Grade 11 Titanium Alloy | Ti-0.2Pd | UNS R52250 | ASTM B265 / B348 Supplier
Supplied by Huaxiao-Alloy – Your Trusted Global Alloy Partner
1. Grade 11 Titanium Alloy (Ti-0.2Pd) Overview
Grade 11 Titanium Alloy, chemically designated as Ti-0.2Pd, is a palladium-stabilized commercially pure titanium alloy based on Grade 1 titanium, engineered to deliver significantly enhanced corrosion resistance in aggressive chemical environments while retaining excellent ductility, formability, and weldability.
By adding a small but highly effective amount of palladium (0.12–0.25%), Grade 11 dramatically improves resistance to reducing acids, crevice corrosion, and corrosion under low-oxygen or stagnant conditions, where standard commercially pure titanium grades may suffer accelerated attack.
Compared with Grade 7 (Ti-0.2Pd based on Grade 2), Grade 11 offers lower strength but superior formability, making it especially suitable for thin-wall equipment, complex fabricated structures, and welded corrosion-resistant systems.
As a professional Grade 11 titanium alloy supplier, Huaxiao-Alloy supplies UNS R52250 Ti-0.2Pd in full mill product forms, strictly manufactured in accordance with ASTM, ASME, AMS, ISO, EN, and DIN standards, supporting chemical processing, offshore engineering, power generation, and environmental industries worldwide.
2. Equivalent Standards & Designations
Grade 11 titanium alloy is fully standardized and widely accepted in corrosion-critical industries.
| Standard System | Designation |
|---|---|
| ASTM | Grade 11 (Ti-0.2Pd) |
| UNS | R52250 |
| ASME | SB-265 / SB-348 |
| AMS | AMS 4951 (related forms) |
| ISO | ISO 5832 (corrosion service reference) |
| DIN / EN | 3.7225 (industry reference) |
| JIS | Class 11 Titanium |
| GB (China) | TA11 |
➡️ These equivalents allow Grade 11 titanium to be specified seamlessly for global EPC, chemical plant, and offshore projects.
3. Chemical Composition of Grade 11 Titanium Alloy
Grade 11 is essentially Grade 1 commercially pure titanium enhanced with palladium, optimized for corrosion resistance rather than strength.
| Element | Content (%) |
|---|---|
| Titanium (Ti) | Balance |
| Palladium (Pd) | 0.12 – 0.25 |
| Iron (Fe) | ≤ 0.20 |
| Oxygen (O) | ≤ 0.18 |
| Carbon (C) | ≤ 0.08 |
| Nitrogen (N) | ≤ 0.03 |
| Hydrogen (H) | ≤ 0.015 |
Composition Insight
Palladium dramatically improves corrosion resistance in reducing media
Low oxygen ensures maximum ductility and formability
Excellent stability of the passive TiO₂ film
4. Mechanical Properties of Ti-0.2Pd (Grade 11)
4.1 Mechanical Properties at Room Temperature (Annealed)
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 240 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 24% |
| Hardness | ~ 120 HB |
| Density | 4.51 g/cm³ |
| Elastic Modulus | ~105 GPa |
4.2 Mechanical Characteristics
Lowest strength among Pd-alloyed titanium grades
Outstanding ductility and toughness
Ideal for deep drawing, rolling, and complex fabrication
Not intended for high-load structural applications
5. Key Features & Advantages of Grade 11 Titanium Alloy
5.1 Exceptional Corrosion Resistance in Reducing Environments
Grade 11 exhibits dramatically improved corrosion resistance compared with Grade 1, especially in:
Dilute and moderately concentrated sulfuric acid
Hydrochloric acid (controlled conditions)
Mixed acid systems
Low-pH and oxygen-depleted environments
➡️ Often selected as a cost-effective alternative to nickel alloys.
5.2 Superior Resistance to Crevice & Localized Corrosion
Palladium lowers hydrogen overpotential
Accelerates repassivation of the oxide layer
Excellent performance in:
Gasketed joints
Flanged connections
Heat exchanger tube sheets
5.3 Outstanding Formability & Fabrication
Excellent cold forming performance
Suitable for:
Deep drawing
Bending
Rolling
Minimal springback compared with higher-strength alloys
5.4 Excellent Weldability
Weldability comparable to Grade 1
Weld zones retain corrosion resistance
No post-weld heat treatment required in most cases
6. Available Product Forms from Huaxiao-Alloy
Huaxiao-Alloy supplies Grade 11 Ti-0.2Pd in a complete range of mill and fabricated products.
