Titanium Grade 2: Commercially Pure CP Ti for Corrosion Service
ASTM B265/B348 · Published: 2026-06-01 · Updated: 2026-06-02
Titanium Grade 2 is commercially pure (unalloyed) titanium with 99.2% minimum Ti content. It provides the best combination of moderate strength, excellent formability, and superior corrosion resistance among the four CP titanium grades. The...
Titanium Grade 2 is commercially pure (unalloyed) titanium with 99.2% minimum Ti content. It provides the best combination of moderate strength, excellent formability, and superior corrosion resistance among the four CP titanium grades. The self-healing TiO2 passive film provides immunity to chloride SCC, seawater corrosion (even at high velocity), and oxidizing acids. Standard material for chemical processing heat exchangers, desalination plants, power plant condensers, and medical device housings. Cold-formable with generous bend radii (2-3T) and deep-drawable in the annealed condition. Weldable with matching CP filler under inert gas shielding. Work-hardens less than 300-series stainless, enabling multi-stage cold forming without intermediate annealing.
Quick Facts
| Category | Titanium Alloy |
| Standard | ASTM B265/B348 |
| Density | 4.51 g/cm³ |
| Yield Strength | 275 MPa (40 ksi) annealed |
| Tensile Strength | 345 MPa (50 ksi) annealed |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| EN 3.7035 | Compare |
| BT1-0 | Compare |
| JIS TP340 | Compare |
| TA2 | Compare |
| ISO Ti Grade 2 | Compare |
Related Materials
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Frequently Asked Questions
What is the difference between CP titanium Grade 2 and Grade 4?
Grade 4 is the highest-strength CP grade (480 MPa YS) with 99.0% minimum Ti and controlled oxygen/iron for strengthening. Grade 2 is the most versatile grade—best balance of strength, formability, and weldability. Grade 1 (lowest strength, best formability) is used for deep-drawn components and explosive-clad plate. For strength above Grade 4, use Ti-6Al-4V (Grade 5).
References & International Standards
- ASTM International. Standard Specifications for Steel & Metal Alloys. astm.org
- International Organization for Standardization (ISO). Metallic Materials — Cross-Reference Database. iso.org
- American Iron and Steel Institute (AISI). Steel Grade Designations & Equivalents. steel.org
- European Committee for Standardization (CEN). EN Steel Standards & Numbering System. cencenelec.eu