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Core product series for marine exploration and offshore welding applications
Ti64 welding wire — formally designated as Ti-6Al-4V or ASTM Grade 5 — is the world's most widely used titanium alloy. When drawn to a precise diameter of 1.4mm, it becomes an exceptionally versatile filler material for TIG (GTAW) and plasma arc welding processes applied in marine exploration vessels, offshore oil and gas platforms, subsea pipelines, desalination plants, and deep-sea research equipment.
The 1.4mm diameter strikes a critical engineering balance: fine enough to deliver low heat input and precise bead geometry for thin-wall components, yet robust enough to maintain consistent wire feed and deposition rates for structural welds in heavy marine fabrication. Compared to 1.2mm or 1.6mm variants, the 1.4mm gauge is increasingly specified by offshore engineering contractors as the default diameter for general-purpose titanium welding in saltwater environments.
| Parameter | Specification |
|---|---|
| Alloy Designation | Ti-6Al-4V / Ti64 / Grade 5 / ERTi-5 |
| Wire Diameter | 1.4mm (±0.01mm tolerance) |
| Applicable Standard | AWS A5.16 / AMS 4954 / ISO 24034 |
| Tensile Strength (deposited) | ≥ 895 MPa (130 ksi) |
| Yield Strength (0.2% offset) | ≥ 828 MPa (120 ksi) |
| Elongation | ≥ 10% |
| Al Content | 5.50 – 6.75% |
| V Content | 3.50 – 4.50% |
| Fe (max) | 0.30% |
| O (max) | 0.20% |
| N (max) | 0.05% |
| Surface Condition | Bright, clean, oxide-free; vacuum-sealed packaging |
| Spool / Cut Length | Straight cut rods 500–1000mm; spooled 5kg / 15kg |
| Welding Process | GTAW (TIG), PAW, Laser Welding |
Offshore welding engineers consistently select 1.4mm Ti64 wire for several practical reasons. The diameter provides excellent arc stability when used with standard TIG torches at currents between 80–180A, covering the majority of structural titanium welding scenarios encountered on platforms and vessels. The wire's mass-to-surface-area ratio minimizes oxide contamination risk during the critical moment of wire introduction into the weld pool — a particularly important consideration when welding in open-deck conditions where full inert gas shielding (argon 99.999% purity) must cover both the weld pool and the wire tip simultaneously.
Furthermore, the 1.4mm gauge is compatible with automated orbital welding systems increasingly deployed for subsea pipeline girth welds, enabling consistent, inspector-qualified welds in confined spaces where manual access is impossible.
Why Ti64 1.4mm welding wire outperforms alternatives in marine and offshore environments
Ti64 forms a tenacious, self-healing TiO₂ passive film that provides complete resistance to seawater corrosion at all depths and temperatures. Weld joints made with Ti64 1.4mm wire exhibit corrosion rates below 0.001 mm/year — orders of magnitude better than 316L stainless steel in chloride-rich environments.
With a density of only 4.43 g/cm³ (56% of steel) and tensile strength exceeding 895 MPa, Ti64 weld deposits allow offshore structures to be designed lighter without sacrificing structural integrity — critical for floating platforms, subsea modules, and ROV components where weight directly impacts operational cost.
Ti64 retains mechanical integrity from cryogenic temperatures (−196°C for LNG applications) up to 315°C continuous service. This makes Ti64 1.4mm welding wire equally suitable for Arctic offshore projects and tropical subsea heat exchanger fabrication.
The 1.4mm diameter delivers smooth, spatter-free arc characteristics in GTAW processes. The wire's controlled interstitial element content (low O, N, H) ensures weld metal toughness and ductility meeting DNV-GL and ABS certification requirements for offshore structural welds.
Each production batch is accompanied by Mill Test Reports (MTR) conforming to EN 10204 3.1 / 3.2. Chemical analysis by ICP-OES and mechanical testing per AWS A5.16 / AMS 4954 are performed for every lot, supporting DNV, Bureau Veritas, Lloyd's Register, and ABS project certification.
Wire is vacuum-sealed in moisture-barrier foil with desiccant, then packed in rigid cases suitable for offshore logistics, helicopter transport, and storage in humid marine environments. Shelf life exceeds 24 months when stored per AWS A5.16 guidelines.
Deepwater oil and gas production relies on titanium risers and flowlines where the combination of high pressure, low temperature, and aggressive produced fluids creates an environment that destroys conventional alloy steel within years. Ti64 1.4mm wire is used for orbital GTAW girth welds on titanium flexible riser end fittings, stress joints, and titanium-lined pipe spool joints. Projects in the Gulf of Mexico, North Sea, and offshore Brazil have adopted Ti64 welding wire as the standard filler for these critical connections.
Seawater-cooled heat exchangers on FPSOs and fixed platforms are among the most corrosion-challenged components in offshore operations. Ti64 1.4mm welding wire is used to weld tube-to-tubesheet joints and shell flanges in titanium heat exchanger bundles. The resulting weld joints match the corrosion performance of the parent titanium tube material, eliminating the galvanic corrosion failure modes common at dissimilar metal interfaces.
