CP Grade 4 (AMS 4901)

With excellent resistance to corrosion and corrosion fatigue, CP Grade 4 offers high mechanical strength with a typical yield strength of 559 MPa. While Grade 4 offers lower toughness despite its higher mechanical strength, the alloy offers good weldability and formability. Hot forming will also improve the overall ductility of the alloy. From a forming perspective, CP Grade 4 is similar to 300 series stainless steel grades. Smiths Advanced Metals stocks CP Grade 4 titanium alloy sheets in the annealed condition and in a broad range of incremental sizes.

Machinability

Titanium has an unfair reputation as being difficult to machine. In reality, this is not the case. As long as the operator adopts good working practices, machining titanium is not the issue purported. As the alloy has low thermal conductivity, high coolant flow is a must, and the material should be cut at low speeds and at reasonably high feed rates. Operators should also use tungsten carbide tooling or cobalt high-speed tools.

Commercial Applications

CP Grade 4 titanium sheet finds use in engineering applications, including oil & gas components, aerospace parts, marine components and pulp & paper production.