Cobalt-based alloys introduction
Cobalt-based alloys is commonly known as cobalt-chromium-tungsten alloy or Stellite alloy, which was invented by the American Elwood Hayness in 1907. It features high wear resistance, high corrosion resistance and high-temperature resistance above 800℃, and widely applies in the industries such as petrochemicals, metallurgy, machinery, wood cutting, automobiles, paper-making and food processing.
Cobalt-based alloy is a solid solution of Cobalt and chrome alloy with a face-centered cubic structure as the matrix. Depending on the different contents of W and C, a considerable amount of chromium-rich carbides precipitate on the matrix, thus it has excellent metal-metal abrasion resistance and resistance to abrasive wear. The hardness of the alloy increases with the increase of W and C contents.
Two major categories for Cobalt-based alloy, one is cobalt-chromium-tungsten,another is cobalt-chromium-molybdenum. Cobalt-chromium-tungsten focuses on high-temperature wear resistance, Cobalt-chromium-molybdenum focuses on high-temperature corrosion resistance.
Our new factory-Saint Ocean New Material will be finished construction at end of 2025 with 33000square meters. We will do some new researching and studying works in the field of lost wax investment casting for aluminum alloy and high alloy such as Cobalt-based alloy,Nickel-based alloys, Hastelloy alloys metal casting.
