Thyssenkrupp Rasselstein Gmbh

Thyssen Krupp Ag

Thyssenkrupp Rasseistein Gmbh

Blaise Massicot

Burkhard Kaup

Luisa-Marie Heine

Reiner Sauer

Dirk Matusch

Chrysanthus Kiewitz

Manuel Kohl

Manuel Köhl

Ricarda Klemmer

A packaging sheet metal product from a cold-rolled steel sheet with a thickness of less than 0.6 mm has a specified composition. The packaging sheet metal product during biaxial deformation in a bulge test has a lower yield strength (Sb) of more than 300 MPa and a corresponding elongation at break (Ab) of more than 10% and in the plastic region between the L&#xfc;ders elongation (Ab) and an upper (plastic) elongation limit of &#x3b5;=0.5&#xb7;Ab&#xb7;(Sb/Sb) has a biaxial stress/strain diagram &#x3c3;(&#x3b5;) that can be represented by a function &#x3b5;=b&#xb7;&#x3b5;, with: &#x3c3;is the true biaxial stress in MPa; &#x3b5; is the amount of true elongation in the thickness direction in %; Sbis the absolute strength; b is a proportionality factor; and n is a strain-hardening exponent. A strengthening of the packaging sheet product in the thickness direction is characterized by a strain-hardening exponent of n&#x2265;0.353-5.1&#xb7;Sb/10MPa.

Packaging sheet metal product

A cold-rolled flat steel product for packaging materials has a thickness of less than 0.6 mm, which has been cold-rolled from steel along a rolling direction (0&#xb0;) and which has an excellent isotropy with respect to its mechanical properties.

Cold-rolled flat steel product for packaging materials

A nitrided packaging steel in the form of a flat steel product and method for producing a nitrided packaging steel with a carbon content of 10-1000 ppm and uncombined nitrogen, dissolved in the steel, of more than 100 ppm. The nitriding is performed in two stages: a first stage, in which a molten steel is nitrided to a nitrogen content of at most 160 ppm by introducing a nitrogen-containing gas and/or a nitrogen-containing solid into the molten steel, and a second stage, in which a flat steel product produced from the nitrided molten steel by cold rolling is treated with a nitrogen-containing gas in order to increase further the amount of uncombined nitrogen in the flat steel product.

Method for producing a nitrided packaging steel

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Burgbrohl, Germany

Blaise Massicot