S355NL+Z35 Steel Plate | High-Strength Structural Steel with Maximum Z-Direction Performance
S355NL Z35 steel plate is a normalized fine-grain structural steel produced according to EN 10025-3 standard, designed for high strength, excellent toughness, and superior weldability in low-temperature environments.
The “Z35” designation refers to through-thickness reduction of area (≥35%) according to EN 10164, which significantly improves resistance to lamellar tearing during heavy welding operations.
This makes S355NL Z35 an ideal material for critical welded structures exposed to dynamic loads, cold climates, and offshore conditions.
At Huaxiao Metal, we supply S355NL Z35 steel plates with stable quality, full certifications, and global export support for engineering and fabrication industries.
Available Supply Range at Huaxiao Metal
Huaxiao Metal supplies S355NL Z35 steel plates with flexible specifications:
- Thickness: 6 mm – 300 mm
- Width: customized
- Length: customized or fixed
- Surface condition: hot rolled / normalized
- Edge condition: mill edge / cut edge
Additional services:
- CNC cutting
- Flame cutting
- Beveling
- Surface cleaning
Detailed Technical Specifications
Chemical Composition (Typical Analysis)
The chemical composition of S355NL+Z35 is strictly controlled to ensure excellent weldability and low-temperature toughness. (Note: Carbon equivalent is minimized for ease of fabrication).
| Element | Max % |
| Carbon (C) | 0.18 |
| Silicon (Si) | 0.50 |
| Manganese (Mn) | 0.90 – 1.65 |
| Phosphorus (P) | 0.025 |
| Sulfur (S) | 0.020 |
| Nitrogen (N) | 0.015 |
| Aluminum (Al) Total | 0.020 |
Mechanical Properties
Our S355NL+Z35 plates undergo normalized heat treatment to achieve a fine-grained microstructure, providing a perfect balance of strength and ductility.
Yield Strength (ReH): ≥ 355MPa (for thicknesses ≤ 16mm)
Tensile Strength (Rm): ≥470 – 630MPa
Elongation (A): ≥ 22%
Impact Energy (Charpy V-notch): Minimum 27 J at -50°C (L indicates)
Z-Direction Property (Z35): Minimum 35% reduction of area in the through-thickness direction.
Delivery Condition & Testing
Condition: Normalized (+N) or Normalized Rolled.
Ultrasonic Testing (UT): Compliant with EN 10160 S1, S2, S3 or ASTM A578/A435.
Z-Direction Test: According to EN 10164.
Key Features of S355NL Z35 Steel Plate
- High yield strength (355 MPa grade)
- Excellent low-temperature toughness (-50°C)
- Superior weldability and fabrication performance
- Strong resistance to lamellar tearing (Z35 quality)
- Suitable for heavy welded structures
- Stable chemical composition and fine grain structure
Applications of S355NL Z35 Steel Plate
S355NL Z35 steel is widely used in high-performance structural engineering projects, including:
- Offshore oil & gas platforms
- Wind turbine towers and foundations
- Bridges and large civil engineering structures
- Heavy cranes and lifting equipment
- Shipbuilding structural components
- Mining and earthmoving equipment
- Pressure vessel supporting structures
👉 It is especially suitable for welded thick plates under high stress and low-temperature environments.
Quality Control & Certification
All S355NL Z35 steel plates can be supplied with:
- EN 10025-3 compliance
- EN 10164 Z35 testing certification
- Mill Test Certificate (MTC)
- Ultrasonic testing (UT) report
- Third-party inspection (SGS / BV / TUV available)
Why Choose Huaxiao Metal as Your Supplier?
Huaxiao Metal is a professional global supplier of carbon steel, alloy steel, stainless steel, and aluminum products, serving engineering and industrial clients worldwide.
Our advantages:
- 15+ Years of Export Expertise
- Stable mill supply with consistent quality
- Full traceability with EN 10204 3.1 / 3.2 certificates
- Z15 / Z25 / Z35 through-thickness options available
- Fast delivery for stock materials
- Custom cutting and fabrication support
- Export experience to Europe, Middle East, South America, and Asia
- Advanced Processing Services
We don’t just sell raw plates. Our facility offers:
- Precision Cutting: Laser, Plasma, and Waterjet cutting to your CAD drawings.
- Surface Treatment: Sandblasting and priming (Shop Primer).
- Beveling: Professional edge preparation for direct welding.
👉 We help global buyers reduce procurement risk and improve project reliability.
FAQ – S355NL Z35 Steel Plate
What is S355NL Z35 steel?
S355NL Z35 is a high-strength structural steel with low-temperature toughness and enhanced through-thickness properties to resist lamellar tearing.
What does Z35 mean?
Z35 means the steel has at least 35% reduction of area in the thickness direction, improving resistance to lamellar tearing in welded structures.
What is the difference between S355NL and S355N?
S355NL has better low-temperature toughness (-50°C) compared to S355N (-20°C), making it suitable for colder environments.
What industries use S355NL Z35 steel?
It is widely used in offshore engineering, bridges, wind energy, heavy machinery, and structural fabrication.
Can Huaxiao Metal supply Z35 certified steel?
Yes, we supply Z15, Z25, and Z35 through-thickness quality steel plates with full certification and testing reports.
Can I customize the dimensions of the steel plates?
Absolutely. We offer custom thicknesses (up to 300mm), widths, and lengths. Our in-house cutting service ensures the plates are delivered ready for your assembly line.
Get a Quote for S355NL 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.
Looking for S355NL Z35 steel plate supplier with competitive price and stable quality?
Contact Huaxiao Metal today for:
- Latest price per ton
- Stock availability
- Technical consultation
- Fast quotation within 24 hours
We support global engineering projects with reliable structural steel supply.
