Engineering notes on grade selection, corrosion behaviour and purchasing — written from the workshop and the certificate file rather than from a brochure.
Most titanium orders are decided by three questions: which grade, whether it survives the medium, and what exactly goes on the purchase order. The guides below answer those in the detail that usually only surfaces after the PO has been issued — where the money is already committed.
They are written for engineers and buyers who already know the product form they need. Nothing here replaces a specification or a corrosion test, but it should save a round of questions before the enquiry stage.
Composition and minimum mechanical properties for Gr.1 to Gr.12 and Ti-6Al-4V, how the Chinese GB designations line up with ASTM grades, and where that equivalence stops being exact.
Read the guideWhere the oxide film holds and where it breaks down: seawater and chlorides, chlorine and hypochlorite, nitric, sulphuric and hydrochloric acid, plus the temperature limits that matter more than the acid itself.
Read the guideWhat to write on a purchase order so the material arrives as intended — grade and standard, condition, tolerances, EN 10204 3.1 versus 3.2, test reports, marking and packing.
Read the guideThe grade guide is the starting point when a drawing or a datasheet names a material you do not normally buy. The corrosion guide applies when the service medium is aggressive enough that grade choice decides service life. The purchasing guide applies to every order, and is the one worth sending to a colleague who is about to raise the PO.
If a question is not covered, send it with the service conditions — medium, concentration, temperature, pressure and the standard you are working to. We answer technical questions whether or not they turn into an order.
Send the product form, grade, dimensions and destination — we confirm availability, standards and documents before you commit.