Titanium Head Of Pressure Vessels

A Titanium head is the end closure component of a pressure vessel, typically made from titanium or one of its alloys. Its main job is to seal the vessel and help it handle internal pressure without failing. Here's a rundown of its key material properties based on real-world use:

• Strength – Depending on the grade (like Grade 5 or Grade 9), tensile strength usually falls between 480 and 900 MPa. Yield strength is also sufficient to prevent permanent deformation under pressure.
• Elongation – Typically around 10–15%, which gives the material some degree of plasticity during forming and under load. This helps lower the risk of brittle fracture.
• Hardness – Generally in the HRC 30–40 range, depending on how it's processed. This improves wear resistance and makes machining easier.
• Corrosion resistance – One of titanium's strong points. It holds up very well against acids, alkalis, and chlorides, and performs reliably in seawater and most chemical environments.
• Weldability – Works well with TIG and arc welding methods, making it easier to fabricate the head and weld it to the rest of the pressure vessel.
• Density – About 4.51 g/cm³, which is roughly 60% that of steel. That means significant weight savings for the overall equipment.
• Thermal stability – Can handle temperatures up to around 300–400°C without losing mechanical properties or suffering from oxidation or degradation.