Ti-6Al-4V GR5 Titanium Plate
For Marine Exploration & Offshore Projects

The ultimate high-strength, corrosion-resistant alloy engineered for the world's most demanding subsea and offshore environments — trusted by engineers globally.

ASTM B265 · ISO 9001:2015 Certified · 8,000 Tons/Year Capacity

Ti-6Al-4V GR5 Marine-Grade Titanium Plates

Premium alloy plates engineered for subsea structures, offshore platforms, and deep-sea exploration equipment

Titanium Thick Plate for Offshore Structures

What Is Ti-6Al-4V GR5 Titanium Plate?

Ti-6Al-4V (Grade 5) is the most widely used titanium alloy in the world, accounting for over 50% of all titanium production globally. Composed of 6% aluminum, 4% vanadium, and the balance titanium, this alpha-beta alloy delivers an exceptional combination of high strength, low density, and outstanding corrosion resistance — making it the material of choice for marine exploration and offshore engineering projects.

In offshore and subsea environments, materials must endure relentless exposure to seawater, chloride ions, high pressures, and mechanical fatigue. Ti-6Al-4V GR5 titanium plate answers every one of these demands. Its passive oxide layer provides near-immunity to seawater corrosion, while its tensile strength of approximately 950 MPa rivals many steels at just 60% of the weight.

Manufactured to ASTM B265 standards, ProX Metal's GR5 titanium plates are available in thicknesses from 0.5mm to 75mm, widths up to 3000mm, and custom lengths — ready for the most complex offshore fabrication requirements.

🏆 Why GR5 Dominates Marine & Offshore Applications

No other structural alloy matches Ti-6Al-4V's balance of strength-to-weight ratio, seawater corrosion immunity, and long-term fatigue resistance in demanding offshore environments. It is the benchmark material for subsea structures, ROV frames, and offshore pressure vessels worldwide.

Ti-6Al-4V GR5 Titanium Plate for Marine and Offshore Projects

Ti-6Al-4V GR5 Titanium Plate — Technical Specifications

Precision-manufactured to ASTM B265 and available in a full range of dimensions for offshore and marine fabrication

Parameter	Specification
Grade	Ti-6Al-4V (GR5), Ti-6Al-4V ELI (GR23)
Standard	ASTM B265, AMS 4928, MIL-T-9046
Thickness Range	0.5mm – 75mm (custom available)
Width Range	400mm – 3000mm
Length Range	800mm – 60,000mm
Tensile Strength (UTS)	≥ 950 MPa
Yield Strength (0.2% Offset)	≥ 880 MPa
Elongation	≥ 10%
Density	4.43 g/cm³
Surface Finish	Annealed + Pickled, Hot Rolled Pickled, Cold Rolled Bright, Sandblasted
Condition	Annealed / Solution Treated & Aged
Corrosion Resistance	Excellent in seawater, chloride, and acidic media
Operating Temperature	-200°C to +315°C

Key Performance Advantages for Marine & Offshore Use

Six critical properties that make Ti-6Al-4V GR5 the undisputed choice for subsea and offshore engineering

🌊

Seawater Corrosion Immunity

Ti-6Al-4V forms a stable, self-repairing TiO₂ passive film that provides virtually complete immunity to seawater corrosion, including chloride-induced pitting and crevice corrosion that devastate stainless steels.

⚙️

Exceptional Strength-to-Weight Ratio

With a tensile strength exceeding 950 MPa at only 4.43 g/cm³ density, GR5 titanium delivers steel-class structural performance at 45% less weight — critical for reducing topside loads on offshore platforms and improving ROV buoyancy margins.

🔩

High-Cycle Fatigue Resistance

Offshore structures endure millions of load cycles from wave action, tidal forces, and operational vibration. Ti-6Al-4V's superior fatigue strength ensures structural integrity across decades of service without crack propagation.

🌡️

Wide Temperature Performance

Maintaining mechanical properties from cryogenic deep-sea temperatures (-200°C) to elevated process temperatures (+315°C), GR5 titanium serves equally well in cold-water subsea pipelines and high-temperature offshore process equipment.

🔬

Non-Magnetic & Biofouling Resistant

Titanium's non-magnetic nature is essential for sensitive offshore instrumentation and navigation systems. Additionally, titanium resists marine biofouling far better than most metals, reducing maintenance costs in long-term subsea deployments.

