Method for manufacturing galvanized steel sheet
US-9677148-B2 · Jun 13, 2017 · US
Non-scaling heat-treatable steel and method for producing a non-scaling component from said steel
US10822681B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10822681-B2 |
| Application number | US-201815958204-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2018 |
| Priority date | Mar 23, 2012 |
| Publication date | Nov 3, 2020 |
| Grant date | Nov 3, 2020 |
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 1. 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. 2. The non-scaling heat treatable steel of claim 1 , wherein Mn+Ni+Cu≥1 weight %. 3. The non-scaling heat treatable steel of claim 1 , wherein Mn+Ni+Cu≥2 weight %. 4. The non-scaling heat treatable steel of claim 1 , wherein Mn+Ni+Cu≥3 weight %.
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Classifications
with more than 1.5% by weight of silicon · CPC title
Hot rolling · CPC title
containing silicon · CPC title
with copper · CPC title
Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material · CPC title
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- What does patent US10822681B2 cover?
- 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 i…
- Who is the assignee on this patent?
- Salzgitter Flachstahl Gmbh
- What technology area does this patent fall under?
- Primary CPC classification C22C38/58. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 03 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).