Hot work tool steel with good temper resistance
US4886640A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Aug 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved hot work tool steel has higher hardness capability and better temper resistance above 1100 F. and better wear resistance than AISI type H13 and better toughness and ductility then AISI type H10 or type H21. The steel alloy contains essentially the following in weight percent: ______________________________________ Carbon 0.55 Max. Manganese 1.5 Max. Silicon 2.0 Max. Chromium 3.5-6.0 Molybdenum 1.5-3.0 Vanadium 0.50-1.50 ______________________________________ and the balance is essentially iron except for the usual impurities found in commerical grades of hot work tool steels. Carbon and chromium are balanced within the composition such that PA1 % carbon.gtoreq.0.098.times.% chromium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.