Technical Standards

This Stahl-Eisen test specification (SEP) applies to the automated ultrasonic immersion testing of appropriately prepared rolled or forged samples of steel for long products. Described are agreements, personnel qualification, preparation of test specimens, the test equipment and its inspection, adjustment, sensitivity classes, test volume, test procedure, assessment and test report. An example assessment is included. Important change: Sensitivity setting shall be carried out no more with a reference block (calibration block), but with a sample of the test job.

SEE 202 : Hot working materials for dies in extrusion presses for the processing of aluminium and aluminium alloys Edition: 01.08.1995 Title and description automatically translated using Deepl API

SEE 201: Materials for tools in tube and extrusion presses for the processing of copper and copper alloys Title and description automatically translated using Deepl API

Testing and documentation guideline for the joining suitability of thin steel sheets - Part 2: Resistance spot welding, 3rd edition, August 2025 The test methods specified in this steel-iron test sheet (SEP) are used to determine the suitability of steel thin sheets in automotive engineering for the resistance spot welding joining process. The test scope and conditions, determination of quality limits, destructive and non-destructive tests, and documentation of the results are described. Example diagrams are included for the test and for analysing the results. - Changes compared to the 2nd edition are listed in a table. Publication of the 3rd edition: August 2025 Title and description automatically translated using Deepl API

The test methods specified in this Stahl-Eisen test specification (SEP) describe the procedure to determine the suitability of automotive steel sheets for joining via the process of projection welding. Exemplarically, a nut with segmented projections is welded to a thin steel sheet. Described are sample preparation, welding equipment and test conditions, determination of quality levels, the test procedure itself (visual testing, thread engagement, weld nut set-down, push-out and pull-out testing, torque testing, metallography), as well as documentation of results. Example diagrams are given for testing and example sheets for the evaluation of results.

Testing and documentation guideline for the joining suitability of thin steel sheets Part 1: General information, 2nd edition, November 2024 This first part of the SEP 1220 test sheet series contains the general requirements. It serves as a basis for uniform material characterisation and is intended to standardise the exchange of data between material manufacturers and users. It describes the characterisation of base materials, sampling locations and general test conditions, including recommendations for cyclic testing. The data format for the data exchange of the tests (data header) is explained in detail. Publication: August 2011 Title and description automatically translated using Deepl API

Labelling of sponge iron Issue: 01.12.1979 Title and description automatically translated using Deepl API

Ceramic refractory materials - fireclay bricks for general industrial applications (brick group A up to 45% Al2O3) Issue: 01.12.1984 Title and description automatically translated using Deepl API

Ceramic refractory materials - Labelling of unshaped refractory and refractory-resistant products by a code number key Edition: 01.12.1984 Title and description automatically translated using Deepl API

Ceramic refractory materials; fireclay bricks for blast furnaces and hot blast stoves Issue: 01.12.1984 Title and description automatically translated using Deepl API

Ceramic refractory materials - Acid fireclay bricks for pig iron and steel pans Issue: 01.12.1984 Title and description automatically translated using Deepl API

Ceramic refractory materials - Basic bricks Issue: 01.12.1984 Title and description automatically translated using Deepl API

Ceramic refractory materials; alumina-rich bricks Issue: 01.12.1984 Title and description automatically translated using Deepl API

Cast steel for flame and induction hardening - Technical delivery conditions Issue: 01.01.2018 Title and description automatically translated using Deepl API

Cold-drawn cast steel - Technical delivery conditions Issue: 01.04.2019 Title and description automatically translated using Deepl API

