Austenite steel, and austenite steel casting using same
US10415423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 11, 2016 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Dec 2, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/171
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided herein are an austenite steel that satisfies desirable strength and desirable castability at the same time, and an austenite steel casting using same. The austenite steel according to an embodiment of the present invention contains Ni: 25 to 50%, Nb: 3.8 to 6.0%, Zr: 0.5% or less, B: 0.001 to 0.05%, Cr: 12 to 25%, Ti: 1.6% or less, Mo: 4.8% or less, and W: 5.2% or less in mass %, and the balance Fe and unavoidable impurities, wherein the parameter Ps represented by the following formula (1) satisfies Ps≤38, Ps=8.3[Nb]−7.5[Ti]+2.4[Mo]+3.5[W] formula (1), where [Nb], [Ti], [Mo], and [W] represent the contents of Nb, Ti, Mo, and W, respectively, in mass %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.