♻️

Long Service Life & Low Lifecycle Cost

While the upfront cost of GR5 titanium exceeds conventional materials, its 30–50 year service life in marine environments, near-zero corrosion maintenance requirements, and full recyclability deliver superior total lifecycle economics for offshore operators.

In-Depth Application Scenarios: Marine Exploration & Offshore Projects

Where Ti-6Al-4V GR5 titanium plate delivers measurable engineering and commercial value across the offshore value chain

🤿 Deep-Sea Submersible & ROV Pressure Housings

Remotely Operated Vehicles (ROVs) and autonomous underwater vehicles (AUVs) operating at depths beyond 6,000 meters require pressure housings that withstand crushing external pressures while minimizing weight. Ti-6Al-4V GR5 plates are machined into pressure-rated enclosures for electronics, sensors, and propulsion systems. Its combination of high yield strength, excellent weldability, and corrosion immunity in abyssal seawater makes it irreplaceable in deep-ocean exploration programs operated by institutions such as NOAA, JAMSTEC, and leading offshore energy companies.

🛢️ Offshore Oil & Gas Platform Structural Components

Fixed offshore platforms, semi-submersibles, and tension-leg platforms require structural components that resist the combined effects of seawater immersion, splash zone corrosion, and cyclic wave loading. GR5 titanium plates are used in riser clamps, caisson liners, conductor guide frames, and splash zone cladding. The weight savings compared to duplex stainless steel translate directly into increased payload capacity and reduced foundation loads — a significant commercial advantage for deepwater platform operators in the Gulf of Mexico, North Sea, and offshore West Africa.

🌬️ Offshore Wind Energy Infrastructure

The rapid global expansion of offshore wind — with installed capacity projected to exceed 380 GW by 2030 — has created massive demand for corrosion-resistant structural materials. Ti-6Al-4V GR5 titanium plates are increasingly specified for monopile transition pieces, inter-array cable protection systems, and subsea junction boxes in aggressive tidal and splash zone environments. Compared to coated carbon steel or super duplex stainless, titanium components in offshore wind foundations require no recoating maintenance over their 25-year operational life, dramatically reducing OPEX for wind farm operators.

🔧 Subsea Pipeline & Riser Systems

Subsea production systems connecting wellheads to floating production units rely on riser systems that must handle high internal pressures, thermal cycling, and external seawater corrosion simultaneously. Ti-6Al-4V titanium is used in flexible riser end fittings, stress joints, and top tension riser (TTR) components. The alloy's high fatigue strength and resistance to hydrogen embrittlement — a critical concern in sour gas (H₂S-containing) production environments — make it the preferred material for riser components in ultra-deepwater fields operating at depths beyond 2,000 meters.

⚓ Naval Vessel & Marine Defense Applications

Naval architects and defense contractors specify Ti-6Al-4V for submarine hull sections, torpedo tube liners, propeller shaft components, and sonar dome structures. The material's non-magnetic properties are critical for mine countermeasure vessels (MCMVs), while its high strength-to-weight ratio enables improved speed and range for naval platforms. Several major naval forces, including the US Navy and Royal Navy, have standardized GR5 titanium for critical structural applications where corrosion failure is not an option.

💧 Offshore Desalination & Water Treatment Systems

Floating production storage and offloading (FPSO) vessels and offshore platforms require onboard water treatment and desalination systems to supply potable water for crews. Multi-stage flash (MSF) and reverse osmosis (RO) desalination plants aboard offshore vessels use Ti-6Al-4V plates for heat exchanger tube sheets, evaporator chambers, and pressure vessel components. Titanium's exceptional resistance to chloride-laden hot brine — the most corrosive condition for most engineering alloys — ensures decades of maintenance-free operation in these critical life-support systems.

🌊 Tidal & Ocean Current Energy Converters

Emerging tidal energy and ocean thermal energy conversion (OTEC) technologies require structural materials that can survive decades of continuous immersion in high-velocity seawater flows with minimal maintenance. Ti-6Al-4V GR5 plates are used in tidal turbine blade structures, nacelle housings, and mooring attachment points. The alloy's resistance to erosion-corrosion in high-velocity seawater flows — a critical failure mode for conventional materials — and its compatibility with advanced composite structures make it the material of choice for next-generation marine renewable energy systems.

🔭 Oceanographic Research & Scientific Instruments

Long-term oceanographic monitoring systems, including Argo profiling floats, deep-sea landers, and ocean bottom seismometers, require structural materials that maintain dimensional stability and corrosion resistance over multi-year deployments without recovery. Ti-6Al-4V GR5 is specified for instrument frames, pressure housing flanges, and acoustic release mechanisms in these high-value scientific assets. Its non-magnetic properties are particularly valuable for electromagnetic measurement instruments, while its biocompatibility ensures it does not contaminate sensitive water chemistry measurements.

