Structural steel grades
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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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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 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 NewsOur Long Products improve mobility on the Moselle
10 December 2019With a length of 560 km, the Moselle is a major European waterway, crossing France, Luxembourg, and Germany. Next April, a brand-new steel-concrete composite bridge will rise on the French bank of the river. It is currently being built with beams from ArcelorMittal Europe – Long Products assembled in box girders entirely prefabricated by Steligence® Fabrication Centre in Luxembourg. About 200 km from there, on the German bank of the Moselle, new locks are being installed thanks to ArcelorMittal Sheet Piling.
Project 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
Related link(s)
H section in S 460 M used for the new Triangle bridge in Dunkirk
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
Related link(s)
Plates for the offshore energy market are produced at ArcelorMittal’s mills in Gijón
ArcelorMittal Global R&D Ghent has a unique set of testing equipment to for offshore applications
Testing components for offshore wind foundations at ArcelorMittal Global R&D Ghent
Our Long Products improve mobility on the Moselle
With a length of 560 km, the Moselle is a major European waterway, crossing France, Luxembourg, and Germany. Next April, a brand-new steel-concrete composite bridge will rise on the French bank of the river. It is currently being built with beams from ArcelorMittal Europe – Long Products assembled in box girders entirely prefabricated by Steligence® Fabrication Centre in Luxembourg. About 200 km from there, on the German bank of the Moselle, new locks are being installed thanks to ArcelorMittal Sheet Piling.
Safer and more efficient access on the river
Built in 1942, the old bridge located in Tonnoy, France was deteriorating and was no longer in line with the latest standards regarding mobility. With this new 92-metre bridge, user safety will increase thanks to a new footbridge dedicated exclusively to pedestrians and cyclists and a wider road for vehicles traffic. The bridge will also limit the impacts on the Moselle riverbed and ensure better hydraulic flow thanks to the presence of three pillars instead of four.
As for the locks in Germany, the existing ones are no longer up to date in their dimensions, causing waiting times at the lock passages. This is a major issue, especially when freight transport has to share the route with the abundant tourist excursion boats. As a solution, the locks will be equipped with a second lock chamber, in larger dimensions (210 m x 12.5 m). Thanks to the second lock chambers, waterways as ecological and economic modes of transport will become even more attractive, which will also strengthen the reputation of this economic area.
S460M: the key advantage to winning this bridge project
In early September, construction of the Tonnoy bridge took a huge step: the delivery on site and the installation of the box girders. The girders, fabricated and painted by Steligence® Fabrication Centre, are composed of 24 beams in grade S460M produced in ArcelorMittal Europe – Long Products’ mill in Differdange. They measure between 30.5 m and 35.4 m and weigh a total of 187 tonnes.
The use of S460M structural steel grade allowed for weight reduction, which was a competitive advantage in this project that was initially supposed to be completely built with concrete. Thanks to ArcelorMittal steel, construction time and costs were considerably reduced as there was no need for formwork, sanding, welding, or confinement.
For the installation of the 12 girders (eight 29.85-m girders of 2 beams and four 35-m girders of 2 beams), a 220-tonne lifting crane was used. Transportation was organised by the Steligence® Fabrication Centre with the help of MKTS transport company. This special transport had to be regulated by pilot cars and Luxembourgish and French law enforcement.
Improving waterway transport
Out of the ten locks that require work, the Zeltingen and Fankel locks are already extended and in operation. For the Trier lock, the overall construction comprises the extension of the upper and lower outer harbour to a length of 225 m, the relocation of the Trier water gauge, the construction of a new control centre for the locks of Zeltingen, Wintrich, Detzem, and Trier, as well as an ecological compensation measure at the Monaise sports boat harbour.
The upper outer harbour, the central piers in the upper and lower water, will be built using steel sheet piling from ArcelorMittal Europe – Long Products, produced in the Belva milll. A single anchored PU® 22 sheet pile wall will be used for the upper outer harbour and an approach dolphin in the lower water will be constructed as a circular cell from AS® 500 profiles – filled with sand or other material – that will be dismantled at the end of the new lock construction.
Works for the bridge are still ongoing on the banks of the Moselle with completion foreseen in April 2020. As for the Trier lock, completion should take place before the end of 2019.
Text: ArcelorMittal Europe Communications
Images: ArcelorMittal Europe
Related link(s)
S460M sections in the Moselle River steel-concrete composite bridge
Moselle River steel-concrete composite bridge construction
S460M sections in the Moselle River steel-concrete composite bridge
Trier lock renovation on the Moselle River
The ten locks on the Moselle River
New locks being installed on the German banks of the Moselle River with ArcelorMittal sheet piles
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.