Titanium Grade 11 Plates | Ti‑0.15Pd Alloy for Harsh Acids, Chlorides & Seawater
Table of Contents:
- What is Titanium Grade 11 Plates?
- Size Range and Standard Specifications
- Equivalent Grades & Designations
- How Titanium Grade 11 Compares
- Stock & Availability
- Chemical Composition
- Mechanical Properties
- Common Applications & Uses
- Frequently Searched Terms
- Global Export Countries
- Key Supply Destinations
A coastal acid‑manufacturing plant had already moved its scrubber shells and ducts from 316L to commercially pure titanium, yet every annual shutdown the inspection reports came back with the same bad news: deep crevice attack and local thinning in the tight gasket faces of the hydrochloric acid absorber and hot brine headers. When the corrosion team rebuilt the most critical liners, tube sheets and flange rings in Titanium Grade 11 Plates (Ti‑0.15Pd, UNS R52250), corrosion logs showed that where plain titanium had suffered measurable loss, the palladium‑modified plates remained essentially intact in reducing acids and chloride‑rich pockets, and after several campaigns the plant had cut unplanned repairs in those circuits to almost zero.
Titanium Grade 11 is a commercially pure titanium alloyed with a small addition of palladium—typically 0.12–0.25% by weight—designated Ti‑0.15Pd and classified under UNS R52250. This grade retains the very high ductility, impact toughness and useful strength of low‑strength CP titanium (similar to Grade 1 and Grade 2), but the noble‑metal palladium addition promotes rapid repassivation of the oxide film, giving significantly improved resistance to reducing acids and to crevice and pitting corrosion in chloride‑rich media.
For procurement heads, corrosion engineers, fabricators, OEMs and hardware or industrial supply stores serving chemical, oil & gas, marine, pharma and power generation, Titanium Grade 11 plates offer a way to keep the formability and weldability of very soft CP titanium while opening up applications where Grade 2 alone is marginal. Industry data on titanium in water and seawater show that unalloyed grades already provide negligible corrosion rates in most natural waters and steam, and work comparing titanium alloys notes that palladium‑bearing grades such as 7 and 11 push useful ranges in hydrochloric and phosphoric acids much further than non‑alloyed grades, especially in crevices and at higher temperatures.
Aurico Alloys LLP can support these duties as an affordable, authentic Titanium Grade 11 Plates supplier, manufacturer and stockist in India with exports abroad, providing plate to UNS R52250 / 3.7225 ranges with ASTM B265 Grade 11 mechanical requirements and EN 10204 certification for EPC, OEM and maintenance projects worldwide.
High-quality Titanium Grade 11 Plates ready for industrial use.
Specification Overview
| Supplier & Role | Aurico Alloys LLP – Titanium Grade 11 Plates supplier, stockist, exporter in India to abroad |
|---|---|
| Alloy Description | Commercially pure titanium with 0.12–0.25% palladium (Ti‑0.15Pd), designed for superior corrosion resistance in reducing and chloride environments |
| UNS / Werkstoff / EN | UNS R52250, typically associated with material number 3.7225 for wrought products |
| Main Plate Standards | ASTM B265 / ASME SB‑265 Grade 11 for strip, sheet and plate; defined in the standard as unalloyed titanium plus 0.12–0.25% Pd |
| Thickness Range | 4.75 mm – 150 mm |
| Corrosion Focus | Enhanced resistance to reducing acids, crevice and pitting attack in chloride media, and strong performance in seawater and many industrial waters, compared with non‑Pd grades |
UNS & Equivalent Grades
| Property | Value |
|---|---|
| UNS number | R52250 |
| Density | 4.51 g/cm3 |
| Melting range | 1650 °C |
| Modulus of elasticity | 15 × 10⁶ psi |
| Beta transus | 1635-1735 °F (ATI range for grades 1-4 7 11 12 and 16-18 (± 25 °F)) |
| Thermal conductivity | 13-10 Btu/ft·h·°F (ATI range for grades 1-4 7 11 12 and 16-18) |
| Coefficient of expansion (32-600 °F) | 5.1 µin/in·°F |
| Plate, sheet and strip specification | ASTM B265 |
Identifiers and physical constants for Titanium Grade 11. A dash means no such designation is published for this grade.
