Co基合金.doc

HAYNES 25 (L605) TECHNICAL DATA Type Analysis | Description | Application | Corrosion Resistance | Heat TreatmentPhysical Properties | Mechanical Properties | Workability Type Analysis Element Min Max Carbon 0.05 0.15 Nickel 9.00 11.0 Iron -- 3.00 Silicon -- 1.00 Manganese 1.00 2.00 Cobalt Balance Chromium 19.0 21.0 Tungsten 14.0 16.0 Phosphorus -- 0.03 Sulfur -- 0.03 Description Haynes 25 is a cobalt-based alloy which combines good formability and excellent high-temperature properties. At 1800°F, Haynes 25 sheet has a 100 hour stress-rupture strength of 7000 psi. The alloy is resistant to oxidation and carburization to 1900°F. Applications Haynes 25 has given good service in many jet engine parts. Some of these include turbine blades, combustion chambers, afterburner parts, and turbine rings. The alloy has also been used successfully in a variety of industrial furnace applications including furnace muffles and liners in critical spots in high temperature kilns. Corrosion Resistance Haynes 25 (L-605) has displayed excellent resistance to the hot corrosive atmospheres encountered in certain jet engine operations. Resistance to oxidation is good for intermittent service up to 1600°F and continuous service up to 2000°F.Haynes 25 (L-605) is highly resistant to scaling and oxidation at elevated temperatures, with particularly good qualities under extreme oxidizing conditions.This material also possesses excellent resistance to chemical oxidizing agents, and extraordianry resistance to hydrochloric and nitric acids at certain concentrations and temperatures. Resistance to salt spray corrosion is very good. Heat Treatment Solution Heat Treated for Best PropertiesFor optimum properties, most wrought products are shipped in the solution heat treated condition. This alloy is normally solution heat treated in the temperature range of 2150 to 2250°F, and then either rapid air-cooled or water-quenched. Sheet 0.025 thick or less is solution