grade s420n en10025-3

Grade S420N EN10025-3: High-Strength Normalized Structural Steel

As a premier exporter and manufacturer of high-quality structural steel plates, Gangsteel specializes in producing grade S420N EN10025-3 compliant materials.

Grade S420N EN10025-3is a high-strength, low-alloy (HSLA), fine-grain normalized structural steel with 420 MPa minimum yield strength and 40 J impact toughness at -20°C.

This grade S420N EN10025-3 is ideal for heavy welded constructions such as bridges, cranes, offshore platforms, high-rise buildings, and pressure vessels.

Our grade S420N EN10025-3 plates are delivered in normalized (+N) condition to ensure fine-grain microstructure, excellent weldability, and consistent performance.

For a comprehensive overview of our en 10025 3 normalized steel plate offerings, explore our full range.

Grade S420N EN10025-3 Overview

Grade S420N EN10025-3(material number 1.8902) is defined in EN 10025-3:2019 — Hot rolled products of structural steels — Part 3: Technical delivery conditions for normalized/normalized rolled weldable fine grain structural steels.

Designation:

S420NL= same grade, tested at -50°C (27 J).

Gangsteel supplies grade S420N EN10025-3 in 6 mm to 250 mm thickness, with CEV ≤ 0.48.

Chemical Composition of Grade S420N EN10025-3 (Ladle Analysis, Max %)

Al ≥ 0.020%= fine-grain refinement. Low P & S = enhanced toughness.

Mechanical Properties of Grade S420N EN10025-3 (Normalized, Min Values)

Elongation per Lo = 5.65 √So.

Grade S420N EN10025-3 vs S420NL

Equivalent Grades for Grade S420N EN10025-3

Applications of Grade S420N EN10025-3

• Long-Span Bridges
• Offshore Jackets(non-arctic)
• Heavy Cranes
• High-Rise Columns
• Pressure Vessels

Why Gangsteel for Grade S420N EN10025-3?

• Mill-Direct Supply
• Full Certification– EN 10204 3.1/3.2
• Testing– UT, Z35, HIC
• Stock– 6–250 mm
• Global Export

Contact: admin@gangsteel.comProduct Page: en 10025 3 s420n normalized structural steel plate

Summary

Grade S420N EN10025-3is a high-strength normalized fine-grain structural steel with 420 MPa yield, 520–680 MPa tensile, and 40 J impact at -20°C. It is the ideal grade S420N EN10025-3 for heavy welded structures in moderate cold environments.

FAQ

What is grade S420N EN10025-3?

Grade S420N EN10025-3is a high-strength normalized weldable fine-grain structural steel with 420 MPa min yield (≤16 mm), 520–680 MPa tensile, and 40 J impact at -20°C. It ensures fine-grain structure for high toughness and weldability.

What is the chemical composition of grade S420N EN10025-3?

Max 0.20% C, 1.00–1.70% Mn, 0.025% P, 0.020% S, CEV ≤ 0.48, with Al ≥ 0.020% for grain refinement.

What are the mechanical properties of grade S420N EN10025-3?

• Yield: 420 MPa (≤16 mm) → 340 MPa (200–250 mm)
• Tensile: 520–680 MPa (≤100 mm), 500–650 MPa (>100 mm)
• Elongation: 19% (≤63 mm), 18% (>63 mm)
• Impact: 40 J longitudinal / 27 J transverse at -20°C

How does grade S420N EN10025-3 compare to S420NL?

Same yield, tensile, chemistry— only impact test differs:

• S420N: 40 J at -20°C
• S420NL: 27 J at -50°C

What are the equivalent grades for grade S420N EN10025-3?

• ASTM: A572 Gr. 65
• DIN: TStE 420
• JIS: SM570
• GB: Q420B

All require normalized delivery and -20°C impact.