s355nl vs s355j2

What is the difference between S355J2 and S355NL?

S355NL is a normalized, fine-grain steel with superior low-temperature toughness tested to -50℃, while S355J2 is a hot-rolled steel with toughness tested to -20℃. The primary difference is S355NL's enhanced performance in colder climates, making it suitable for applications like offshore structures, while S355J2 is more economical for general construction in temperate regions.

1. Impact Toughness:
S355J2: This grade is tough at -20°C (the"J2"indicates it can withstand an impact test at -20°C). This makes it suitable for use in moderate to cold environments, where some degree of toughness is required at low temperatures.

S355NL: The"NL"in S355NL stands for"Normalized"or "Normalized Rolling", and this grade is designed for low-temperature applications. It has improved impact toughness at -50°C, making it ideal for use in very cold environments or in applications that may experience cryogenic temperatures.

2. Low-Temperature Performance:
S355J2: While it is designed to maintain good toughness at temperatures down to -20°C, it is not specifically intended for extremely cold environments.

S355NL: On the other hand, S355NL is specifically designed for low-temperature performance and exhibits superior toughness at -50°C, making it more suitable for harsher climates or critical applications like offshore structures or certain cryogenic equipment.

3. Heat Treatment:
S355J2: This grade is typically thermomechanically rolled, and while it offers good mechanical properties, it does not undergo a specific normalization process to enhance toughness like S355NL.

S355NL: S355NL is normalized rolled or normalized, which helps refine the steel's microstructure and enhances its toughness, especially in low-temperature conditions.

4. Chemical Composition:
Both grades have similar chemical compositions, primarily consisting of carbon, manganese, silicon, sulfur, and phosphorus. However, S355NL may have slight adjustments in its chemical makeup to enhance its performance in low-temperature environments, while S355J2 is optimized for general structural applications in moderate climates.
5. Applications:
S355J2: It is suitable for general structural applications such as buildings, bridges, and machinery that may be exposed to lower temperatures but not extreme cold. It is commonly used in medium-strength structures.

S355NL: Because of its enhanced low-temperature toughness, S355NL is typically used in offshore platforms, tanks, and bridges where the material must maintain integrity in extreme weather or temperatures, such as in northern or polar climates.

What is S355NL equivalent to?

S355NL steel is a European standard alloy structural high-strength steel, normalized rolled weldable fine-grained structural steel plate, equivalent to the Chinese steel grade Q345E series.

Steel material equivalent to EN10025-3 S355NL grade
Chinese steel standard GB: Q345E
Japanese standard JIS: SEV245
American Standard ASTM: Type3 Grade 50
 

What are the properties of S355NL material?

S355NL Plate

This grade of steel is valued for its strength, weldability and durability. The "S" in S355NL signifies it as steel with "355" indicating a minimum yield strength of 355 MPa. The "NL" designation means it comes in a normalized condition after heat treatment to enhance its properties.

What is S355J2 equivalent material in China?

Q345D

EN10025 S355J2 is low alloy steel commonly used in Europe. EN10025 S355J2 equivalent grade in China is Q345D. Their chemical composition is slightly different and mechanical properties are similar.

What is 355 Jr material?

S355JR steel has a high strength-to-weight ratio, making it suitable for use in load-bearing structures such as bridges, buildings, and offshore structures. It has a minimum yield strength of 355 N/mm², making it one of the strongest steel grades available.

In the second,S355J2 steel plate shall be done charpy impacting test at low temperature minus 20 Degree Celsius,but S355NL steel plate shall be done this test at low temperature minus 50 Degree Celsius with minimum impact energy value 27J on longitudinal.

What does S355J2 stand for?

The "S" in S355J2 denotes that it is a structural steel, while the "355" indicates the minimum yield strength of 355 MPa (51.5 ksi) for thicknesses up to 16 mm. The "J2" suffix signifies that the steel has been tested for impact toughness at -20°C (-4°F), ensuring its suitability for low-temperature applications.

What is Q235 equivalent to JIS?

SS400

The Q235 steel can be substituted with equivalent materials that include A36 USA ASTM, Q235 China GB/T, and SS400 Vietnam/Japanese JIS.

What is S235J2 equivalent material?

EN10025 S235J2 is a carbon steel grade with good structural properties. Some common equivalent materials for EN10025 S235J2 carbon steel plate include: ASTM A36: A widely used structural steel in the U.S. that has similar properties in terms of tensile strength and yield strength.

What is the difference between S355 Jr and s275 Jr?

