Structural steel grades
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Technical information
Non-alloy structural steels according to European standards:
- S235JR, S235J0, S235J2*
- S275JR, S275J0, S275J2*
- S355JR, S355J0, S355J2, S355K2
- S450J0
Weldable fine grain structural steels according to European standards:
- S275M*
- S355M, S355ML
- S420M, S420ML
- S460M, S460ML
Steel grades according to American standards:
- A36-14 Grade 36*
- A572-15 Grade 42*, 50, 55*, 60*, 65*
- A588-15 Grade B*
- A709-13 Grade 36*, Grade 50, Grade 50S
- A913-15 Grade 50, 65, 70, A992-11(15) Grade 50
Steel grades according to Russian standards:
- GOST 535-2005 St3ps* cat 5
- GOST 19281-2014 09G2S*
Steel grades according to Japanese standards:
- JIS G 3106-2015 SM 400 A*, SM 400 B*, SM 400 C*; SM 490 YA* SM 490 YB*
- JIS G 3101-2015 SS 400*, S 490*
*available upon agreement
Other grades are available upon request.
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PerformanceRelated news & technical articles
More steel grade pages!
12 March 2020We have added more technical details for structural steel grades! Check out our newest steel grade pages that include mechanical and chemical property details.
Product NewsArcelorMittal at MIPIM – The world’s leading real estate market event
2 March 2020MIPIM, the world’s leading real estate market event, will take place from 2-5 June (postponed from March) in Cannes in the well-known Palais des Festivals. Gathering over 25 000 participants from over 100 countries, this four-day event will focus on the theme ‘The future is human.’ For the first time, ArcelorMittal Steligence® will participate in this event, presenting our new approach to construction and the many advantages of steel.
Event NewsArcelorMittal to expand plate and service offer for offshore energy sector
19 February 2020ArcelorMittal Europe – Flat Products produces a wide range of steel plates including grades with the most demanding qualities for offshore applications in the energy sector. With the ongoing improvements at ArcelorMittal Gijón, Spain, our offer to the offshore wind and oil gas markets is set to expand with new feasibilities and the development of new grades. ArcelorMittal’s service level to customers and product development cycles will also improve thanks to a closer partnership between ArcelorMittal Projects Energy, ArcelorMittal Europe – Flat Products, and Global R&D.
Product News
More steel grade pages!
We have added more technical details for structural steel grades! Check out our newest steel grade pages that include mechanical and chemical property details.
S355 structural steel grades
S355 structural steel grades are mainly used in building and civil engineering applications.
These structural steel grades are carbon-manganese steels with guaranteed minimum mechanical properties (yield strength and tensile strength) and with satisfactory ductility. They offer good weldability with all conventional welding processes. In addition to their excellent mechanical properties, structural steels have satisfactory toughness values, especially with +N or +M.
S420 and S460 high strength structural steel grades
S420 and S460 high strength structural steel grades are weldable, fine grain structural steels that offer good weldability with all conventional welding processes.
These steels are used for welded parts that must withstand high levels of strain. Typical applications are bridges, long span structures, high-rise buildings, and other architectural structures.
Each grade can be obtained with guaranteed impact properties at -20°C (N or M grades), or for low-temperature applications, at -50°C (NL or ML grades).
Text: Constructalia, ArcelorMittal Europe - Long Products
Images: ArcelorMittal Europe - Long Products, Gdańskie Inwestycje Komunalne, OMA/Sebastian van Damme, Chuck Choi/Foster & Partners
ArcelorMittal at MIPIM – The world’s leading real estate market event
MIPIM, the world’s leading real estate market event, will take place from 2-5 June (postponed from March) in Cannes in the well-known Palais des Festivals. Gathering over 25 000 participants from over 100 countries, this four-day event will focus on the theme ‘The future is human.’ For the first time, ArcelorMittal Steligence® will participate in this event, presenting our new approach to construction and the many advantages of steel.
Reusability, adaptability, and environmental impacts
It may not be typical for a material producer to take part in MIPIM, but ArcelorMittal is not only a steel producer. We offer a complete solution for the construction industry, and we look forward to bringing our advanced steel and composite solutions to the investors and building owners at MIPIM.
