Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained
US7005017B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Dec 3, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦1.2%; 0.10%≦Mn≦2.0%; 0.10%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦3.5% with Cu≦Ni %+0.6 Si % if Cu≧0.5%; traces≦P≦0.200%, traces≦Bi≦0.200%, traces≦Sn≦0.150%, traces≦As≦0.100%, traces≦Sb≦0.150%, with 0.050%≦P %+Bi %+Sn %+As %+Sb %≦0.200%, traces≦Al≦0.060%; traces≦Ca ≦0.050%; traces≦B≦0.01%; traces≦S≦0.200%; traces≦Te≦0.020%; traces≦Se≦0.040%; traces≦Pb≦0.070%; traces≦Nb≦0.050%; traces≦Ti≦0.050%; the remainder being iron and impurities resulting from the manufacture. The invention also relates to a method of hot-shaping a steel part, wherein:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.