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Haynes25 (also known as L605, UNS R30605, Werkstoff 2.4964, GH5605) cobalt based high-temperature alloy sheet is a solid solution strengthened deformation high-temperature alloy widely used in extreme high-temperature environments such as aviation, industrial furnaces, and gas turbines.
Haynes25/L605 sheets are commonly available in specifications with thicknesses up to 0.025 mm and conventional thicknesses ranging from 0.5 to 25.4 mm. Cold rolled thin sheets and hot-rolled thick sheets can be provided, and can be cut according to customer requirements. The delivery status is mostly in the solid solution treatment state (2150-2250 ° F/1180-1230 ° C, rapid air cooling or water quenching); Thin plates are quenched in water at 2150 ° F, while thick plates are quenched in water at 2200 ° F; After cold working, it can be annealed in the middle.
The main purpose of Haynes25/L605 solid solution heat treatment is to obtain a uniform austenite structure; This alloy does not rely on aging precipitation strengthening, but rather on the solid solution effect and cold work hardening from W/Cr. Cold work can significantly improve strength (such as tensile strength reaching 1400-1600 MPa after cold deformation of 30%~50%); The intermediate annealing temperature is about 1140 ° C, and rapid cooling is used to avoid phase precipitation.
