Non-scaling heat-treatable steel and method for producing a non-scaling component from said steel
AssigneeSalzgitter Flachstahl GmbH
InventorsJoachim Schöttler, Friedrich Luther, Stefan Mütze
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Abstract
A non-scaling heat-treatable steel with particular suitability for producing hardened or die-hardened components is disclosed, characterized by the following chemical composition in % by weight: C 0.04-0.50; Mn 0.5-6.0; Al 0.5-3.0; Si 0.05-3.0; Cr 0.05-3.0; Ni less than 3.0; Cu less than 3.0; Ti 0.0104-≤0.050; B 0.0015-≤40.0040; P less than 0.10; S less than 0.05; N less than 0.020; remainder iron and unavoidable impurities. Further disclosed is a method for producing a non-scaling hardened component from the steel and a method for producing a hot strip from a steel.
Claims4
A non-scaling heat treatable steel, comprising a following chemical composition in weight %:
- C:
- 0.04-0.50
- Mn:
- 0.5-6.0
- Al:
- 0.5 to 3.0
- Si:
- 0.05-3.0
- Cr:
- 0.05-3.0
- Ni:
- less than 3.0
- Cu:
- >1.2-<3.0
- Ti:
- 0.010-≤0.050
- B:
- 0.0015-≤0.0040
- P:
- less than 0.10
- S:
- less than 0.05
- N:
- less than 0.020
- remainder iron and unavoidable impurities,
- wherein a total content of aluminum, silicon and chromium is at least 3 weight % to inhibit scaling,
- wherein said non-scaling heat treatable steel has no coating for oxidation or scaling protection prior to heating or forming.
Dependencies are inferred from the claim text.