000 |
| Delivery Time | 7-15 days，depends on quantity ordered |
| After-sales Service | 24 hours online |
| Production Capacity | 100000 Tons/Year |
| Loading Port | Any port in China |
| Certificates | EN 10204 3.1 Mill Test Certificate (MTC) with full chemical & mechanical test records SGS / BV / TUV third-party inspection reports UT ultrasonic testing certificate (Class A/B/C as client required) Charpy impact, bending, tensile test reports HIC & SSCC test certificates for sour oil service order PED CE certification available for EU parallel export orders |
| Packaging | Standard Sea-worthy Packaging |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting |
| Tolerance | ±1% |
| MOQ | 5 tons |
| Payment Terms | TT, LC,Cash, Paypal, DP, DA,Western Union or Others. |
| Terms Of Trade | EXW,FOB, CRF, CIF ,CNF or others |
| Exported to | Saudi Arabia; UAE (Dubai, Sharjah); Qatar; Iraq, Kuwait;Vietnam, India, South Africa |
| Core Strengths | Strict low S&P impurity control, uniform grain structure for reliable welding without pre-heat cracking Stable Charpy impact toughness at 0℃, resistant to thermal cycling & pressure fluctuation Two tiered grades: Q245R cost-efficient for mild loads; Q345R high yield for heavy pressure working conditions Available Z15/Z25/Z35 through-thickness quality for thick-wall large vessel manufacturing Custom HIC-resistant version for sour crude & corrosive petrochemical service Full third-party test support to meet Middle East refinery inspection standards Large spot inventory & flexible cutting, fast bulk delivery for large oil project orders |
| Application | Petrochemical: Crude storage tanks, hydrocarbon separation vessels, refinery heat exchangers Energy & Power: Industrial boiler drums, waste heat recovery cylinders, steam separators Gas Industry: Natural gas buffer tanks, pressure buffer containers, LPG storage equipment Water Treatment: Desalination pressure vessels, high-pressure reaction tanks General Heavy Engineering: Medium-high pressure reactors, industrial heat exchange shells |
To get most competitive carbon steel sheet price for long-term business cooperation, please send your grade, size and quantity inquiry now!
