Titanium Grade 5 Plates | Ti‑6Al‑4V Strength and Corrosion Resistance for Critical Process & Offshore Assets
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On a floating production facility in West Africa, the topside team had already moved from 316L to commercially pure titanium supports on a seawater‑cooled chemical injection skid, but fatigue checks still showed utilisation edging above 90% on several brackets and base plates as wave loading increased with field expansion. When the structural engineers re‑designed these parts in Titanium Grade 5 Plates (Ti‑6Al‑4V, UNS R56400), finite‑element models showed that switching from a ~350 MPa yield material to plate with minimum yield around 828 MPa and tensile strength from roughly 895 MPa upwards cut peak stresses dramatically while keeping density less than 60% of steel, and inspections after several years in warm seawater and marine atmosphere confirmed clean surfaces without the crevice or pitting damage seen on earlier stainless builds.
Titanium Grade 5 is the classic alpha‑beta titanium alloy Ti‑6Al‑4V, containing about 6% aluminium and 4% vanadium with the balance titanium, and it accounts for a large share of industrial and aerospace titanium usage because it combines very high specific strength with useful toughness and weldability. Plate products are typically identified as UNS R56400 (also written R56400 in many datasheets) with common Werkstoff numbers such as 3.7164 and 3.7165 and are produced to standards like ASTM B265 / ASME SB‑265 Grade 5, AMS 4911 and related aerospace specifications. Typical data for wrought Grade 5 show minimum tensile strength ≈895 MPa, minimum yield strength ≈828 MPa and elongation around 10% in plate and sheet, alongside a modulus of elasticity about 110 GPa roughly half that of steels giving a high strength‑to‑weight ratio and good fatigue behaviour when properly designed.
For procurement heads, design and corrosion engineers, fabricators, OEMs and hardware or industrial supply stores serving chemical, oil & gas, marine, pharma and power‑generation projects, Titanium Grade 5 plates provide a high‑performance step beyond stainless steels, duplexes and even commercially pure titanium when both strength and corrosion resistance matter. Ti‑6Al‑4V’s adherent oxide layer gives it strong resistance in seawater, many chloride solutions, sour and sweet oilfield environments and oxidising chemicals, and research on oil and gas applications has highlighted its performance in downhole and subsea components exposed to CO₂, H₂S and chlorides when suitable metallurgical and design controls are applied.
Aurico Alloys LLP can support such critical duties as an affordable, authentic Titanium Grade 5 Plates supplier, manufacturer and stockist in India with exports abroad, supplying plate in UNS R56400 ranges with ASTM B265 mechanical properties and EN 10204 certification to chemical, oil & gas, marine, pharma and power clients.
High-quality Titanium Grade 5 Plates ready for industrial use.
Specification Overview
| Supplier & Role | Aurico Alloys LLP – Titanium Grade 5 Plates supplier, stockist, exporter in India to abroad |
|---|---|
| Alloy Description | Alpha‑beta titanium alloy Ti‑6Al‑4V (Grade 5), high strength with good toughness and corrosion resistance |
| UNS / Werkstoff / EN | UNS R56400 (commonly written R56400), Werkstoff numbers such as 3.7164 / 3.7165 for plate and forgings |
| Main Plate Standards | ASTM B265 / ASME SB‑265 Grade 5 for strip, sheet and plate; widely aligned with AMS 4911 and similar aerospace specifications |
| Thickness Range | 4.75 mm – 150 mm |
| Service Temperature | Commonly used up to about 315–400 °C in many structural applications, with oxidation resistance to higher temperatures when protected |
| Corrosion Focus | Good to excellent resistance in seawater, marine atmospheres, many chloride solutions and oxidising chemical media, with proper consideration of hydrogen pickup and stress conditions |
| Price | INR 2,500 – 7,500 per kg. Indicative USD 29 – 88 per kg; quoted against grade, form, size and quantity. |
UNS & Equivalent Grades
| Property | Value |
|---|---|
| UNS number | R56400 |
| Werkstoff / EN number | 3.7164 / 3.7165 |
| Density | 4.43 g/cm3 |
| Melting range | 1650 °C |
| Modulus of elasticity | 16 × 10⁶ psi |
| Beta transus | 1800 °F (± 25 °F) |
| Thermal conductivity | 4 Btu/ft·h·°F |
| Coefficient of expansion (32-600 °F) | 5.3 µin/in·°F |
| Plate, sheet and strip specification | ASTM B265 / AMS 4911 |
Identifiers and physical constants for Titanium Grade 5. A dash means no such designation is published for this grade.
