🟧 Product Overview

EN 10025‑5 S355J0W / S355J2W is the European structural weathering steel family, offering high strength, excellent atmospheric corrosion resistance, and reliable toughness.

• S355J0W – Weathering steel with guaranteed impact toughness at 0°C
• S355J2W – Weathering steel with guaranteed impact toughness at −20°C
• Performance – Strong patina formation, stable corrosion resistance, and excellent weldability

These grades are widely used in bridges, architectural façades, outdoor structures, and industrial applications requiring long‑term durability and aesthetic patina effects.

🟧 Standards

• EN 10025‑5 – Structural Steels with Improved Atmospheric Corrosion Resistance
• ASTM A588 / A242 (reference) – Equivalent international weathering steels
• GB/T 4171 (reference) – Chinese atmospheric corrosion resistant steels
• JIS G3125 (reference) – Japanese SPA‑H weathering steel

🟧 International Weathering Steel Comparison Table

Country	Standard	Common Grades
Europe	EN 10025‑5	S355J0W, S355J2W
America	ASTM A588 / A242	A588 Gr.A/B/C, A242
China	GB/T 4171	Q295NH, Q355NH, Q355GNH
Japan	JIS G3125	SPA‑H
International	Corten Steel	Corten A, Corten B

🟧 Available Grades

• S355J0W
• S355J2W

🟧 Product Specifications & Available Sizes

Dimensions

• Thickness: 1.5 – 20 mm
• Width: 1000 – 2000 mm
• Coil ID: 508 mm / 610 mm
• Coil OD: 900 – 2000 mm
• Coil Weight: 3 – 15 MT

Regular Sizes (mm)

Size	Size
1.5 × 1250 × C	3.0 × 1500 × C
2.0 × 1250 × C	4.0 × 1500 × C
2.5 × 1500 × C	5.0 × 1500 × C

🟧 Chemical Composition (S355J0W / S355J2W – typical)

Element	Range (%)
C	≤ 0.12
Mn	0.20 – 1.60
P	0.035 – 0.150
S	≤ 0.030
Si	0.25 – 0.75
Cu	0.20 – 0.50
Cr	0.40 – 1.25
Ni	0.20 – 0.65

🟧 Mechanical Properties (S355J0W / S355J2W – typical)

Property	S355J0W	S355J2W
Yield Strength	≥ 355 MPa	≥ 355 MPa
Tensile Strength	490–630 MPa	490–630 MPa
Elongation	≥ 20%	≥ 20%
Impact Toughness	27 J at 0°C	27 J at −20°C
Atmospheric Corrosion Resistance	2–8× carbon steel	2–8× carbon steel

🟧 Physical Properties

• Density: 7.85 g/cm³
• Modulus of elasticity: 210 GPa
• Thermal expansion: 12×10⁻⁶ /K

🟧 Manufacturing Processes

• Hot rolling
• Normalizing (optional)
• Pickling
• Leveling
• Slitting / Cutting to length
• Surface oiling

🟧 Primary Industry Usage

• Bridges and structural components
• Architectural façades and decorative panels
• Outdoor sculptures and landscape structures
• Railway vehicles
• Weather‑resistant building panels
• Industrial outdoor equipment

🟧 Why Use S355J0W / S355J2W Weathering Steel Coil

• European standard with high structural reliability
• Excellent atmospheric corrosion resistance
• Stable patina layer reduces maintenance
• Good weldability and processing performance
• Suitable for both architectural and structural applications

🟧 Why Choose WelSteels

• Full range of international weathering steel coils
• Stable mechanical and corrosion‑resistant performance
• Custom coil cutting and slitting
• SGS / BV inspection available
• Export‑grade seaworthy packaging
• Reliable delivery for global projects