Manned submersibles (HOVs) and remotely operated vehicles (ROVs) deployed for ocean floor exploration at depths exceeding 6,000 meters require pressure housings and structural frames that combine extreme strength with minimal weight. Ti64 1.4mm wire is the standard filler for welding titanium pressure spheres, syntactic foam frames, and manipulator arm structures used in deep-sea research programs including those operated by JAMSTEC, WHOI, and commercial deep-sea mining survey companies.
Floating desalination units and barge-mounted SWRO plants represent one of the fastest-growing segments in offshore infrastructure. Titanium is the material of choice for high-pressure membrane housings, brine discharge headers, and seawater intake manifolds. Ti64 1.4mm welding wire provides the weld strength and corrosion resistance required for these pressure-boundary components, which must perform reliably for 25+ year design lives without inspection access.
Offshore wind turbine foundations, tidal energy converter frames, and wave energy device mooring systems increasingly incorporate titanium components at the seawater interface. Ti64 1.4mm wire is used for welding titanium J-tube guide structures, cable protection systems, and sacrificial anode support frames. As the offshore wind sector expands into deeper waters with floating foundations, demand for Ti64 welding wire in this segment is projected to grow significantly through 2030.
Defense naval programs worldwide specify Ti64 for submarine pressure hull sections, propeller shaft sleeves, seawater system piping, and sonar dome structures. The 1.4mm wire diameter is particularly suited for the precision TIG welding of thin-wall titanium pipe systems used in submarine seawater cooling circuits, where weld quality directly impacts vessel safety and operational stealth characteristics.
The commercial and industrial forces driving demand for Ti64 welding wire in marine and offshore sectors
Global deepwater and ultra-deepwater capital expenditure is forecast to exceed USD 180 billion between 2024 and 2030. As operators push production into water depths beyond 2,000 meters, the hydrostatic pressure, low temperature, and H₂S content of produced fluids make titanium the only technically viable material for many critical connections — directly expanding the addressable market for Ti64 welding wire.
The global offshore wind capacity is expected to reach 380 GW by 2032, with floating offshore wind (FOWT) representing the fastest-growing segment. Simultaneously, offshore green hydrogen production via electrolysis requires extensive titanium process equipment. Both sectors are emerging as major new consumers of Ti64 welding wire for marine-grade structural fabrication.
The offshore industry is rapidly adopting automated orbital GTAW systems to address skilled welder shortages and improve weld quality consistency. Ti64 1.4mm wire is specifically optimized for automated wire feed systems, and the standardization of 1.4mm as the preferred diameter is accelerating as orbital welding equipment manufacturers program this gauge as their default titanium filler setting.
Classification societies including DNV GL, Bureau Veritas, and Lloyd's Register are tightening requirements for titanium weld filler traceability in offshore critical systems. Suppliers capable of providing full chemical and mechanical certification with batch-level traceability to ASTM / AMS standards are gaining significant competitive advantages in project procurement.
Wire Arc Additive Manufacturing (WAAM) using Ti64 wire is emerging as a disruptive technology for producing large titanium offshore components — including pressure vessel sections, manifold bodies, and structural nodes — with significant reductions in material waste and lead time compared to conventional forging and machining. The 1.4mm diameter is well-suited for WAAM deposition systems, positioning this wire grade at the intersection of traditional welding and advanced manufacturing.
China, South Korea, Australia, and Southeast Asian nations are investing heavily in offshore LNG, deepwater oil production, and marine renewable energy. This regional expansion is creating substantial new demand for certified titanium welding consumables, and proximity to established titanium production centers in China provides supply chain advantages for regional offshore projects.
We have multiple titanium products for marine, offshore, chemical, and industrial applications
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
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 | Annealed
Grade: GR1, GR2, GR7, GR12
Standards: ASTM B265
Specifications: δ(12-75mm)×W(1500-2500mm)×L(1000-12,000mm)
Custom request size available.
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.
Grade: Ti-5Al-2.5Sn
Standard: ASTM B265
Specifications: δ(0.5-50mm)×W(500-1500mm)×L(1000-20,000mm)
Meet customization requests.
Delivering certified titanium solutions across the world's most demanding industrial sectors
In the chemical industry, titanium is widely used against highly corrosive media such as chlor-alkali and sulphuric acid. It ensures the efficient and safe operation of chemical production, prevents material leakage and guarantees product quality.
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Supplies provide the high-strength, corrosion-resistant titanium materials for exploration, production and refining oil. Ti64 welding wire is the standard filler for critical offshore connections.
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Corrosion resistance in seawater and brackish applications make titanium the material of choice in marine applications — from naval vessels to deep-sea research submersibles and offshore renewable energy.
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Titanium improves the efficiency and extends the life of desalination equipment due to its corrosion resistance, high strength, light weight and good thermal conductivity — ideal for brine handling systems.
View more →Founded in 2001, ProX Metal is a high-tech enterprise specialising in the development, production and servicing of pure and alloy titanium materials. As a leading manufacturer of raw titanium materials, we focus on providing cost-effective, stable, high-end titanium materials applied in chemical, oil and gas, marine and electronics fields. We are ISO 9001:2015 certified and hold 14 national patents.
What our global marine and offshore clients say about ProX Metal titanium products
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