SEW 605: The weight reduction of vehicle components has led to more filigree components and the use of high-strength materials. Conventional solutions with heat-treatable steels do not always fulfil all requirements in terms of technical reliability, cost-effectiveness and environmental friendliness. Continuously cooled bainitic steels, as can be produced as a result of hot forming in the austenite area, are in some cases much better able to combine the aforementioned aspects, which has led to the successful introduction of such components in the automotive industry over the last decade. This trend is reflected in a large number of commercially available bar steel and wire rod products. To ensure the required hardenability, these products are characterised by increased manganese content, sometimes in combination with chromium, molybdenum and nickel. Such steels are not described in any existing material standard today. This steel-iron material sheet provides customers with a general description of this new class of steel. In naturally cooled steel products, the cooling rate varies depending on the part geometries (or bar steel diameters). In order to be able to set constant properties, the steel composition (in particular the manganese and chromium content) is adapted to the respective natural cooling rates. Even though the steel concept described has been established for a long time and key patents have already expired, some commercially available steels have been specially modified for certain processes and are protected by patent applications. Title and description automatically translated using Deepl API

Steels for larger forgings for turbine and generator components Issue: 01.01.2001 Title and description automatically translated using Deepl API

SEW 550 Steels for larger forgings - Quality specifications, 4th edition, December 2024 SEW 550 deals with steels primarily for general mechanical engineering, which are used for the production of larger open-die forged components in the quenched and tempered or normalised condition. (SEW 555 applies to energy technology). The first edition of SEW 550 was published in 1951, followed by editions in 1957 and 1976, after which ISO 683-2 and DIN EN 10250 (1999) were developed, which differ from SEW 550 in terms of material grades and material properties. The wall thickness range extends from 160 to 750 (1000) mm. SEW 550 specifies the chemical composition, sampling, mechanical properties (in the sample layers L, T and Q) as well as testing and documentation. Appendix A contains formulae for calculating the relevant heat treatment diameters. New in SEW 550 is the criterion for through-hardenability. Compared to the 3rd edition in 1976, 7 materials have been added and 2 deleted. This SEW is available for the first time in English translation. Edition: December 2024 Title and description automatically translated using Deepl API

High-strength cast steel with good weldability - Technical delivery conditions Issue: 01.12.2017 Title and description automatically translated using Deepl API

Heat-resistant rolled and forged steels Issue: 01.02.1976 Title and description automatically translated using Deepl API

Stainless cast steel - Technical delivery conditions Edition: 01.12.2017 Title and description automatically translated using Deepl API

Stainless rolled and forged steels Issue: 01.02.1997 Title and description automatically translated using Deepl API

Non-magnetisable cast steel - Technical delivery conditions Edition: 01.06.1998 Title and description automatically translated using Deepl API

Non-magnetised steels, technical delivery conditions Issue: 01.11.1991 Title and description automatically translated using Deepl API

Ferrous alloys with special thermal expansion Issue: 01.07.1991 Title and description automatically translated using Deepl API

Procedure qualifications for production welding of cast steel Edition: 01.07.1986 Title and description automatically translated using Deepl API

High-strength liquid-quenched and tempered fine-grained steels - Technical delivery conditions for tubes and hollow sections Edition: 01.01.1993 Title and description automatically translated using Deepl API

Weldable unalloyed and low-alloy steels. Recommendations for processing, especially for fusion welding Issued: 01.10.2017 Title and description automatically translated using Deepl API

Unalloyed and alloyed heat-resistant ferritic steels - Preheating during welding Issue: 01.04.1987 Title and description automatically translated using Deepl API

Definitions Normalising forming and thermomechanical forming Edition: 01.06.1989 Title and description automatically translated using Deepl API

Mechanical-technological properties of weldable fine-grained structural steels, normalised or normalising rolled, in larger product thicknesses up to 250 mm, Part 2: Fine-grained structural steels according to DIN EN 10028-3 for pressure vessel construction pressure vessel construction - steel grade P460 Issue: 01/05/2011 Title and description automatically translated using Deepl API

Mechanical-technological properties of weldable fine-grained structural steels, normalised or normalising rolled, in larger product thicknesses up to 250 mm, Part 1: Fine-grained structural steels according to DIN EN 10025-3 for structural steelwork - Steel grade S460 Steel grade S460 Issue: 01/05/2011 Title and description automatically translated using Deepl API