By 2050, we will be a world of 9.7 billion people according to the United Nations, and 70% of us will be living in urban areas. Affordable housing, infrastructure, workplaces – these are just a few of the constructions that will become ever more crucial. As the centre of business, employment, education, and innovation, it is essential that cities stimulate growth that is sustainable – for society and for the planet. At the very start of the design phase, we must consider the reusability of a building, its adaptability for future generations, and the environmental challenges we face.
If we want to meet the challenge of ensuring we have the buildings that we will require in the future, we need to build differently. We need flexible, transformable buildings that will adapt to the needs of society. We need innovation.
ArcelorMittal’s participation
Participating in MIPIM will be an occasion to engage in conversations with more than 6380 investors and developers in addition to city and local authorities. ArcelorMittal Steligence® CEO, Olivier Vassart, and Bart Staelens, Head of Segment and Product Sales Steering at ArcelorMittal Europe – Flat Products, will take part in panel discussions during this event.
On Tuesday 2 June, Prof. Olivier Vassart, will discuss the main theme with other speakers during the opening keynote address. On Thursday 4 June, Bart Staelens will participate in a panel discussion on sustainability and innovation. This is an opportunity to showcase some of our innovative materials, as well as our latest technology achievements and the way we produce them.
During the event, you are welcome to visit ArcelorMittal at booth P-1.A67.
More information here: https://www.mipim.com/
Innovation in steel: towards less carbon and more sustainable solutions
Committed to innovation in steel, ArcelorMittal has 10 research sites in Europe, North America, and South America with 1300 full-time researchers dedicated to further developing programmes both in the form of production and the products we offer, such as:
- Coatings: State-of-the-art coatings that consume fewer natural resources, are more durable, and are easier to process, like Magnelis® - a mix of zinc, aluminium, and magnesium - and Granite® organic coated steels range, ensuring very long durability for facades and roofing.
- High strength steel for low carbon construction: Our high strength steel grades for the construction industry combine reduced product thickness, very high yield strength, superior toughness at low temperatures, and outstanding weldability. These characteristics satisfy the needs of the construction industry for light and economical structures that meet both safety and sustainability criteria. For example, using our HISTAR® steel instead of regular steel achieves a CO2 reduction of around 30% in steel columns and around 20% in steel beams.
- Self-protecting weathering steel: Our Indaten® steels are almost maintenance-free for 80 years and are zero-waste at the end of life.
Steligence®
In 2018, ArcelorMittal launched the Steligence® concept to facilitate the next generation of high-performance buildings and construction techniques for our customers. Built into the holistic Steligence® approach is a broad range of thinner, lighter, high-performance steel solutions. Demonstrating the potential to reduce the embedded carbon footprint of a building by 38%, the Steligence® approach can also enhance its flexibility and economics. Considering the share of global emissions from the built environment, the impact of Steligence® could be particularly significant.
Text: Constructalia, ArcelorMittal Europe
Images: MIPIM, ArcelorMittal Europe
Video: ArcelorMittal
ArcelorMittal to expand plate and service offer for offshore energy sector
ArcelorMittal Europe – Flat Products produces a wide range of steel plates including grades with the most demanding qualities for offshore applications in the energy sector. With the ongoing improvements at ArcelorMittal Gijón, Spain, our offer to the offshore wind and oil gas markets is set to expand with new feasibilities and the development of new grades. ArcelorMittal’s service level to customers and product development cycles will also improve thanks to a closer partnership between ArcelorMittal Projects Energy, ArcelorMittal Europe – Flat Products, and Global R&D.
ArcelorMittal's goal
ArcelorMittal’s goal is to offer the most comprehensive range of plates for the offshore energy market. The steel plates we produce are typically utilised in the sub-sea and visible parts of offshore wind turbines and in oil and gas platforms.
Plate offer meets global standards
The offshore plate grades produced by ArcelorMittal meet all relevant European (EN10225) and North American (API2W) standards. They are already utilised by leading manufacturers of offshore wind and oil and gas infrastructure. These facilities are operated by major energy producers around the world.
