EStE355 High Strength Steel Plate

EStE355 High-Strength Structural Steel Coils‌ ‌Engineered for Heavy-Duty Construction & Industrial Loads‌ EStE355 structural steel combines exceptional strength-to-weight ratios with superior weldability, ideal for bridges, crane booms, and mining equipment. Certified to EN 10025-6 standards, it maintains performance across extreme temperatures (-50°C to +300°C).
We offer EStE355 High Strength Steel Plate and related grades with 100% factory direct pricing and free quotes available within 6 hours.

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Product Introduction

‌EStE355 High-Strength Structural Steel Coils‌

‌Engineered for Heavy-Duty Construction & Industrial Loads‌

EStE355 structural steel combines exceptional strength-to-weight ratios with superior weldability, ideal for bridges, crane booms, and mining equipment. Certified to EN 10025-6 standards, it maintains performance across extreme temperatures (-50°C to +300°C).


‌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 0.50 1.65 0.025 0.015 0.020 0.020 0.30 0.20 0.08 0.30 0.05 0.10 0.12 0.12

‌Key Features‌:

  • Ultra-low sulfur (0.015%) minimizes hot cracking during welding^[EN 1011-2]^.
  • Controlled manganese (1.65%) enhances hardenability without brittleness^[ASTM A6]^.
  • Micro-alloyed with Nb/Ti/V for grain refinement^[ISO 4885]^.

‌Mechanical Properties‌

Thickness (mm) Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Bend Test (Mandrel Diameter)
≤70 490–630 355 ≥22 2.5×t
70–85 480–620 345 ≥21 3.0×t
85–150 450–590 295 ≥18 4.0×t

‌Performance Highlights‌:

  • 630 MPa tensile strength outperforms S355J2 grades^[EN 10025]^.
  • 22% elongation enables cold-forming (stamping, roll bending).
  • Z35 certified through-thickness properties for critical joints^[EN 10164]^.

‌Applications‌

  1. ‌Infrastructure‌: Bridge trusses, offshore platforms, wind turbine towers.
  2. ‌Material Handling‌: Crane rails, forklift frames, conveyor systems.
  3. ‌Energy Sector‌: Hydropower penstocks, drilling rig components.

‌Competitive Advantages‌

  • ‌Fatigue Resistance‌: 1.5x cycle life vs. standard S355 steels (10⁷ cycles @ 250MPa)^[IIW]^.
  • ‌Corrosion Control‌: Optional AR400 abrasion-resistant coating available.
  • ‌Machinability‌: 180–220 HB hardness optimizes CNC cutting speeds.

‌Certifications & Testing‌

  • ‌Mandatory‌: EN 10204 3.1 mill certificates
  • ‌Optional‌: Charpy impact (-40°C), PMI testing, UT flaw detection
  • ‌Delivery‌: Annealed/normalized condition, shot-blasted surface (Sa2.5)

‌Logical Connectors‌:

  • ‌Contrast‌: While standard steels fail at 10⁶ cycles, EStE355 endures 10⁷.
  • ‌Example‌: For instance, bridge builders prioritize Z35 certification.
  • ‌Cause-Effect‌: Low sulfur enables seamless MAG welding.

‌Request technical datasheets or project consultations today!‌
MOQ 15MT. Available in 1,500–3,000mm widths. Export packaging (VCI paper + edge protectors).

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G90 Galvanized Sheet supplier

Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

Tel: +86 15635685959

E-mail: [email protected]  

WhatsApp: +86 18912200505

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