Unalloyed and alloyed pressure vessel steels for use at moderately elevated and elevated temperatures - Technical delivery conditions for flat steel products Edition: 01.05.1993 Title and description automatically translated using Deepl API

Ageing and test criterion for the ageing resistance of weldable steels Issue: 01.12.1993 Title and description automatically translated using Deepl API

Testing the resistance of Advanced High Strength Steels (AHSS) for automotive engineering against production-related hydrogen-induced brittle fractures Publication: September 2011 Title and description automatically translated using Deepl API

Determining the bulk density of blast furnace slag chippings with the overflow volumometer Publication: March 1966 Title and description automatically translated using Deepl API

Warm run-out test on shafts Publication: July 2020 Title and description automatically translated using Deepl API

Measurement of the waviness coefficient WSA(1-5) on cold-rolled flat products Title and description automatically translated using Deepl API

Test method for determining particle detachment during the forming of sheet metal with a zinc-iron alloy (ZF) coating Publication: March 2001 Title and description automatically translated using Deepl API

Magnetic induction method for measuring the thickness of zinc coatings on hot-dip galvanised sheet and strip Publication: January 1993 Title and description automatically translated using Deepl API

Testing the adhesion of zinc coatings on hot-dip galvanised sheet metal, ball impact test Publication: January 1991 Title and description automatically translated using Deepl API

Non-destructive surface hardness testing of ferromagnetic steel products using electromagnetic methods Publication: June 2016 Title and description automatically translated using Deepl API

Automated ultrasonic testing of rotationally symmetrical steel forgings with computer-controlled data acquisition and processing This test sheet deals with the ultrasonic testing of steel forgings against SEP 1923 with computerised data acquisition and processing to detect internal defects using the pulse echo technique. The objectives of this test sheet are - to increase test reliability, - to improve the reproducibility of the test results by recording the test data, - to make all test data convertible into a device-independent format in order to facilitate subsequent evaluation of the findings, - to achieve a better visualisation of the findings through the use of suitable software, - to achieve a reduction in the number of acceptance tests. Publication: November 2010 Title and description automatically translated using Deepl API

Ultrasonic testing of forgings with higher requirements, especially for components in turbine and generator systems Publication: February 2009 Title and description automatically translated using Deepl API

Ultrasonic testing of rolled semi-finished products for internal material defects Publication: December 1984 Title and description automatically translated using Deepl API

Non-destructive testing of press-welded tubes made of ferritic steels Publication: September 1994 Title and description automatically translated using Deepl API

Non-destructive testing of fusion-welded ferritic steel pipes Publication: December 1989 Title and description automatically translated using Deepl API

Non-destructive testing of fusion-welded seams in stainless steel pipes Publication: August 1983 Title and description automatically translated using Deepl API

Ultrasonic surface inspection of seamless and longitudinally welded steel pipes with surface waves Publication: September 1997 Title and description automatically translated using Deepl API

Testing the resistance of high-alloy, corrosion-resistant materials to intercrystalline corrosion Publication: July 1994 Title and description automatically translated using Deepl API

Test methods for assessing the corrosion behaviour of steels and non-ferrous alloys in water-hydrogen sulphide-sulphur systems Publication: June 1996 Title and description automatically translated using Deepl API

Testing of welded joints on unalloyed and low-alloy steels for their resistance to stress corrosion cracking Publication: January 1982 Title and description automatically translated using Deepl API

Cyclic corrosion testing of materials and components in automotive engineering Publication: May 2013 Title and description automatically translated using Deepl API

Guidelines for the preparation, performance and evaluation of dilatometric transformation tests on ferrous alloys, 3rd edition, January 2025 Publication: January 2025 Title and description automatically translated using Deepl API

