Stahlinstitut VDEh – 08.12.2021



DIN EN ISO 683-5:2021-08, Heat treatable steels, alloy steels and free-cutting steels - Part 5: Nitriding steels

This standard supplements the international series of standards ISO 683-1 to -4 in which the technical delivery conditions for heat-treatable steels, case-hardened steels and free-cutting steels are standardised. The new nitriding steel standard replaces the previous European standard EN 10085:2001 and has been supplemented by additional steel grades and treatment conditions. Nitriding steels are quenched and tempered steels alloyed with the nitride-forming elements Cr, Mo and/or Al. These steels are generally intended for the production of quenched and tempered, usually machined and subsequently nitrided machine components. Nitriding steels are used wherever very hard and wear-resistant surfaces are required due to extreme loads, while at the same time maintaining high toughness of the core of the component.

Call for Abstracts: TOOLING 2022, 25-27 April 2022, Örebro/Sweden

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SEP 1220 - 5 "Testing and Documentation Guideline for the Joinability of thin sheet of steel, Part 5: Gas Metal Arc Welding (GMAW)" published with issue date 12.2020

When developing new materials before they are launched on the market as part of the material approval process the steel producers prove not only the basic material characterisation, but also the processability in terms of joining technology. The reason for this is the requirement for compatibility with the entire further processing process. In the past these tests were carried out according to the specifications of the individual automobile manufacturers. This resulted in a large and cost-intensive test effort which significantly delayed the introduction of new steels and made them unnecessarily expensive.

For this reason the Stahl-Eisen-Prüfblatt (SEP) 1220 was developed and published in 2011 in which the material approval process is described with regard to the joinability. The aim was to create a standardised approval procedure which is recognised by steel manufacturers and users, not only to accelerate the introduction of new materials, but also to simplify the provision of data and the comparability of test results. Part 1: General specifications, Part 2: Resistance spot welding, Part 3: Laser beam welding and Part 4: MIG-brazing were published with the issue date 8.2011.

The 1st edition of Part 5: Gas Metal Arc Welding (GMAW) could now be published with issue date 12.2020. The test methods specified in this Stahl-Eisen-Prüfblatt (SEP) are used to determine the suitability of steel sheets for the joining process of gas-shielded metal arc welding (process ISO 4063:135).

The Stahl-Eisen-Prüfblatt (SEP) 1220 describes methods for determination of the joinability of steel sheets without / with surface coating and the documentation of the results. It is meant as a basis for standardised material characterisation by welding, brazing, mechanical joining and adhesivebonding and is intended to standardise the exchange of data between material suppliers, car manufacturers and their suppliers. The SEP 1220 specifies the requirements for implementation. The joinability is assessed by the user based on the results of the joining test and documentation guideline and the specific application.

The basic structure of an SEP for the material approval process of joinability includes both the shape specimen and specimen preparation, the test methods and test conditions used as well as specifications for the experimental procedure up to the subsequent documentation of the test data. However, the results are not evaluated as this should be done depending on the particular application and the user.

SEP 1220-5 can be ordered from StahlDaten Shop or Beuth Verlag.

Stainless steels for springs - New edition of the standard as international standard EN ISO 6931-1

In November 2020 the new standard for stainless steels for springs EN ISO 6931-1:2020-11 was published by DIN. This standard replaces the former European standard EN 10270-3:2011 with comparable content. However, two major improvements have been introduced compared to the previous edition. Firstly, a standard grade was introduced for the limit dimensions of the diameter. Secondly, the additional steel grades X9CrNi18-9 (M.-No. 1.4325) and X5CrNiN19-9 (M.-No. 1.4315), which are already used in spring production, have been added. Due to the transition from a European standard to an international standard, there is an improved possibility to use this standard for orders outside of Europe.

Beuth Verlag, Berlin, EN ISO 6931-1:2020-11 – Stainless steels for springs

Update of the Stahl-Eisen-Liste (Register of European Steels) regarding steel grades from the offshore standard EN 10225:2019

Last year, the previously one-part standard EN 10225:2009 was published as a completely revised EN 10225:2019 "Weldable structural steels for fixed offshore structures – Technical delivery conditions", in 4 parts, one part each for plates, sections, hot finished hollow sections and cold formed welded hollow sections.

For the European Steel Registration Office, however, it was of particular interest that EN 10225:2009 was probably the last European standard that did not comply with the rules of EN 10027 Parts 1 and 2 – Designation system for steels.

With the new edition of EN 10225:2019 the short names and material numbers have now been adapted to the rules of EN 10027. Compared to the previous version, the short names and material numbers are now clearly assigned to the steel grades.

In order to facilitate the transition from the 2009 edition to the 2019 edition, the former steel designations are additionally listed in the new edition of EN 10225:2019 and in the Stahl-Eisen-Liste (Register of European Steels).

Steel Academy sets up a film studio for online seminars

The Steel Academy reacted to the corona epidemic and set up a film studio for its online seminars in Duesseldorf. With this technical investment it is possible to offer the seminar participants more than the usual picture motifs and formats of the current video communication software.
Using camera, microphone, spotlights, green screen as well as image and sound mixers, viewers now have an image that is similar to news broadcast. The studio was successfully launched at the end of August with a 3-days seminar on the electric arc furnace. 38 participants from 14 nations switched to the EAF live stream.