6.1 Titanium Sheets & Plates
Standard: ASTM B265 / ASME SB-265
Thickness: 0.4 mm – 50 mm
Surface: Pickled, annealed
6.2 Titanium Pipes & Tubes
Standard: ASTM B861 / B338
Seamless & welded
OD: 6 mm – 219 mm
Excellent for corrosion-resistant piping
6.3 Titanium Bars & Rods
Standard: ASTM B348
Round, square, flat
Hot-rolled or cold-drawn
6.4 Titanium Wire & Strip
Diameter: 0.2 mm – 6.0 mm
For fasteners, cladding, and welding wire
6.5 Titanium Forgings & Custom Fabrication
Tube sheets
Flanges
Pressure vessel components
OEM machining per drawing
7. Typical Applications of Grade 11 Titanium Alloy
7.1 Chemical Processing Industry
Heat exchangers
Reactors
Acid handling equipment
Condensers
7.2 Oil, Gas & Offshore Engineering
Seawater piping systems
Offshore platform components
Corrosion-resistant fasteners
7.3 Power Generation & Desalination
Condenser tubing
Brine heaters
Evaporators
7.4 Pulp & Paper Industry
Bleaching equipment
Chloride-rich process systems
7.5 Environmental & Pollution Control
Scrubbers
Waste treatment systems
Acid recovery units
8. Corrosion Resistance Performance (Detailed)
8.1 Acid Resistance Comparison
| Medium | Grade 1 | Grade 11 |
|---|---|---|
| Dilute H₂SO₄ | Moderate | Excellent |
| Dilute HCl | Poor | Good |
| Nitric Acid | Excellent | Excellent |
| Chlorides | Excellent | Excellent |
8.2 Why Palladium Is Effective
Acts as a noble metal catalyst
Reduces hydrogen absorption
Stabilizes the passive oxide film
Prevents localized corrosion initiation
9. Fabrication, Machining & Welding Guide
9.1 Forming
Outstanding cold formability
Ideal for thin-wall components
Very low springback
9.2 Machining
Similar to Grade 1 titanium
Low cutting speeds recommended
Sharp tools and adequate cooling essential
9.3 Welding
TIG, MIG, plasma welding recommended
Full inert gas shielding required
Welds retain full corrosion resistance
10. Heat Resistance & Thermal Properties
Maximum service temperature: ~300°C (corrosion service)
Excellent thermal stability
Low thermal expansion
Not intended for high-load high-temperature use
11. Comparison: Grade 11 vs Grade 7 Titanium Alloy
| Property | Grade 11 | Grade 7 |
|---|---|---|
| Base Grade | Grade 1 | Grade 2 |
| Strength | Lower | Higher |
| Formability | Excellent | Very Good |
| Corrosion Resistance | Excellent | Excellent |
| Cost | Lower | Higher |
| Typical Use | Thin-wall fabrication | Structural corrosion service |
12. Quality Assurance & Certifications
All Grade 11 titanium supplied by Huaxiao-Alloy includes:
EN 10204 3.1 / 3.2 Mill Test Certificate
Full chemical & mechanical analysis
PMI testing available
Ultrasonic & eddy current inspection
ISO 9001 quality system
Complete heat number traceability
13. Why Choose Huaxiao-Alloy as Your Grade 11 Titanium Supplier?
✅ Strong expertise in corrosion-resistant titanium
✅ Long-term supply to chemical & offshore projects
✅ Full product range & custom fabrication
✅ Competitive pricing vs nickel alloys
✅ Reliable global logistics
✅ Professional export documentation support
Grade 11 contains palladium, offering far superior corrosion resistance.
Grade 11 is more formable; Grade 7 is stronger.
Yes, performance in seawater is excellent.
Yes, weldability is excellent with proper shielding.
In many chemical environments, yes—at lower lifecycle cost.
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