Preparation of time-temperature transformation diagrams for ferrous alloys 4th edition, October 2024 A ZTU diagram provides information about the microstructural development of a steel during processing or heat treatment. This steel-iron test sheet (SEP) contains guidelines for the preparation of such charts. The different types of these charts are described. Specimen selection and preparation, test execution and rules for the presentation of test results are given. Examples of various charts are shown in an appendix. The following significant changes have been made compared to the 3rd edition: This SEP is available in English translation for the first time. Attention has been paid to a clearer presentation, e.g. for teaching purposes. Publication of the 4th edition: October 2024 Title and description automatically translated using Deepl API

Determination of the brittle fracture transition temperature FATT and other characteristic variables Title and description automatically translated using Deepl API

Testing the hardenability of stainless steels with hardness fracture specimens Publication: December 1971 Title and description automatically translated using Deepl API

Determination of formulas by multiple regression to calculate the hardenability in the face quenching test from the chemical composition of steels Publication: June 2004 Title and description automatically translated using Deepl API

Supplement to SEP 1664: Determination of formulae by multiple regression for the calculation of hardenability in the face quenching test from the chemical composition of steels (4th edition) Publication: March 2013 Title and description automatically translated using Deepl API

Microscopic and macroscopic testing of high-speed steels for their carbide distribution with image series Publication: January 1975 Title and description automatically translated using Deepl API

Microscopic testing of hot-work tool steels Publication: September 1996 Title and description automatically translated using Deepl API

Table 2 to SEP 1614 : Guideline series for the evaluation of the microstructure of annealed hot-work tool steel Publication: September 1996 Title and description automatically translated using Deepl API

Table 1 to SEP 1614 : Guideline series for the evaluation of the microstructure of the microhomogeneity of the alloying elements in hot-work tool steel Publication: September 1996 Title and description automatically translated using Deepl API

SEP 1611: Evaluation of the segregation structure of the core zone on continuously cast slabs To calibrate or check the corresponding evaluation software in accordance with Method C, the reference series images listed in Appendix A can be obtained in digital form from the VDEh Steel Institute. Title and description automatically translated using Deepl API

Blue fracture test for testing steels for macroscopic non-metallic inclusions Publication: December 1996 Title and description automatically translated using Deepl API

SEP 1572: Microscopic testing of free-cutting steels for sulphide non-metallic inclusions with image series Publication: 03.2019 Title and description automatically translated using Deepl API

Evaluation of inclusions in stainless steels on the basis of inclusion areas Part 3: Method E Publication: August 2017 Title and description automatically translated using Deepl API

Evaluation of inclusions in stainless steels on the basis of inclusion areas Part 2: Methods and M Publication: August 2017 Title and description automatically translated using Deepl API

Evaluation of inclusions in stainless steels on the basis of inclusion areas Part 1: Fundamentals Publication: August 2017 Title and description automatically translated using Deepl API

Panel/Poster for SEP 1571: Evaluation of inclusions in stainless steels on the basis of inclusion areas Publication: August 2017 Title and description automatically translated using Deepl API

Microscopic examination of carbide formation in steels with image series Publication: September 1998 Title and description automatically translated using Deepl API

Image series panel for SEP 1520 at a scale of 1:1 Please note that the poster of the image series panel for SEP 1520 is only available in our shop as a PDF file. The file is high-resolution and can be printed up to A0 size or viewed on screen. You can obtain the printed poster directly from VDEh: https://vdeh.de/en/standardisation/stahl-eisen-blaetter/

Weld-on bending test Publication: June 1996 Title and description automatically translated using Deepl API

Drop weight test according to W.S. Pellini Publication: December 1982 Title and description automatically translated using Deepl API

Impact bending test, description and sample preparation Publication: April 1990 Title and description automatically translated using Deepl API

Relaxation test at elevated temperature with bolted joint models Publication: May 1996 Title and description automatically translated using Deepl API

