Ti Grade 12
Titanium alloy with 0.3% Mo + 0.8% Ni — improved crevice and reducing-acid corrosion resistance over CP grades. Strength similar to Grade 2 but much better in chemical environments containing hot brines and reducing acids. More cost-effective than Grade 7 (Pd). Used for heat exchangers, pressure vessels, and chemical processing equipment in corrosive service.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM Grade 12 / UNS R53400 | R53400 | REF |
Sources: ASTM B265
Chemical composition comparison (wt%)
Side-by-side: Ti Grade 12 (ASTM B265) vs ASTM (ASTM B265)
| Element | Ti Grade 12 (ASTM B265) | ASTM | Overlap |
|---|---|---|---|
| C | — | 0–0.08% | — |
| Mo | — | 0.2–0.4% | — |
Mechanical properties
Related materials
Ti-6Al-4V (Grade 5)
3.7164The most widely used titanium alloy — accounts for ~50% of all titanium production. Alpha-beta alloy with exceptional strength-to-weight ratio. Used for jet engine components, airframe structures, medical implants (hip/knee), fasteners, and racing components. Biocompatible.
Titanium Grade 2 (CP)
3.7035The workhorse commercially pure titanium grade. Best balance of strength, ductility, and corrosion resistance among CP grades. Excellent resistance to seawater, chlorides, and oxidizing acids. Used for heat exchangers, chemical processing, marine hardware, desalination, and medical implants.
Titanium Grade 1
3.7025The softest and most ductile commercially pure titanium grade. Lowest O content (0.18% max) for maximum formability. Used for plate heat exchangers, chemical plant vessels, explosive cladding, deep-drawn parts, and anodizing applications. Lower strength than Grade 2 but superior formability.
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