As we all know, stellite is a hard alloy that is resistant to all types of wear and corrosion and high temperature oxidation. Known as the cobalt-chromium-tungsten (molybdenum) alloy or the cobalt-based alloy .Stellite alloy is a kind of alloy containing cobalt as a main component, containing a considerable amount of nickel, chromium, tungsten .

There are many models of Stellite alloys. Such as Stellite1，Stellite4，Stellite6，Stellite12，Stellite20 and so on.

Among them ,stellite 6 is one kind of the most widely used cobalt-based alloy with good overall performance. It has excellent resistance to a wide range of mechanical and chemical degradation over a wide temperature range and maintains reasonable hardness up to 800 ° C (1470 ° F). Special properties are its excellent self-assembling anti-wear properties (resulting in its wide use as a seat material), its high temperature hardness, and its high impact and cavitation corrosion resistance.

This alloy is ideal for a variety of surface hardening processes. It has a lower tendency to crack than Stellite 12 in multiple layers, but is more resistant to wear and metal to metal or wear conditions. It can be rotated with a carbide tool. Stellite 6 is used for seat and gate; pump shaft and bearing, anti-corrosion cover and rolling coupling. It is often used for self-coordination.

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