How Titanium Grade 11 Compares
| Alloy | Designation | Standards / Numbers | Key Characteristics |
|---|---|---|---|
| Titanium Grade 11 | Ti‑0.15Pd | UNS R52250, ~3.7225, ASTM B265 Grade 11 | Very ductile CP titanium with small Pd addition for superior resistance in reducing acids and chloride crevice conditions |
| Titanium Grade 7 (comparison) | Ti‑0.15Pd (higher‑strength base) | UNS R52400, 3.7235, ASTM B265 Grade 7 | Pd‑modified titanium with somewhat higher strength; often favoured where slightly higher mechanical properties are required in similar corrosive environments |
| Titanium Grade 2 (comparison) | CP Ti Grade 2 | UNS R50400, 3.7035, ASTM B265 Grade 2 | Good seawater resistance but lower resistance to reducing acids and crevice corrosion than Pd‑bearing grades such as 7 and 11 |
Stock & Product Availability
As a Titanium Grade 11 Plates stockist, Aurico Alloys LLP can supply plate and sheet thicknesses suitable for absorber linings, scrubber shells, tube sheets, channel covers, hot brine boxes and structural plates in chemical, oil & gas, marine, pharma and power‑generation service, within the ranges specified for Grade 11 strip, sheet and plate in ASTM B265. Plates are commonly delivered in annealed condition for maximum ductility and formability, and services such as cut‑to‑size, contour cutting and prepared edges help fabricators and OEMs minimise machining and fit‑up time while maintaining full heat‑number traceability.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.08 |
| Oxygen (O) | — | 0.18 |
| Nitrogen (N) | — | 0.03 |
| Hydrogen (H) | — | 0.015 (product analysis - ingot analysis for all other elements) |
| Iron (Fe) | — | 0.20 |
| Palladium (Pd) | 0.12 | 0.25 |
| Other elements (each) | — | 0.1 |
| Other elements (total) | — | 0.4 |
| Titanium (Ti) | — | Balance (determined by difference) |
Composition limits for Titanium Grade 11. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property (Room Temperature, Annealed Plate) | Typical Value – Titanium Grade 11 |
|---|---|
| Ultimate Tensile Strength | Similar to low‑strength CP grades, often cited in the 240–380 MPa range depending on product and condition, comparable to Grade 1/2 levels |
| Yield Strength (0.2% offset) | Comparable to Grade 1/2 titanium, with typical values around 170–275 MPa |
| Elongation | High ductility, with elongation commonly around 20–30% in 50 mm gauge length |
| Modulus of Elasticity | ≈105–110 GPa, similar to other CP titanium grades |
| Impact Toughness | Described as high‑impact toughness with excellent cold formability and weldability |
| Corrosion Behaviour | Outstanding resistance to reducing acids and chloride environments due to Pd‑enhanced repassivation; superior to non‑alloyed grades in hot HCl and H₂SO₄ and strong performance in seawater and industrial waters |
Applications & Benefits
- Chemical & Oil & Gas: Titanium Grade 11 plates are used in scrubbers, absorbers, column internals, tube sheets, channel covers and linings in systems handling hydrochloric, sulphuric and mixed acids, where Pd‑modified titanium outperforms Grade 2 and many stainless steels in crevices and reducing conditions.
- Marine & Power Generation: In hot seawater, brine, flue‑gas desulfurization and once‑through cooling circuits, Ti‑0.15Pd plate maintains negligible corrosion and resists crevice attack at higher chloride contents and temperatures than unalloyed titanium, extending life of tube sheets, waterboxes and structural plates.
- Pharma & High‑Purity Plant: Grade 11 is selected for high‑purity systems, waste‑treatment and scrubber equipment where reducing acid cleaning cycles, chlorides and tight crevices must be handled without compromising low contamination or weldability.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Titanium Grade 11 Plates from Aurico Alloys LLP, supplied to UNS R52250 / 3.7225 chemistry limits and ASTM B265 Grade 11 mechanical requirements, give chemical, oil & gas, marine, pharma and power‑generation users a palladium‑modified titanium plate option that combines the ductility and weldability of commercially pure titanium with markedly better resistance to reducing acids, chlorides and crevice conditions are your most critical scrubbers, absorbers, brine circuits and seawater‑exposed assets still relying on less resistant materials instead of optimised Titanium Grade 11 plates?