As to S275JR VS S355JR, actually they are totally not same thing. S275JR is carbon steel, while S355JR is low alloy steel. Both carbon steel S275JR and S355JR low alloy steel are under EN10025-2 standard. The S355JR low alloy steel is higher steel grade than carbon steel S275JR.

equivalent to s355jr steel Overview of S355JR

S355JR is a European standard grade for hot-rolled structural steels with a minimum yield strength of 355 MPa. Its equivalents in other standards offer similar properties for international sourcing. Common equivalents include ASTM A572 Grade 50 (USA), DIN ST52-3 (Germany), JIS SM490A (Japan), and GB Q345B (China). Gangsteel offers S355JR with equivalents like EN 10025-2 S355J0 and EN 10025-2 S235J0, ensuring CE marking compliance.

equivalent to s355jr steel Grade Mapping

S355JR 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 ST52-3: Direct match for European projects.

JIS SM490A: Good for Asian sourcing, with comparable weldability.

GB Q345B: Chinese equivalent for high-strength low-alloy needs.

GNEE steel provides dual-certified plates, including EN 10025-2 S275JR.

Is S355J2 better than S355J0?

Summary: S355J0 is suitable for applications where the temperature does not fall below 0°C, making it ideal for mild climate conditions. S355J2 is designed for colder environments, with superior toughness at temperatures as low as -20°C.

What is the difference between S355J2 and S355J0?

The main difference between S355J2 and S355J0 steel grades lies in their impact testing temperature requirements, which determines their suitability for different environmental conditions.

Both grades are structural steels under the EN 10025-2 standard with the same minimum yield strength of 355 MPa, but they have different specifications for notch toughness:

In summary, S355J2 is tougher at lower temperatures than S355J0 because it is specified to retain its impact resistance at temperatures as low as -20°C, while S355J0 is only guaranteed to do so at 0°C.

What is Chinese steel grade Q235 equivalent to?

ASTM A36

Q235 steel is a standardized grade in China, with equivalent counterparts in other international standards such as ASTM A36 (United States) and S235JR (Europe).

S355J2+N

Normalized or normalized rolled structural steel heavy plate. GNEE STEEL S355J2+N Zero is hot rolled structural steel for general steel constructions. N= Normalized.

Exceeding the requirements of EN 10025-2, GNEE STEEL S355J2+N Zero is a versatile structural steel for fabricated products and steel frame structures. Formability and highly consistent quality guarantee fast, uninterrupted production, generating clear savings in the costs of material management.

Dimension Range

GNEE S355J2+N Zero is available in thickness of 6.00 - 60.00 mm.

Fabrication and Other Recommendations

Welding:

Weldability is excellent with all welding processes. Increased working temperature requirements are less than those of the corresponding strength grades of standard steels. This means easier welding and cost savings under both workshop and site welding conditions.

Needed working temperatures for thick plates please consult SSAB Tech Support.

Forming:

SSAB S355J2+N Zero offers better formability properties than standard steels. Successful forming requires that the manufacturer uses good workshop techniques. Worn tools, poor lubrication, scratches on the surface of the steel as well as edge burrs will all reduce forming quality.

Guaranteed minimum bending radius for all directions is 1.5 x t up to 30 mm thick plate where t = plate thickness.

Heat treatment:

Recommendations for stress relieving and normalizing

Stress relieving 550 – 600°C (target 580°C)

2 minutes/millimeter of thickness, however, 30 minutes minimum. Slow cooling in the furnace.

Normalizing 900 – 940°C (target 920°C)

What is the difference between S275JR and Q235?

S275JR is generally steel rods, steel plates, steel strips, wire rods, and forgings with excellent strength. Q235B has certain elongation, strength, good toughness and castability, and is easy to punch and weld.

What is S355NL equivalent to?

S355NL steel is a European standard alloy structural high-strength steel, normalized rolled weldable fine-grained structural steel plate, equivalent to the Chinese steel grade Q345E series.

What is the equivalent of S355J2 in China?

Q345D

EN10025 S355J2 equivalent grade in China is Q345D. Their chemical composition is slightly different and mechanical properties are similar. In terms of chemical composition and mechanical properties, the S355J2 steel and EN10025 S355J2 equivalent grade Q345D almost can be used to replace each other.

What is the strength of S355J2 material?

470 to 630 MPa

S355J2 steel is known for its mechanical properties, making it ideal for structural applications. Its tensile strength ranges from 470 to 630 MPa, with a minimum yield strength of 355 MPa for thicknesses below 16 mm.

What is q235 equivalent to JIS?

SS400

Q235 steel plate equivalent steel standard-astm a36

1 minute/millimeter of thickness, however, 20 minutes minimum. Cooling in free air.

Is S355J2 better than S355J0?

Summary: S355J0 is suitable for applications where the temperature does not fall below 0°C, making it ideal for mild climate conditions. S355J2 is designed for colder environments, with superior toughness at temperatures as low as -20°C.