Steel composition
US6299833A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 31, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | May 31, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The application describes a steel composition consisting essentially of PA1 Carbon 0.50-0.70 weight % PA1 Silicon up to 0.40 weight % PA1 Manganese 0.55-1.00 weight % PA1 Phosphorus 0.030-0.070 weight % PA1 Sulphur 0.055 to 0.110 weight % PA1 Chromium up to 0.50 weight % PA1 Molybdenum up to 0.10 weight % PA1 Nickel up to 0.5 weight % PA1 Copper up to 0.50 weight % PA1 Aluminium up to 0.050 weight % PA1 Optionally, Vanadium sufficient to maintain yield strength PA1 Nitrogen up to 0.030 weight %, together with, optionally, lead up to 0.4 weight %, and unavoidable impurities, the balance being iron. This steel composition exhibits mechanical properties which are suitable for use in connecting rods but which provide both good fracture splitting performance and good machinability when compared to C70S6 alloys. The application also refers to a fracture splittable steel including between 0.50 to 0.70 wt % C, 0.55 to 1.00 wt % Mn, 0.030 to 0.070 wt % P and 0.055 to 0.110 wt % S, and with an elongation of 25% or less, a reduction of area below 25%, and a V.sub.20 machinability (m/min) satisfying the equation: EQU V.sub.20.gtoreq.80-0.2H where H is the HV30 hardness of the steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.