Chairman Prof. Klaus Krueger during his online presentation

The Steel Institute VDEh mourns Prof. Dr.-Ing. Dieter Ameling

The former chairman of the Steel Institute VDEh and president of the Wirtschaftsvereinigung Stahl has died at the age of 79.

Prof. Dr.-Ing. Dieter Ameling, from 1998-2008 Managing Member of the Board of the Steel Institute VDEh and from 2000-2008 also Chairman of the Steel Institute VDEh and President of the German Steel Federation, died on 4 September 2020 at the age of 79.

With the death of Dieter Ameling, the steel industry in Germany loses a personality who was recognised in business and politics, who directed the work of the steel organisations for many years and represented the political interests of the industry. When he began working for the organisations in Düsseldorf at the turn of the millennium, Ameling could already look back on a long career in the German steel industry. After studying metallurgy and materials science at the Technical University of Clausthal, followed by a doctorate, he began his career at the Saarland Röhrenwerke Bous. He then took on management positions at the Hamburg Stahlwerke, Thyssen Niederrhein, Saarstahl and finally Krupp VDM. In 1997 the TU appointed Clausthal Ameling as honorary professor.

Dieter Ameling not only had a comprehensive knowledge of the steel industry, but also the talent to explain complicated technical relationships in a simple and clear way. This made him a sought-after discussion partner in politics and among journalists. He was particularly keen to communicate the industry's achievements in the areas of innovation and sustainable development. He warned early on about the risks associated with a one-sided burden on the steel industry and instead emphasised the central importance of technological progress for climate and environmental protection. Among his achievements is his commitment to steel research, which has made the Max Planck Institute for Iron Research (MPIE) a world leader in the field of materials research.

The Steel Institute VDEh, of which Ameling had been a personal member since 1964 and whose board of directors he had belonged to since 1994, appointed him an honorary member in 2010. He has supported the technical-scientific community work of the iron and steel workers with great personal commitment, developed initiatives to give more attention to technical contexts in industrial policy debates, and made a sustained commitment to the promotion of young talent.

We will honour the memory of Prof. Ameling.

SEP 1950 " Heat Stability Test on shafts" 4th issue published with issue date 07.2020

Open-die forges produce heavy forgings for power engineering. Typical components are forged parts for gas and steam turbines. The shafts used for this purpose must not be subjected to any distortion under operating conditions which would cause high imbalance and thus increased shaft vibrations in the bearings.

The heat stability test is a quality assurance measure which ensures that the shaft runs stably at elevated temperatures. Test criteria for the hot run-out test were first laid down in 1966 in the Stahl-Eisen-Prüfblatt (SEP) 1950 "Warmrundlaufversuch an Turbinenläufern". In the meantime, the 3rd edition of 1997 has been adapted to the state of the art with the participation of operators of open-die forges and power plant manufacturers, after measurement technology in this field has undergone significant further development. With issue date July 2020, the Steel Institute VDEh publishes the 4th edition of SEP 1950 with the title "Heat stability test on shafts", for the first time also with English translation.

SEP 1950 can be ordered from Beuth Verlag.


Newsletter Vol. 2 – December 2020 (in german)

Newsletter Vol. 1 – April 2020 (in german)

Newsletter Vol. 2 – July 2019


  • METEC & 4th ESTAD 2019
  • CETAS 2019
  • BFI-Kolloquium
  • Tooling
  • Künftige Konferenzen
  • Seminare der Stahl-Akademie Herbst/Winter 2019


  • Leichtbau
  • Stahl-Eisen-Blätter
  • Projekte
  • Forschungsfeld Eisen und Stahl 


Newsletter Vol. 1 – März 2019


  • METEC & 4th ESTAD 2019
  • SCT2020, International Conference on Steel in Cars and Trucks
  • 36. Vortrags- und Diskussionstagung „Werkstoffprüfung 2018“ in Bad Neuenahr


  • VDI-Richtlinie zur Radioaktivitätsüberwachung von Schrott


  • Stahl-Eisen-Blätter des Stahlinstituts VDEh


  • Weiterbildung in der Stahl-Akademie 


Newsletter Vol. 1 – 4. Dezember 2018


  • International Society of Steel Institutes (ISSI)
  • 10th CLEANSTEEL-Konferenz
  • 8th International Congress on Science and Technology of Ironmaking (ICSTI)
  • 8th European Oxygen Steelmaking Conference (EOSC 2018)
  • 3rd International Conference on Ingot Casting, Rolling and Forging (ICRF 2018)
  • European Steel Technology and Application Days (ESTAD)


  • BMWi Forschungsfeld Eisen und Stahl innerhalb des 7. Energieforschungsprogramm


  • Abwärmenutzungspotenziale in Anlagen integrierter Hüttenwerke der Stahlindustrie


  • Leichtbau-Initiative des BMWi


  • SEP 1611 „Bewertung der Seigerungsstruktur der Kernzone an stranggegossenen Brammen“
  • SEP 1572 "Mikroskopische Prüfung von Automatenstählen auf sulfidische Einschlüsse mit Bildreihen"


  • Obmannschaft des Unterausschusses FES-UA 01/2 und Mitgliedschaft im FES-Beirat
  • Europäische Normung von Eisen und Stahl

Weiterbildung in der Stahl-Akademie

  • "Korrosionsverhalten nichtrostender Stähle"
  • "Simulation von Umformprozessen"
  • "Anforderungen an den Werkstoff Stahl"
  • "Fachbetriebe nach WHG"