WStE315 High-Strength Structural Steel Coils
Optimized for Welded Frameworks & Medium-Load Structures
WStE315 structural steel delivers balanced weldability and strength, making it ideal for prefabricated building components, agricultural machinery, and transport equipment. Certified to EN 10025-6 standards, it maintains structural integrity in temperatures from -30°C to +200°C14.
Technical Specifications
Chemical Composition (Max Wt%)
| Element | C | Si | Mn | P | S | N | Al | Cr | Cu | Mo | Ni | Nb | Ti | V | Nb+Ti+V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Content | 0.18 | 0.45 | 1.50 | 0.035 | 0.030 | 0.020 | 0.020 | 0.30 | 0.20 | 0.08 | 0.30 | 0.03 | 0.05 | 0.05 | 0.05 |
Key Features:
- Low Sulfur (0.030%): Reduces hot cracking in arc welding^[EN 1011-2]^.
- Controlled Manganese (1.50%): Enhances hardenability and fatigue resistance^[ASTM A6]^.
- Micro-Alloyed with Nb: Refines grain structure for improved toughness^[ISO 4885]^.
Mechanical Properties
| Thickness (mm) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Bend Test (Mandrel Diameter) |
|---|---|---|---|---|
| ≤70 | 440–560 | 315 | ≥23 | 2.5×t |
| 70–85 | 430–550 | 305 | ≥22 | 3.0×t |
| 85–150 | 400–520 | 255 | ≥19 | 4.0×t |
Performance Highlights:
- 560 MPa Tensile Strength: Exceeds S235JR/S355JO grades^[EN 10025]^.
- 23% Elongation: Enables tight-radius bending (1.5D–3D radii) without cracking26.
- Z15–Z35 Certification: Available for through-thickness ductility in welded joints^[EN 10164]^.
Applications
- Construction: Warehouse trusses, conveyor support frames, and safety guardrails.
- Agricultural Machinery: Combine harvester chassis, grain silo reinforcements.
- Transportation: Trailer undercarriages, crane boom extensions58.
Competitive Advantages
- Cost Efficiency: 12% lower alloy costs vs. WStE355 grades.
- Machinability: 150–190 HB hardness ensures smooth drilling and stamping.
- Surface Quality: Pre-galvanized (G30–G60) options for rust-prone environments47.
Certifications & Logistics
- Mandatory: EN 10204 3.1 mill certificates + CE marking.
- Optional: Charpy V-notch testing (-20°C), PMI verification.
- Delivery: Oiled or shot-blasted surface (Sa2.5), VCI-coated coils with edge protectors37.
Logical Connectors:
- Comparison: While WStE355 suits heavy loads, WStE315 optimizes cost for medium-stress applications.
- Example: For instance, agricultural equipment makers prioritize Z15 certification.
- Cause-Effect: Reduced phosphorus (0.035%) lowers brittleness in cold climates.
Request project-specific quotes or material test reports today!
MOQ 10MT. Available in 1,200–2,500mm widths. Standard lead time: 12–20 days.
Packing And Delivery
