2.5 mm Titanium Sheet (Grade 1)

2.5mm Grade1/TA1 Pure Titanium Sheet

Overview

The 2.5mm Grade1/TA1 pure titanium sheet meets international industrial manufacturing standards, occupying the upper end of the cold-rolled thin-plate range where rigidity, corrosion immunity, and non-magnetic behaviour are simultaneously required. At 2.5 mm, the sheet delivers a measurable increase in section modulus and panel stiffness compared with thinner gauges, while retaining the extraordinary ductility and cold-forming capability that are the hallmarks of Grade 1 commercially pure titanium (TA1 per GB/T 3620.1; ASTM Grade 1 / UNS R50250).

Standard supply is 2.5 mm × 1000 mm × 2000 mm in the fully annealed M condition with a smooth bright surface. Cut-to-size and custom dimensions are available on request.

Material Specification and Chemical Composition

Standards: GB/T 3620.1-2007 (grade TA1) and GB/T 3621-2007 (sheet / plate product), ASTM B265. Delivery condition: M (annealed), fully recrystallised equiaxed alpha-phase microstructure.

Physical and Mechanical Properties

The combination of low Young’s modulus (~103 GPa), high elongation (≥30%), and stable corrosion-barrier passive film over the service temperature range from −196 °C to ≈300 °C makes the 2.5mm TA1 sheet uniquely suited to applications that demand cyclic deformation tolerance alongside chemical resistance.

Plate Specification Categories

Standard delivery condition: M (annealed). Hard (Y) and hot-rolled (R) conditions available on request.

Corrosion Resistance

Excellent resistance: seawater and chloride brines (corrosion rate <0.001 mm/year, no pitting), nitric acid, acetic acid, citric acid, other organic acids, dilute alkali at ambient temperature, hydrogen peroxide, hypochlorite solutions, food and pharmaceutical contact environments.

Incompatible media: hydrofluoric acid (HF), hot concentrated hydrochloric acid, dilute sulfuric and phosphoric acids, anhydrous dry chlorine, hot fuming nitric acid, molten strong alkalis.

Applications of 2.5mm TA1 Titanium Sheet

The 2.5mm gauge is widely specified where formed industrial parts must withstand aggressive corrosive media while meeting demanding dimensional and structural tolerances:

• Industrial forming parts — deep-drawn shells, hydroformed tubes, roll-formed profiles, and press-brake-formed enclosures for chemical equipment, filtration housings, and process vessel internals requiring non-magnetic, corrosion-resistant metal.
• Seawater and marine corrosion-resistant structures — splash-zone cladding panels, sea-chest covers, pump wear plates, and structural liners for coastal and offshore plant continuously exposed to high-chloride seawater environments.
• Medical auxiliary equipment — non-magnetic MRI coil frames, patient support components, operating table panels, and sterilisable instrument holders where biocompatibility (ISO 10993) and absolute non-magnetism are design requirements.
• Electrolytic and electrochemical plant — electrode blanks, bipolar plate substrates, and cell liner sheets for water electrolysis, metal electrodeposition, and electrochemical water treatment systems.
• Chemical anti-corrosion structural panels — scrubber internal components, heat exchanger plates, distributor decks, and corrosion-barrier facings in fertiliser, fine-chemical, and pharmaceutical manufacturing environments.

Fabrication Guidelines

Cold forming: Excellent — 90° bending, roll forming, deep drawing, and spinning without pre-heating or intermediate annealing. Single-pass deformation ≥40%; intermediate anneal at 670–720 °C recommended after severe forming sequences involving multiple large-strain operations.

Welding: GTAW (TIG) with ER Ti-1 filler wire; continuous argon shielding of weld pool, back surface, and heat-affected zone throughout the weld cycle and cool-down. Weld quality meets base metal corrosion resistance and ductility standards.

Machining: Titanium-grade carbide tooling, low cutting speed, high feed, continuous coolant. 2.5mm sheet edges can be sheared clean with sharp-bladed tooling.

Hot working: Processing temperature 800–900 °C under vacuum or argon atmosphere; mandatory inert gas protection to prevent high-temperature oxygen absorption and hydrogen embrittlement.

Thermal treatment: Anneal at 670–720 °C, 30–120 min soak, air cool, vacuum or inert atmosphere. No quench-hardening applies for commercially pure titanium.

Grade Selection: TA1 vs TA2

Key Usage Precautions

• Fluorine-containing media: Prohibit prolonged contact with HF or any fluoride-bearing liquid; oxide film failure leads to rapid through-wall corrosion.
• High-temperature processing and welding: Must be performed under inert gas (argon) protection throughout; atmospheric oxygen or hydrogen causes embrittlement of the heat-affected zone.
• Large-deformation cold working: Intermediate annealing is required after heavy cold work to restore ductility and prevent workpiece cracking.
• Medical-grade hydrogen control: Hydrogen content must be strictly controlled to meet implant standards (ISO 5832-2 or equivalent); specify low-H lots when ordering for implant applications.
• Galvanic isolation: When assembling titanium sheet with carbon steel structural members, insulating gaskets or isolation tape must be fitted at all contact points to prevent galvanic corrosion of the steel.

Quality, Certification, and Customization

Mill test reports covering full chemical analysis, mechanical test results, and dimensional certification accompany every 2.5mm TA1 sheet, with traceability to the originating heat number. TOPTITECHS maintains ISO 9001 certification and can supply extended documentation packages for pharmaceutical GMP, medical device material qualification, and engineering procurement contractor (EPC) project requirements.

Custom options include: cut-to-size blanks, slit coil widths, electropolished or acid-pickled surface finishes, closer thickness tolerances, and low-hydrogen melt lots for medical and implant-adjacent applications. Browse the full titanium sheets & plates catalogue for the complete range of TA1 and TA2 thicknesses.