Light constructional steel and the use thereof
OwnerGeorg Frommeyer, Oliver Grässelinventors
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Abstract
The invention relates to an easily cold-workable, in particular easily deep-drawable ultra high strength austenitic lightweight construction steel with an ultimate tensile strength of up to 1100 MPa and with TRIP and TWIP characteristics, as well as its use for motor vehicle body sheetmetal components, structural components used for stiffening, as well as cryogenic containers and pipelines.
Claims6
Motor vehicle body sheetmetal components and structural body components used for stiffening made from an easily deep-drawable austenitic lightweight construction steel with an ultimate tensile strength of 1100 MPa and with TRIP and TWIP characteristics, made from an alloy consisting of (in mass %):
- 1 to 6% Si
- 1 to 8% Al with (Al+Si)≦12%,
- 10 to 30% Mn,
- remainder iron.
Hot rolled or cold rolled sheets for containers or pipe lines used in the field of cryogenics made from an easily deep-drawable austenitic lightweight construction steel with an ultimate tensile strength of 1100 MPa and with TRIP and TWIP characteristics, made from an alloy consisting of (in mass %):
- 1 to 6% Si
- 1 to 8% Al with (Al+Si)≦12%,
- 10 to 30% Mn,
- remainder iron.
Dependencies are inferred from the claim text.