Industry Trends: Titanium in Marine & Offshore Markets

The commercial and technological forces driving accelerating adoption of Ti-6Al-4V in offshore applications

📈

Deepwater Expansion Driving Demand

As shallow-water oil and gas reserves deplete, operators are moving to ultra-deepwater fields at 2,000–4,000 meter depths where conventional materials fail. The global deepwater capex is projected to exceed $180 billion through 2030, with titanium content per project increasing as depth requirements intensify. This structural shift is creating sustained long-term demand growth for high-performance titanium alloys like GR5.

🌱

Offshore Wind — The New Titanium Frontier

The offshore wind industry is emerging as one of the fastest-growing end markets for marine-grade titanium. With over 300 GW of new offshore wind capacity planned globally through 2035, and increasing deployment in aggressive tropical and high-salinity environments, the demand for maintenance-free corrosion-resistant materials is accelerating. Titanium is transitioning from a niche to a mainstream specification in offshore wind structural design.

🤖

Autonomous Subsea Systems Revolution

The rapid proliferation of autonomous underwater vehicles (AUVs), inspection drones, and unmanned subsea intervention systems is creating new demand for lightweight, high-strength titanium components. The global AUV market is growing at 15% CAGR, with titanium pressure housings and structural frames representing a critical enabling technology. Weight reduction enabled by titanium directly extends mission endurance and operational depth capability.

🏭

Additive Manufacturing Integration

The integration of Ti-6Al-4V powder with metal additive manufacturing (AM) is revolutionizing the production of complex offshore components. Wire Arc Additive Manufacturing (WAAM) and powder bed fusion technologies now enable the production of large, near-net-shape titanium structural components — reducing material waste by up to 70% compared to machined plate and enabling geometrically complex designs impossible with conventional fabrication.

💰

Total Cost of Ownership Shift

Offshore operators are increasingly evaluating materials on total lifecycle cost rather than upfront material price. When the cost of corrosion maintenance, coating reapplication, component replacement, and production downtime is factored in, titanium's 30–50 year maintenance-free service life in seawater environments delivers a compelling economic case compared to coated carbon steel or duplex stainless alternatives in many offshore applications.

🌐

Asia-Pacific Market Emergence

China, South Korea, and Southeast Asian nations are rapidly expanding their offshore energy and marine research capabilities. China's deep-sea exploration programs, South Korea's offshore wind expansion, and ASEAN nations' offshore oil and gas development are creating new regional demand centers for marine-grade titanium. ProX Metal, with its 8,000-ton annual capacity and established supply chain, is strategically positioned to serve these emerging markets with competitive lead times and pricing.

Main Product Range

We have multiple titanium products for you to choose from — all available for marine and offshore applications

Titanium Sheet / Plate

Titanium Bar / Rods

Titanium Tube / Pipe

See More Products

Industry Applied Titanium Coil Sheet GR1 GR2 for Marine

Grade: GR1, GR2

Standards: ASTM B265

Specifications: δ(0.3-12)mm × W500-2000mm × L

Surface: Cold rolled bright / pickled, Hot rolled pickled, Black oxide

GR1, GR2 Titanium Plate Sheet ASTM B265 for Offshore

Grade: GR1, GR2

Standards: ASTM B265

Specifications: δ(0.3-100mm) × W(400-3000mm) × L(800-20,000mm)

Surface: Cold-rolled bright, acid-washed, sandblasted

Titanium Alloy Thick Plate for Subsea Structures

Grade: GR1, GR2, GR7, GR12

Standards: ASTM B265

Specifications: δ(12-75mm) × W(1500-2500mm) × L(1000-12,000mm)

Custom request size available.

Ti6Al4V GR5 Titanium Plate for Offshore Pressure Vessels

Grade: Ti6Al4V, Ti6Al4V ELI, GR5, GR23

Standards: ASTM B265

Specifications: δ(0.5-75mm) × W(400-3000mm) × L(800-60,000mm)

Available on custom request.

High-Strength Ti-5Al-2.5Sn Titanium Alloy Plate for Marine

Grade: Ti-5Al-2.5Sn

Standard: ASTM B265

Specifications: δ(0.5-50mm) × W(500-1500mm) × L(1000-20,000mm)

Meets customization requests.