Titanium Grade 3 Plates | High-Strength CP Titanium Plates for Demanding Seawater & Chemical Service
Table of Contents:
A coastal chemicals complex had already tried 316L, duplex stainless and even Grade 2 titanium tube sheets in a high-velocity seawater/bleach cooling loop, yet erosion corrosion and occasional pitting at the inlets kept forcing patch repairs and unplanned downtime. When the reliability team upgraded critical tube sheets and channel covers to Titanium Grade 3 Plates (UNS R50550, 3.7055), they gained roughly 20–30% higher yield strength than comparable Grade 2 plate while retaining excellent seawater and oxidising-chemical resistance, and subsequent inspections showed no significant wall loss in areas where stainless and even softer titanium had previously struggled.
Titanium Grade 3 is a commercially pure (CP) titanium with higher oxygen content than Grades 1 and 2, delivering higher mechanical strength while maintaining good ductility, weldability and corrosion resistance in highly oxidising to mildly reducing environments. It is designated UNS R50550 with material number 3.7055 and is covered for sheet and plate by ASTM B265 and ASME SB‑265, which specify composition limits on elements such as nitrogen (≤0.05%), carbon (≤0.08%), oxygen (≤0.35%), iron (≤0.30%) and hydrogen (≤0.015%) to protect its mechanical and corrosion behaviour for pressure and structural service.
For procurement heads, engineers, fabricators, OEMs and hardware or industrial supply stores serving chemical, oil & gas, marine, pharma and power-generation projects, Titanium Grade 3 plates offer a distinct step up from Grade 2 when higher allowable design stresses are needed without moving to expensive alloyed titanium grades. CP Grade 3 combines a density less than 60% that of steel with typical tensile strengths reported near 585–595 MPa and yield strengths around 345–462 MPa in plate, while retaining elongation of about 18–25%, giving an excellent strength-to-weight ratio and good fabrication response.
Aurico Alloys LLP can support such applications as an affordable, authentic Titanium Grade 3 Plates supplier, manufacturer and stockist in India with export capability abroad, delivering plates to UNS R50550 / 3.7055 ranges and ASTM B265 requirements with EN 10204 test certificates for global chemical, oil & gas, marine, pharma and power projects.
High-quality Titanium Grade 3 Plates ready for industrial use.
Specification Overview
| Supplier & Role | Aurico Alloys LLP – Titanium Grade 3 Plates supplier, stockist, exporter in India to abroad |
|---|---|
| Alloy Description | Commercially Pure Titanium Grade 3 (CP Grade 3), higher strength than Grade 1 & 2 with comparable corrosion resistance |
| UNS / Werkstoff / EN | UNS R50550, 3.7055, often noted as Ti Gr 3 or CP Ti 65A in datasheets |
| Primary Plate Standard | ASTM B265 / ASME SB‑265 – Titanium and Titanium Alloy Strip, Sheet and Plate, including Grade 3 unalloyed titanium |
| Service Temperature | Strength usable up to around 400 °F (≈204 °C), with oxidation resistance up to about 600 °F (≈315 °C) in many environments |
| Corrosion Focus | Excellent resistance in highly oxidising to mildly reducing environments, including chlorides, seawater and many chemical media |
| Price | INR 2,000 – 7,500 per kg. Indicative USD 24 – 88 per kg; quoted against grade, form, size and quantity. |
UNS & Equivalent Grades
| Property | Value |
|---|---|
| UNS number | R50550 |
| 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 |
Identifiers and physical constants for Titanium Grade 3. A dash means no such designation is published for this grade.
Stock & Product Availability
As a Titanium Grade 3 Plates stockist, Aurico Alloys LLP can offer plate and sheet thicknesses suited to tube sheets, channel covers, reactor linings, storage tanks, structural panels and ducting in corrosive service, generally within the thickness ranges defined in ASTM B265 for Grade 3 strip, sheet and plate. Plates are usually supplied in annealed condition for a good balance of strength and formability, with cut‑to‑size, bevel cutting and stamping to match fabrication drawings and code requirements.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.08 |
| Oxygen (O) | — | 0.35 |
| Nitrogen (N) | — | 0.05 |
| Hydrogen (H) | — | 0.015 (product analysis - ingot analysis for all other elements) |
| Iron (Fe) | — | 0.30 |
| Other elements (each) | — | 0.1 |
| Other elements (total) | — | 0.4 |
| Titanium (Ti) | — | Balance (determined by difference) |
Composition limits for Titanium Grade 3. 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 3 |
|---|---|
| Ultimate Tensile Strength | Minimum ≈448–585 MPa; typical values around 585–595 MPa in product datasheets |
| Yield Strength (0.2% offset) | Minimum ≈345–379 MPa; typical values around 450–462 MPa |
| Elongation (in 50 mm) | Minimum ≈18%; typical ≈18–25% |
| Modulus of Elasticity | ≈105–110 GPa (about half that of steels) |
| Hardness | Brinell around 200–225 in annealed sheet and plate |
| Thermal Expansion (20–300 °C) | ≈9.5 × 10⁻⁶ m/m·°C |
| Corrosion Behaviour | Excellent resistance in oxidising and mildly reducing media, chlorides, seawater, and good resistance to localised corrosion and SCC due to stable oxide film |
Applications & Benefits
- Chemical & Oil & Gas: Titanium Grade 3 plates are used in heat exchangers, reactors, piping and vessel components where both higher plate strength and excellent corrosion resistance are needed in oxidising acids, chlorides, bleaching solutions and other aggressive media, with performance underpinned by the alloy’s passive oxide layer.
- Marine & Power Generation: In seawater-cooled condensers, offshore structures and high-load marine components, Grade 3’s excellent resistance to seawater corrosion, erosion and galvanic attack, combined with higher strength than Grades 1 and 2, provides longer life and weight reduction compared with stainless alternatives.
- Pharma & High-Purity Systems: Titanium Grade 3 plates offer smooth, corrosion-resistant surfaces and low ion release for equipment where both cleanliness and structural strength are important, such as corrosive waste-handling vessels, heat exchangers and process contact parts.
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 3 Plates from Aurico Alloys LLP, produced to UNS R50550 / 3.7055 chemistry limits and ASTM B265 Grade 3 mechanical property requirements, give chemical, oil & gas, marine, pharma and power-generation users a high-strength, lightweight and highly corrosion-resistant plate solution that often outperforms both softer CP titanium grades and stainless steels in demanding seawater and chemical environments are your most critical condensers, heat exchangers, reactors and structural panels still relying on heavier, lower-strength materials instead of optimised Titanium Grade 3 plates?