SEP 1245: Release process for steel sheet for automotive applications (cold forming), 2nd edition, October 2024 As part of the joint work between the automotive and steel industries, the phases of the material approval process were defined for the introduction of newly developed steel grades into series production in automotive engineering. The material approval process serves to define the necessary qualification steps for steel sheet up to series production readiness. In order to assess new steel grades with regard to their suitability for series use in automotive engineering, a test matrix is specified to determine a broad database. The results of these tests are a necessary prerequisite for the approval of a steel grade by a customer (OEM). The following changes have been made compared to the 1st edition 2011: In addition to the four phases, there is the milestone SST start of series production. Source approval has been added. Publication of the 2nd edition: October 2024 Title and description automatically translated using Deepl API

Determination of the modulus of elasticity of steel materials Publication: September 2012 Title and description automatically translated using Deepl API

Determination of mechanical properties of joined sheet metal materials in the tensile test at high test speeds Publication: August 2013 Title and description automatically translated using Deepl API

Determination of mechanical properties of sheet metal materials at high strain rates in high-speed tensile tests Publication: February 2007 Title and description automatically translated using Deepl API

Testing and documentation guideline for the joining suitability of thin steel sheets Parts 1 - 4 Publication: August 2011 Title and description automatically translated using Deepl API

Testing and documentation guideline for the joining suitability of thin steel sheets Part 5: MAG welding Publication: December 2020 Title and description automatically translated using Deepl API

Test and documentation guideline for the suitability of thin steel sheets for joining - Part 4: MIG brazing Publication: August 2011 Title and description automatically translated using Deepl API

Assessment of the weldability of electrical steel coatings on cold-rolled, non-grain orientated, finally annealed electrical steel sheet and strip using the tungsten inert gas (TIG) welding process Publication: June 1995 Title and description automatically translated using Deepl API

Determination of the influence of welding conditions on the maximum hardness value in the heat-affected zone of welded joints Publication: January 1986 Title and description automatically translated using Deepl API

Determination of the influence of the welding conditions on the toughness in the heat-affected zone of multi-layer joints Publication: January 1986 Title and description automatically translated using Deepl API

Determination of the influence of the welding conditions on the toughness in the heat-affected zone of single-pass welds Publication: January 1986 Title and description automatically translated using Deepl API

Evaluation of weldable corrosion protection primers for the automotive industry - Part 6: Suitability test for cathodic dip coating Publication: November 2005 Title and description automatically translated using Deepl API

Evaluation of weldable corrosion protection primers for the automotive industry - Part 5: Adhesive suitability test Publication: January 2005 Title and description automatically translated using Deepl API

Evaluation of weldable corrosion protection primers for the automotive industry - Part 4: Determination of abrasion behaviour Publication: January 2005 Title and description automatically translated using Deepl API

Evaluation of weldable corrosion protection primers for the automotive industry - Part 3: Adhesion behaviour Publication: November 2005 Title and description automatically translated using Deepl API

Evaluation of weldable corrosion protection primers for the automotive industry - Part 2: Determination of coating thickness by gravimetry Publication: June 2004 Title and description automatically translated using Deepl API

Evaluation of weldable corrosion protection primers for the automotive industry - Part 1: Corrosion protection effect Publication: June 2004 Title and description automatically translated using Deepl API

Evaluation of corrosion protection primers suitable for welding in the automotive industry - Part 7: Method for the quantitative determination of dusts during resistance spot welding Publication: September 2008 Title and description automatically translated using Deepl API

Cold shear strength of long steel products, complete incl. supplements 1-3 Publication: August 2010 Title and description automatically translated using Deepl API

Cold shear strength of long steel products, incl. Supplement 1, classification of steel groups according to their cold shear strength Publication: August 2010 Title and description automatically translated using Deepl API

Cold shear properties of long steel products, Supplement 3: Shear defect catalogue W, material-related causes Publication: August 2010 Title and description automatically translated using Deepl API

Cold shear properties of long steel products, Supplement 2: Shear fault catalogue A, system-related causes Publication: August 2010 Title and description automatically translated using Deepl API