Two of the most common grades used in these segments are S355 M/ML and S355 G10+M in thicknesses ranging from 40 to 70 mm. The ‘M’ in the grade name indicates that the steel has been thermo-mechanically rolled. The process changes the properties of the steel and makes it suitable for use in applications where high strength and excellent toughness at low temperatures are required. That includes a variety of offshore applications such as the topsides of oil and gas platforms, offshore wind substations, and the subsea ‘jackets’ which serve as foundations for offshore structures.
One of the key features of ArcelorMittal’s offshore plate offer is its enhanced weldability. This ensures the steel can be welded without affecting its high strength or excellent toughness.
Investments expanding feasibilities
Investments are ongoing in Gijón to expand ArcelorMittal’s offer for offshore energy. The goal is to produce grades for offshore applications in thicknesses over 50 mm. Improvements have already begun and some of the new feasibilities are expected to become available during 2020.
On the service side, ArcelorMittal has established a working group including representatives from ArcelorMittal Projects, Flat Products, and Global R&D. The group aims to qualify ArcelorMittal’s plate mills with more of the world’s major wind energy and oil and gas producers. Another task for the group will be to gain welding prequalification for our thicker plates in accordance with European (EN10225 and NORSOK M-120) and American (API RP2Z) standards. As the group works closely with customers through co-engineering projects, it also recommends topics for research and development to anticipate future market requirements and meet new customer needs.
Research and development for offshore applications is carried out by the ArcelorMittal Global R&D Centre in Ghent, Belgium. The R&D Centre is equipped with state-of-the-art tools and facilities including a five-wire submerged arc welder, heavy-duty fatigue setups, and unique metal processing equipment. This enables ArcelorMittal to test plates, tubes, and pipes to support new product development. ArcelorMittal Global R&D Ghent also provides technical assistance to ArcelorMittal’s customers through co-engineering projects on topics such as lightweight design, fatigue improvement, and optimisation of welding processes. The research centre is a joint venture between ArcelorMittal and the Flemish Region.
New products in development
A key concern for offshore customers is corrosion. ArcelorMittal Global R&D is constantly developing new products which make offshore structures lighter, and reduce operational costs by improving corrosion resistance. To ensure their suitability for marine applications, these steels typically undergo field trials in harsh, real-world environments.
About ArcelorMittal Projects Energy
ArcelorMittal Projects Energy has a global network of offices to support customers wherever their projects are located. It acts as a one-stop shop for energy customers who are developing energy projects for wind and oil and gas.
ArcelorMittal Projects Energy can leverage all parts of the ArcelorMittal group to source products from different segments. The group also has specialty stocks of steel strategically located near major offshore oil and gas and wind energy production areas. That enables ArcelorMittal Projects Energy to provide a complete and customised range of steel solutions and services. They include dedicated project management and prefabrication almost anywhere in the world.
More info: ds.arcelormittal.com/projects
Text: ArcelorMittal Europe Communications
Photos: ArcelorMittal, curraheeshutter/Shutterstock.com, F. Schmidt/Shutterstock.com
Useful information
MoreA wide range of the highest quality
The mechanical characteristics of ArcelorMittal's sections are improved by precise control of the temperature during the rolling process.
Steels, produced using thermomechanical rolling (delivery condition M), feature improved toughness values thanks to a lower carbon equivalent and a fine microstructure when compared with normalised steels. With regard to their technological properties, the thermomechanically rolled steels have good cold forming properties. Similar to conventional structural steels, they can be flame straightened provided specific maximum temperatures are not exceeded.
In case stress relieving is considered for reducing residual stresses, the usual parameters concerning temperature range and heating time according to the rules of practice must be applied. Hot forming, which is uncommon for the fabrication of sections, must not be performed in accordance with EN 10025:2004.
The steels are typically delivered with an Si content ranging between 0.14% and 0.25% and are as such capable of forming a zinc layer during hot-dip galvanisation.
As the phosphorus content of these steels is usually lower than 0.035%, this does not have any influence on the final thickness of the coating in the considered Si range.