Ti Grade 7 — palladium-stabilised titanium. Same strength as Grade 2 + dramatically better crevice corrosion resistance in reducing acids. For chemical plant titanium piping and heat exchangers at higher temperatures than Grade 2.
Ti Grade 7 (ASTM Grade 7 / UNS R52400) per ASTM B265. Pd (0.12-0.25%) addition to commercial-purity titanium extends corrosion resistance to reducing (non-oxidising) environments — Grade 2 requires oxidising conditions for passive film stability. Grade 7 handles reducing HCl and H2SO4 at elevated temperature where Grade 2 corrodes. Identical mechanical properties to Grade 2. Standard for chemical plant titanium piping and heat exchangers in reducing acid service where Grade 2 is insufficient.
| # | Standard Body | Designation | Country / Region | Note |
|---|
No composition data.
No mechanical data.
No physical data.
No heat treatment data.
No machinability data.
No data available.