What is S235JR Carbon Steel Plate Sheet?
S235JR Carbon Steel Plate Sheet is a low-carbon structural steel plate conforming to EN 10025-2 standard. It has good weldability, formability and mechanical strength, and is widely used in steel structures, machinery manufacturing, bridge engineering and industrial equipment manufacturing.
Technical Specifications
| Category | Parameter | Details |
| Material Standard | GB/T | Q235, Q345, 20#, 45#, etc. |
| ASTM Equivalent | ASTM A36, A53, A106 | Common grades for international trade |
| Chemical Composition | Carbon (C) | 0.06% - 1.5% (varies by grade) |
| Manganese (Mn) | 0.25% - 1.65% | |
| Phosphorus (P) | ≤ 0.040% (max) | |
| Sulfur (S) | ≤ 0.050% (max) | |
| Silicon (Si) | 0.10% - 0.35% | |
| Mechanical Properties | Tensile Strength (Rm) | 370 - 860 MPa |
| Yield Strength (Re) | 235 - 690 MPa | |
| Elongation (Ag) | 10% - 25% | |
| Hardness (Brinell HBW) | 120 - 280 | |
| Physical Properties | Density | 7.85 g/cm³ |
| Melting Point | ~1370 - 1510°C | |
| Surface Treatment | Options | Hot-rolled, Cold-rolled, Galvanized, Black (uncoated), Pickled and Oiled |
| Dimensions | Plate/Sheet Thickness | 0.5 mm - 300 mm |
| Round Bar Diameter | 5 mm - 500 mm | |
| Pipe/Tube Size | 1/8" - 24" (ASTM standards) | |
| Processing Technology | Forming Methods | Forging, Casting, Machining, Welding |
| Applications | Typical Uses | Structural parts, automotive components, machinery, pipelines, tools |
| Certifications | Compliance | ISO 9001:2015, CE, Mill Test Certificate (MTC) |
| Packaging | Standard | Seaworthy wooden crates, bundles, or as per customer request |
Key Features & Benefits
Low carbon content ensures stable welding without complex processes.
Easy to cut, bend, stamp, and weld, meeting the processing needs of various structural components.
Yield strength reaches 235MPa, balancing structural load-bearing capacity and ease of processing.
Can be painted, galvanized, and sandblasted to meet the requirements of different operating environments.
How We Manufacture S235JR Steel Plates
Raw Material Control
High-quality steel billets are selected, and chemical composition and mechanical properties are strictly controlled.
Hot Rolling Production
Automated hot rolling process is adopted to ensure stable steel plate strength and uniform microstructure.
Dimensioning
Leveling, cutting, slitting, and length processing are supported to ensure dimensional accuracy.
Quality Inspection
Composition, mechanical properties, dimensions, and surface finish are tested to ensure products meet standard requirements.
Applications Across Industries
Steel Structure Construction
Used for factory buildings, warehouses, and building frames to improve structural stability and construction efficiency.
Bridge Engineering
Used for connecting plates and load-bearing components to ensure structural safety and reliability.
Machinery Manufacturing
Used for equipment frames, supports, and bases to facilitate processing and assembly.
Construction Machinery
Used for manufacturing equipment structural components, balancing strength and machinability.
Storage Tank Equipment
Used for storage tank shells and supporting structures to meet industrial manufacturing needs.
Vehicle Manufacturing
Used for trailer frames and transportation equipment structural components to improve durability and reduce costs.
Product
FAQ
Hot Tags: s235jr carbon steel plate sheet, China s235jr carbon steel plate sheet manufacturers, suppliers, factory