How Titanium Grade 5 Compares
| Alloy | Designation | Standards / Numbers | Key Characteristics |
|---|---|---|---|
| Titanium Grade 5 | Ti‑6Al‑4V (Grade 5) | UNS R56400, typical Werkstoff 3.7164 / 3.7165, ASTM B265 Grade 5, AMS 4911 | High‑strength alpha‑beta titanium with good toughness, weldability and corrosion resistance in many industrial and marine environments |
| Ti‑6Al‑4V ELI (for comparison) | Grade 23 | UNS R56407, lower interstitial content for improved toughness and fracture properties | Used where higher fracture toughness is required; Grade 5 remains the main structural workhorse |
| Commercially Pure Titanium (Grades 2–4) | CP Ti Gr 2, 3, 4 | UNS R50400 / R50550 / R50700, ASTM B265 Grades 2–4 | Excellent corrosion resistance but lower strength; Titanium Grade 5 is chosen when much higher strength is required at similar or slightly higher density |
Stock & Product Availability
As a Titanium Grade 5 Plates stockist, Aurico Alloys LLP can provide plate and sheet thicknesses suitable for topside and subsea brackets, base plates, skid frames, heat‑exchanger covers, pressure‑retaining parts and structural panels within the thickness ranges normally covered by ASTM B265 for Grade 5 strip, sheet and plate. Plates are generally supplied in annealed or mill‑annealed condition to achieve the specified minimum yield and tensile strengths with adequate ductility, and cut‑to‑size, profiling and edge preparation help fabricators and OEMs minimize machining time and scrap.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.08 |
| Oxygen (O) | — | 0.20 |
| Nitrogen (N) | — | 0.05 |
| Hydrogen (H) | — | 0.015 (product analysis - ingot analysis for all other elements) |
| Iron (Fe) | — | 0.40 |
| Aluminium (Al) | 5.5 | 6.75 |
| Vanadium (V) | 3.5 | 4.5 |
| Other elements (each) | — | 0.1 |
| Other elements (total) | — | 0.4 |
| Titanium (Ti) | — | Balance (determined by difference) |
Composition limits for Titanium Grade 5. 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, Typical Plate) | Typical Value – Titanium Grade 5 |
|---|---|
| Ultimate Tensile Strength | Minimum ≈895 MPa (130 ksi); many datasheets report ~930–1000 MPa for plate |
| Yield Strength (0.2% offset) | Minimum ≈828 MPa (120 ksi); typical values around 860–900 MPa |
| Elongation | ≈10–14% in 50 mm gauge length for plate products |
| Modulus of Elasticity | ≈110 GPa (≈16 × 10³ ksi) |
| Hardness | ≈34 HRC or ~320 HV in typical mill‑annealed condition |
| Thermal Conductivity | ≈6.7–7.2 W/m·K at room temperature |
| Coefficient of Thermal Expansion | ≈8.6–9.0 × 10⁻⁶ m/m·°C between 20–100 °C |
| Fatigue Performance | High fatigue strength in air and many aqueous environments when surfaces are smooth and design avoids sharp stress raisers |
| Corrosion Behaviour | Good resistance in seawater, many chloride solutions, oxidising acids and sour/sweet oilfield environments, with appropriate controls on hydrogen pickup |
Applications & Benefits
- Chemical & Oil & Gas: Titanium Grade 5 plates are used in offshore and onshore structural components, high‑pressure manifolds, brackets and load‑bearing parts exposed to seawater, chlorides and sour/sweet production fluids, where high strength and corrosion resistance reduce section thickness and weight compared with stainless steels and CP titanium.
- Marine & Power Generation: In marine handling equipment, topside and subsea frames, turbine casings and weight‑critical support structures, Ti‑6Al‑4V offers a strength‑to‑weight ratio that allows lighter designs with good resistance to seawater and spray, improving dynamic performance and fatigue margins versus steel.
- Pharma & High‑Tech Plant: Titanium Grade 5 plate is used in high‑strength hygienic structures, high‑pressure vessels, instrumentation supports and rotating equipment where cleanliness and corrosion resistance are required alongside elevated mechanical properties.
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Conclusion
Titanium Grade 5 Plates from Aurico Alloys LLP, supplied to UNS R56400 ranges and ASTM B265 Grade 5 mechanical requirements, give chemical, oil & gas, marine, pharma and power‑generation users a high‑strength, low‑weight and corrosion‑resistant plate solution that can outperform stainless steels and commercially pure titanium in demanding structural and corrosive environments are your most critical topside, subsea and process assets still relying on heavier, lower‑strength alloys instead of optimised Titanium Grade 5 plates?