Cobalt Alloy 6, 6B, and 6K are often discussed together, but the grade name alone is not enough to explain their differences. Although they belong to the same cobalt-chromium-tungsten alloy family, their carbon content, production process, product form, and performance characteristics create different application advantages. The correct choice depends not only on wear resistance, but […]
Steam valve seat material selection is not a simple hardness comparison. In power plant steam service, the sealing surface may face temperature, pressure drop, metal-to-metal contact, erosion, galling, thermal cycling, and repair constraints at the same time. That is why engineers often evaluate cobalt-based alloy grades for valve seats, discs, seat rings, wedge sealing faces, […]
