S355J2C+N: Unalloyed construction steel - ideal for the cold formation
What is S355J2C+N?
S355J2C+N is an unalloyed construction steel for many applications with different solutions. The term “S355” stands for the minimum stretch of 355 MPa, while “J2” one Describes notch of 27 joules at -20 ° C. The “+N” points out that the steel Normally, which leads to improved mechanical properties. The “C” stands for Good suitability for rating and rolling profile.
Chemical composition of S355J2C+N
The chemical composition of S355J2C+N includes a balanced mixture of carbon (c), silicon (si), manganese (mn), phosphorus (p), sulfur (s), chrome (cr), nickel (ni) and copper (cu). This combination gives the material its high strength and toughness.
Mechanical properties of S355J2C+N
- Stretch boundary: approx. ≥ 355 MPa (depending on the thickness)
- Train strength: 470 – 630 MPa (depending on the material thickness)
- Complaint: ≥ 27 J at -20°C and -40°C
- Welding suitability CEV (%) approx. 0.45 (depending on the material thickness)
- 8.00 g/cm³ (standard density for building rooms)
Advantages of S355J2C+N compared to other steels
- Suitability for folding and rolling profile
- Very good shape -stable properties
- Good weldability and processing
- Improved cold formability through the “C” identification
- Reduced risk of brittle fracture thanks to the low phosphorus and sulfur content
- Excellent weldability – no preheating required
Manufacturing process of S355J2C+N
The manufacturing process of S355J2C+N begins i. With the extraction and melting of raw materials such as iron ore, coke and various alloy elements. A decisive step in the production is normal glow (“+n”) that gives the S355J2C+N its optimized microstructure. The Bramme is heated to 850–950 ° C, held for a defined time and then slowly cooled in the air. This reduces internal tensions, improves the grain structure and ensures a evenly structure distribution.
Quality assurance is carried out by mechanical tests such as train attempts, notes and ultrasound tests.In addition, S355J2C+N must meet the requirements of DIN EN 10025-2 and is certified with a 3.1 or 3.2 product.
Effect of normalization on the material properties
Normal glow improves the grain structure of the steel, which leads to a more even distribution of the structure and thus leads to a higher homogeneity of the steel.
Areas of application
Normal glow improves the grain structure of the steel, which leads to a more even distribution of the structure and thus leads to a higher homogeneity of the steel.
Use in metal processing/vehicle construction:
S355J2C+N is often used for load-bearing constructions such as tippers, pendants, forestry and other machines, railway wagons, pipes etc.
Use in mechanical engineering
Thanks to its good folding properties, this steel is suitable for use in mechanical engineering, locksmiths and metal construction.
Applications in vehicle construction/wagon construction
Due to its mechanical properties, S355J2C+N is ideal for wagon construction and vehicle construction. Bailing standard DBS 918002-01 S355J2C+N are often used here too.
Standards and certifications of S355J2C+N
DIN EN 10025-2: European standard for building heels
S355J2C+N corresponds to the European standard EN 10025-2, which defines technical requirements for unalloyed building heights.
Test certificates and quality standards
3.1-certificate: Material test by the manufacturer 3.2 certificate: 0-dependent test by external test institutions such as TÜV, DNV, LR and much more.
Processing and weldability of S355J2C+N
Can S355J2C+N be welded?
Yes, S355J2C+N can be welded without any problems and is well suited for different welding processes.
Cutting and editing of S355J2C+N
The steel can be milled, drilled and cut without any problems, whereby laser and plasma cuts provide particularly precise results. Like to cut like the steel for you.
Is S355J2C+N suitable for the offshore area?
The special offshore steels such as S355G8+M or E36 are a better choice for particularly extreme conditions.
Specially developed for best edge results:
The increasing use of automated manufacturing processes for bending and clanted parts made of steel sheets requires replicable quality and optimal stretch values.
Calculate price for S355J2C+N
Let the price for an S355J2C+N product now be calculated online.
Your contact person
If you have any questions about our range or our services, please contact our contact person. We would be happy to help you.
Heiner Büsselmann
Tel.: +49 (0) 421/48 40 1922 – 21
Email: hbuessesselmann@unionstahl.com
Häufig gestellte Fragen (FAQ)
Is S355J2C+N rust -free?
No, this steel is not rust -free. However, it can be done through color coatings and galvanizes Rust can be protected.
Can S355J2C+N be welded?
Yes, S355J2C+N can be welded without any problems and is well suited for different welding processes.
Is S355J2C+N suitable for the offshore area?
Yes, S355J2C+N is suitable for many applications in the offshore area. However, the steel S355G10+N is a better choice for particularly extreme conditions.
Are there alternatives to S355J2C+N?
Yes, comparable steels are S355K2+N and S420MC that offer similar mechanical properties.
How is S355J2C+N delivered?
S355J2C+N is typically supplied in the form of sheets, profiles or pipes, depending on the requirements of the application.
What does the "+N" label mean?
The “+N” identification indicates that the steel has been normalized. This process improves the mechanical properties, especially strength and toughness.
Why is S355J2C+N an excellent choice?
S355J2C+N is a robust, high -strength steel that is characterized by outstanding mechanical properties. His excellent toughness and excellent weldability make it particularly suitable for demanding applications in steel and mechanical engineering.