Hayness188 cobalt-based alloy rod, mainly composed of cobalt-nickel-chromium-tungsten elements, is a high-strength and oxidation-resistant high-temperature alloy.

Hayness188 Alloy Performance

The alloy has excellent corrosion resistance, thermal stability, and very good resistance to sulfurization at high temperatures. Solid solution strengthening tungsten is added to it, while a relatively high content of chromium and trace amounts of lanthanum are added to give the alloy good high-temperature oxidation resistance. performance. It can be suitable for manufacturing aeroengine parts that require high strength below 980°C and oxidation resistance below 1100°C.

Hayness188 Alloy Chemical Elements

Hayness188 Alloy Mechanical Properties

• Yield Strength:446MPa
• tensile strength:963MPa
• Elongation :55%
• hardness:32.1

Hayness188 Alloy Heat Treatment

Hayness188 alloy has good processing characteristics. Can be forged and hot processed. Hot working is carried out at 1175°C for a long enough time that Hayness 188 alloy can be cold worked because the material is very ductile. Because this alloy has the characteristics of rapid cold work hardening, multiple inter-process annealing treatments are required when processing complex parts. Whether it is hot or cold processed parts, they need to be annealed and cooled quickly to restore the properties of the material.

Application of Hayness188 alloy

This alloy is mainly used in aerospace gas turbines, combustion chambers, blades, and heat exchangers.