Which steel grade is best equivalent to S355J2+N

Looking for the best equivalent to S355J2+N steel?

As a leading steel manufacturer, GNEE provides high-quality structural steel plates with globally recognized standards and reliable performance.

In this guide, we will explain which steel grades are equivalent to S355J2+N, how to choose the right substitute, and why sourcing directly from GNEE ensures quality, cost efficiency, and fast delivery.

GNEE is a professional steel supplier established in 2008, specializing in carbon steel, alloy steel, stainless steel, and pressure vessel materials. With advanced production lines, strict quality control systems, and global export experience, we provide certified materials that comply with EN, ASTM, JIS, and GB standards.

Our S355J2+N steel plates are widely used in construction, bridges, machinery, and offshore engineering projects worldwide.

Hot rolling production workshop

S355J2+N is a non-alloy structural steel grade defined under EN 10025-2. It is known for its high strength, excellent weldability, and impact resistance at low temperatures.

Key Characteristics of S355J2+N Steel

• Minimum yield strength: 355 MPa
• Impact test: 27J at -20°C (J2)
• Normalized rolling condition (+N)
• Good weldability and machinability
• Suitable for dynamic and low-temperature environments

Typical Chemical Composition (Max %)

S355J2+N low alloy steel material mechanical properties:

When selecting an equivalent to S355J2+N, it's important to match mechanical properties, chemical composition, and application requirements. Below are the most recognized equivalents across different standards.

• EN Standard Equivalent to S355J2+N

S355K2+N: Similar strength, better low-temperature toughness (-20°C to -30°C)

S355NL: Improved impact resistance for colder environments

• ASTM Equivalent to S355J2+N

ASTM A572 Grade 50: Comparable yield strength (345 MPa), widely used in structural applications

ASTM A516 Grade 70: Suitable for pressure vessels, but not a direct structural replacement

• JIS Equivalent to S355J2+N

SM490B / SM490C: Similar strength range, commonly used in Japan for structural purposes

• GB (China) Equivalent to S355J2+N

Q355B: Closest equivalent for general structural use

Q355D: Better low-temperature performance, closer to S355J2+N

en 10025 s355j2 n equivalent Grade Mapping

EN 10025 S355J2+N has direct equivalents based on strength and toughness. The table below maps it to key standards:

Key Notes on Grade Mapping:

• ASTM A572 Gr 50: Functional equivalent for general use, with similar yield (345 MPa).
• DIN ST52-3N: Direct match for European projects, with normalized condition.
• JIS SM490YA: Good for Asian sourcing, with comparable weldability.
• GB Q355D: Chinese equivalent for high-strength low-alloy needs.

These mappings are functional, but verify for specific codes. Gangsteel provides dual-certified plates, including EN 10025-2 S235J2 steel and EN 10025-2 S355JR+N.

Selecting the right equivalent depends on several critical factors:

Mechanical Property Matching

Ensure the yield strength and tensile strength are similar or higher than S355J2+N. Grades like ASTM A572 Gr.50 or Q355D are commonly selected for this reason.

Impact Resistance Requirements

If your project requires low-temperature performance, choose grades like S355K2 or Q355D, which offer similar or better toughness.

Application Environment

Bridges & buildings → ASTM A572 Gr.50

Pressure vessels → ASTM A516 Gr.70

Cold regions → S355NL or Q355D

EN 10025 S355J2+N is used in construction (high-rise, bridges), offshore (platforms), and machinery (cranes).

Equivalents allow substitution:

• For general use: ASTM A572 Gr 50 in US projects.
• For cold resistance: DIN ST52-3N for European machinery.

Substitution considerations:

• Standards Compliance: EN for Europe (CE marking), ASTM for US (AWS codes).
• Toughness: EN grades have impact testing; ASTM may not, requiring supplements for cold use.
• Cost/Availability: EN in Europe, ASTM in US; Gangsteel bridges this with dual-certified plates.

For low-temperature equivalents, check EN 10025-2 S355K2 steel or EN 10025-2 S235J2 steel.

Strong Manufacturing Capability

• Annual production capacity of 30,000 tons
• Advanced rolling and heat treatment facilities
• OEM & ODM customization available

Strict Quality Control

• Full inspection (UT, RT, mechanical testing)
• Mill test certificates (MTC) provided
• Compliance with EN, ASTM, JIS, GB standards

Global Export Experience

• Exported to 100+ countries
• Fast delivery and flexible logistics
• Professional technical support team

Finished plates in warehouse – "Ready stock for export"

Choosing the right equivalent to S355J2+N is essential for ensuring performance, safety, and cost efficiency in your project. Whether you need ASTM, JIS, or GB alternatives, GNEE offers reliable solutions backed by manufacturing expertise and global supply capability.

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What is the equivalent material of S355J2 N?

S355J2+N (EN 10025-2) is a structural steel commonly equated to ASTM A572 Grade 50 in the US, DIN St52-3N in Germany, and Q355D/Q345D in China. It is a normalized, high-strength (355 MPa yield) steel with guaranteed impact toughness at -20°C, often used in bridges, heavy machinery, and offshore structures.