S355J2+Z35 Steel Plate | High-Strength Structural Steel with Maximum Z-Direction Performance
S355J2+Z35 is a premium European standard (EN 10025-2) low-alloy structural steel plate. The “+Z35” designation signifies that the steel has undergone advanced refining to ensure a minimum average Reduction of Area of 35% in the thickness direction.
This specific grade is engineered for critical structural nodes where heavy welding leads to high shrinkage stresses. By utilizing S355J2+Z35, engineers can completely mitigate the risk of lamellar tearing in thick-walled sections.
At Huaxiao Metal, we supply certified S355J2+Z35 steel plates with full mill test reports, stable export quality, and fast global delivery.
Available Dimensions & Supply Range
Thickness: 10 mm – 200 mm
Width: up to 3,500 mm
Length: up to 18,000 mm
Delivery Condition: As-rolled / Normalized / TMCP (upon request)
Surface: Mill finish, shot blasted, primed (optional)
Custom cutting and project-based supply are available.
Technical Specifications (Standard: EN 10025-2 / EN 10164)
Chemical Composition (Typical, %)
| Element | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| Max | 0.20 | 0.55 | 1.60 | 0.025 | 0.025 |
Exact composition may vary slightly by mill; a mill test certificate (EN 10204 3.1) is provided.
Mechanical Properties
| Property | Requirement |
| Yield Strength | ≥ 355 MPa |
| Tensile Strength | 470 – 630 MPa |
| Elongation | ≥ 22% |
| Impact Test | 27 J at -20°C |
| Z-direction Reduction of Area | ≥ 35% (Z35) |
Key Features of Our S355J2+Z35 Steel Plate
Superior Purity: Refined via LF+VD (Vacuum Degassing) to minimize non-metallic inclusions.
100% UT Guarantee: Every plate is supplied with Ultrasonic Testing to EN 10160 S2/E2 or ASTM A578 Level C standards.
Excellent Weldability: Low Carbon Equivalent (CEV) ensures easy welding without pre-heating in most standard conditions.
Large Thickness Range: Available from 20mm up to 200mm in stock.
S355J2+Z35 Steel Plate Applications
If your project involves thick plates or highly restrained welds, using standard S355J2 may lead to costly lamellar tearing and rework. Z35 is often the more economical choice in total project cost.
Bridge Engineering: Main suspension cable anchorages and heavy girder joints.
Skyscrapers: Column-to-beam “Honeybee” nodes and heavy base plates.
Offshore Structures: Jack-up legs, platform decks, and node cans.
Industrial Machinery: Heavy press frames and turbine foundations.
Quality Documentation & Compliance
Each S355J2+Z35 steel plate is shipped with a comprehensive document package to ensure seamless project approval:
MTC (Material Test Certificate): EN 10204 3.1 or 3.2 (Witnessed by Lloyd’s, ABS, or BV).
Z-Direction Test Report: Confirming ≥ 35% reduction of area.
UT Inspection Report: Digital ultrasonic flaw detection results.
Heat Number Traceability: Hard-stamped and paint-marked on every plate.
Why Buy S355J2+Z35 from Us?
Direct Mill Access: Competitive factory pricing with no middleman.
Custom Processing: We offer CNC profile cutting, double-sided beveling, and shot-blasting.
Ready for Export: Sea-worthy packaging and expert handling of LC (Letter of Credit) documentation.
Send us thickness, quantity, delivery port, and standard — our team will respond within 24 hours.
FAQ – S355J2+Z35 Steel Plate
What is the difference between S355J2 and S355J2+Z35?
Both S355J2 and S355J2+Z35 are structural steels according to the European standard EN 10025, with a minimum yield strength of 355 MPa and notched impact toughness at -20°C. However, S355J2+Z35 has stricter requirements for ductility in the thickness direction according to EN 10164 (Z35, area reduction ≥35%), which is designed to prevent lamellar tearing in heavy, highly constrained welded structures.
Is S355J2+Z35 suitable for offshore structures?
Yes. It is widely used in offshore platforms, especially for thick plates and highly restrained welds.
Can you provide cutting and surface treatment?
Yes. Flame cutting, CNC cutting, blasting, and priming are available.
Can Huaxiao Metal support project-based supply?
Absolutely. We specialize in project orders with technical coordination and documentation support.
Is S355J2+Z35 much more expensive than standard S355J2?
Yes, the plate price is higher, but it often reduces total project cost by preventing weld failure, delays, and repair expenses.
Can I use Z25 instead of Z35 to reduce cost?
In some structures, yes. Share thickness and welding details — we will confirm whether Z25 is technically acceptable.
Get the Right S355J2+Z35 Steel Plate
Choosing the correct Z-Direction Steel Plate is critical for both structural safety and project cost control. Over-specifying increases material cost, while under-specifying risks weld failure and costly rework.
At Huaxiao Metal, our engineers help you select the most cost-effective S355J2+Z35 solution based on your plate thickness, welding design, and project environment.
📩 Fill in the form below with your required thickness, quantity, delivery port, and standard.
👉 You will receive technical confirmation + a competitive quotation within 24 hours.
