Steel-iron test sheets (SEP)

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 laser beam brazing. Described are sample preparation, test conditions, the determination of quality levels, test methods (visual testing, tensile testing, metallography) , and documentation of results with example documentation sheets.

SEP 1240 Testing and Documentation Guideline for the Experimental Determination of Mechanical Properties of Steel Sheets for CAE-Calculations, 2nd edition, German version This STAHL-EISEN test specification (SEP) describes selected mechanical tests on thin sheets of steel and their documentation. This SEP is the basis for unified material property determination for CAE calculations and shall standardize the data exchange between test institutes, material suppliers and automotive producers. ∙ General pre-treatment of samples, designation of specimens ∙ General test conditions, test equipment ∙ Elastic and plastic material properties from the tensile test ∙ Plastic material properties from the forming limit curve ∙ Dynamic material properties – high speed tensile testing ∙ Cyclic material properties ∙ Fracture properties for crash and forming simulation The annex contains examples of standardized data files (data header) for all tests, images, tables as well as an example test report. Compared to the 1st edition (2006) numerous changes were carried out, and clause d for crash and forming simulation was supplemented (correlation to SEP 1237). Due to the large extent, the SEP was subdivided into two separate language versions. Publication: January 2026 Language: English

SEP 1240 Testing and Documentation Guideline for the Experimental Determination of Mechanical Properties of Steel Sheets for CAE-Calculations, 2nd edition, German version This STAHL-EISEN test specification (SEP) describes selected mechanical tests on thin sheets of steel and their documentation. This SEP is the basis for unified material property determination for CAE calculations and shall standardize the data exchange between test institutes, material suppliers and automotive producers. ∙ General pre-treatment of samples, designation of specimens ∙ General test conditions, test equipment ∙ Elastic and plastic material properties from the tensile test ∙ Plastic material properties from the forming limit curve ∙ Dynamic material properties – high speed tensile testing ∙ Cyclic material properties ∙ Fracture properties for crash and forming simulation The annex contains examples of standardized data files (data header) for all tests, images, tables as well as an example test report. Compared to the 1st edition (2006) numerous changes were carried out, and clause d for crash and forming simulation was supplemented (correlation to SEP 1237). Due to the large extent, the SEP was subdivided into two separate language versions. Publication: January 2026 Language: German

SEP 1237: Testing and Documentation Guideline for the Experimental Determination of Fracture Properties for Crash and Forming Simulation, 1st Edition This Stahl-Eisen test specification (SEP) specifies experimental tests for determination of the following fracture properties: fracture strain at uniaxial tension (specimens with a hole respective with notches), at plane strain under tension and at biaxial tension. The different test types are described separately and extensively. (SEP 1240 clause 9 contains the condensed version) Publication: January 2026

SEP 1220: Test and documentation guideline for the joinability of thin sheet of steel – Part 6: Adhesive Bonding, 2nd Edition 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 adhesive bonding (with structural adhesives and anti-flutter adhesives). Described are sample preparation, quasi-static lap shear test, undercutting corrosion testing and documentation of results. Significant changes compared to the 1st edition are updating of the reference adhesives and the number of tests of sandwich specimens. Publication: January 2026

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