Gr6 Titanium Seamless Tube

Gr6 titanium, also known as Ti-5Al-2.5Sn or TA7, is an alpha-phase titanium alloy containing 5% aluminum and 2.5% tin. Unlike commercially pure titanium grades (Gr1–Gr4), Gr6 is a high-strength alloy designed for applications requiring:

Superior strength-to-weight ratio

Excellent weldability

Good stability at elevated temperatures (up to 480°C / 900°F)

High fracture toughness

Get Detailed Technical Data

 

Element	Weight %
Aluminum	5.0 – 5.75
Tin	2.0 – 3.0
Iron	≤ 0.50
Oxygen	≤ 0.20
Carbon	≤ 0.10
Nitrogen	≤ 0.05
Hydrogen	≤ 0.015
Titanium	Balance

 

Property	Annealed Condition
Tensile Strength (min)	825 MPa (120 ksi)
Yield Strength (min)	760 MPa (110 ksi)
Elongation (min)	10%
Reduction of Area	25%
Hardness	~36 HRC

 

Gr6 titanium seamless tubes are produced via:

Process Flow:

Billet preparation – Forged and conditioned Ti-5Al-2.5Sn round billet

Rotary piercing – Billet heated to beta transus range (1020–1060°C)

Cold rolling / pilgering – Multiple passes with intermediate annealing

Vacuum annealing – Stress relief and recrystallization

Straightening & cutting

NDT inspection – Ultrasonic or eddy current

Surface finishing – Pickled or ground OD

 

Size Range:

OD: 6 mm – 114 mm

Wall: 0.5 mm – 10 mm

Length: Up to 12,000 mm (custom cut)

 

Gr6 seamless tubes are governed by multiple standards depending on industry:

Specification	Scope	Industry
ASTM B861	Seamless titanium pipe/tube – general service	Industrial, chemical
AMS 4906	Ti-5Al-2.5Sn alloy, annealed	Aerospace
MIL-T-9047	Titanium tubing, seamless	Military
ISO 5832-11	Implantable titanium alloy	Medical
DIN 17865	Titanium alloy tubes	European industrial

 

Aerospace & Defense

Hydraulic and instrument lines

Engine bleed air ducts

Structural tubing

Rocket motor cases

Missile airframes

 

Chemical Processing

High-temperature reactors

Autoclave piping

Specialty heat exchangers (non-code)

 

Marine & Offshore

Deep-sea instrumentation housings

Pressure vessels for subsea systems

 

Medical

Surgical instrument tubing

Orthopedic implant components (ISO 5832-11)

 

Grade	Type	Strength	Corrosion	Formability	Cost	Primary Market
Gr2	CP	Low	Excellent	Excellent	Low	Industrial
Gr5	Alpha-Beta	Very High	Good	Fair	High	Aerospace/Industrial
Gr6	Alpha	High	Good	Fair	High	Aerospace
Gr9	Near-Alpha	Medium-High	Good	Good	Medium	Hydraulics
Gr12	CP + Ni/Mo	Medium	Excellent	Good	Medium	Chemical

 

Choose Gr6 titanium seamless tube if:

Your operating temperature exceeds 300°C continuously

You need aerospace-grade traceability and testing

Weight savings justify higher material cost

You are designing for cryogenic or elevated-temperature service

 

Choose another grade if:

You are building a seawater heat exchanger

You need ASME code stamping

Your primary concern is chloride corrosion

Budget is constrained

Consult Material Expert

 

Product Type	Grades Available	Standards / Specifications	Size Range	Typical Applications	Surface Finish
Seamless Tube	Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr11, Gr12, Gr16, Gr23, Gr26	ASTM B338, ASME SB-338, ASTM B861, ASTM B862, AMS 4906, MIL-T-9047	OD: 3–114 mm Wall: 0.3–10 mm Length: ≤ 12,000 mm	Heat exchangers, condensers, hydraulic lines, aerospace, chemical processing	Pickled, polished, ground, annealed
Welded Tube	Gr1, Gr2, Gr3, Gr7, Gr9, Gr11, Gr12, Gr16, Gr26	ASTM B338, ASME SB-338, ASTM B862	OD: 6–76 mm Wall: 0.4–3.0 mm Length: ≤ 15,000 mm	Seawater cooling, desalination, HVAC, food processing	As-welded, bead-removed, cold drawn, pickled
Titanium Plate / Sheet	Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr12, Gr23, Gr28	ASTM B265, ASME SB-265, AMS 4911, MIL-T-9046	Thickness: 0.3–50 mm Width: ≤ 2,500 mm Length: ≤ 8,000 mm	Pressure vessels, chemical reactors, marine cladding, aerospace skins	Hot rolled, cold rolled, pickled, blasted, polished
Titanium Bar / Rod	Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr12, Gr23, Gr28, Gr29	ASTM B348, ASME SB-348, AMS 4928, AMS 4971, MIL-T-9047	Diameter: 3–300 mm Length: ≤ 6,000 mm	Fasteners, shafts, flanges, medical implants, structural components	Forged, rolled, centerless ground, peeled, polished
Titanium Wire	Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr12, Gr23	ASTM B863, AMS 4954, AMS 4967, ISO 5832-11	Diameter: 0.1–10 mm Coil weight: ≤ 150 kg	Welding electrodes, springs, mesh, 3D printing, medical sutures	Annealed, bright, pickled, coated
Titanium Strip / Coil	Gr1, Gr2, Gr3, Gr4, Gr5, Gr7, Gr9, Gr12	ASTM B265, ASME SB-265	Thickness: 0.1–3.0 mm Width: ≤ 650 mm Coil ID: 300–600 mm	Welded tube feedstock, stampings, heat exchanger fins, bellows	Cold rolled, annealed, pickled, slit edge

Get Free Sample & Evaluation

 

Our factory is a specialized titanium mill products manufacturing facility, fully dedicated to the production of seamless and welded tubes, plate, sheet, bar, wire, and strip across a complete range of commercially pure and alloy titanium grades. Equipped with advanced cold rolling mills, continuous welding lines, precision slitting lines, and in-house heat treatment furnaces, we maintain full control over every stage of production-from raw material inspection to final non-destructive testing. Our quality system is certified to ISO 9001, and all products are manufactured and tested in accordance with ASTM, ASME, AMS, and MIL standards, with mill test reports providing full traceability. With the capacity to handle both large-volume production runs and custom-engineered orders, we serve global customers across the aerospace, chemical processing, desalination, marine engineering, and medical implant industries.

 

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