Titanium Grade 5 Pipe Fittings

Titanium Grade 5 (WPT5, Ti-6Al-4V) Butt-Weld Fittings to ASTM B363: Elbows, Tees, Reducers, Caps

Dinesh Tube India supplies and exports titanium Grade 5 pipe fittings from Mumbai for high-pressure, offshore and weight-critical piping. Grade 5 (Ti-6Al-4V, UNS R56400, Werkstoff 3.7165) butt-weld fittings are made to ASTM B363 / ASME SB363, marked WPT5 (seamless) or WPT5W (welded), with dimensions to ASME B16.9, and supplied with EN 10204 3.1 mill test certificates.

Grade 5 is the high-strength titanium alloy, about 2.6 times as strong as Grade 2. It is chosen for strength and weight, not for chemical corrosion, so Grade 5 fittings are mostly made to order to match Grade 5 pipe and flanges. For all grades, see our titanium pipe fittings page.

Table of Contents

Grade 5 Fitting Types
Specification & Sizes
WPT5 Marking
WPT5 vs WPT2 vs WPT12
Chemical Composition
Mechanical Properties
How Grade 5 Fittings Are Made
When Grade 5 Makes Sense
Grade 5 Package
Applications
FAQs

Titanium Grade 5 Fitting Types

Fitting	Variants	Dimension Standard
Elbow	90° and 45°, long radius (1.5D) and short radius (1D)	ASME B16.9 (LR); B16.9 / B16.28 (SR)
Tee	Equal and reducing	ASME B16.9
Reducer	Concentric and eccentric	ASME B16.9
Cap	Butt-weld end cap	ASME B16.9
Stub end	Long and short (MSS), for lap-joint flanges	ASME B16.9; MSS SP-43
Cross	Equal and reducing (on request)	ASME B16.9
Pipe bend	3D, 5D or custom radius (on request)	To drawing

Titanium Grade 5 WPT5 Ti-6Al-4V butt-weld pipe fittings to ASTM B363

How Grade 5 Fittings Are Marked

ASTM B363 fittings carry the grade symbol with a "W" suffix when they are made from welded material or contain welds:

WPT5: seamless Grade 5 fitting
WPT5W: welded Grade 5 fitting

A typical marking reads: maker's mark, ASTM B363 WPT5, size and schedule (for example 2" SCH 40S) and heat number.

How Grade 5 Fittings Are Made

Grade 5 is much stronger and less formable than Grade 2, so its fittings are made differently:

Hot formed: elbows, tees and reducers can be hot formed from Grade 5 pipe or plate and then annealed.
Machined: small elbows, tees, caps and stub ends are often machined from Grade 5 bar or forgings, which gives accurate dimensions and no forming defects.
Fabricated: larger or special fittings can be welded from plate to drawing.

For this reason Grade 5 fittings are mostly made to order, with longer lead times than Grade 2.

WPT5 vs WPT2 vs WPT12 Fittings

Point	WPT2 (Grade 2)	WPT12 (Grade 12)	WPT5 (Grade 5)
Min. tensile / yield	345 / 275 MPa	483 / 345 MPa	895 / 828 MPa
Min. elongation	20%	18%	10%
Seawater, chlorine	Excellent	Excellent	Good
Hot-brine crevices, reducing acids	Fair / poor	Excellent / good	Fair / poor
Availability	Widest range	Good	Mostly to order
Main reason to choose	Corrosion at lowest cost	Hot-brine corrosion plus strength	Highest strength-to-weight

Titanium Grade 5 Fitting Chemical Composition (ASTM B363, %)

Element	WPT5
Aluminium (Al)	5.5–6.75
Vanadium (V)	3.5–4.5
Iron (Fe), max	0.40
Oxygen (O), max	0.20
Carbon (C), max	0.08
Nitrogen (N), max	0.05
Hydrogen (H), max	0.015
Titanium (Ti)	Balance

Check the current ASTM B363 edition (B363-23) and the mill certificate for governing values.

Titanium Grade 5 Fitting Mechanical Properties (Minimum)

Tensile Strength	Yield Strength (0.2%)	Elongation	Density
895 MPa (130 ksi)	828 MPa (120 ksi)	10%	4.43 g/cm³ (0.160 lb/in³)

When Grade 5 Fittings Make Sense

Good fit: high-pressure and weight-critical lines, offshore and marine systems, and lines where Grade 5 pipe is already specified.
Usually not needed: seawater, chlorine and chemical piping at normal pressures, where Grade 2 or Grade 12 fittings cost less, resist corrosion better and are easier to get.
Not suitable: hydrofluoric acid, fluorides and dry chlorine gas.

Grade 5 Package

Grade 5 Flanges

F-5 weld neck, blind and slip-on flanges to ASTM B381.

Grade 5 Pipe

Seamless Grade 5 pipe to ASTM B861.

Grade 5 Plate

Ti-6Al-4V sheet and plate to ASTM B265 (AMS 4911 on request).

Need Grade 5 titanium fittings? Send the fitting list with type, NPS, schedule and quantity, or your drawing, to kamlesh@dineshtube-india.com or call +91 83559 10913. You can also send an enquiry.

Installation Notes

Welding: GTAW with full argon shielding, trailing shields and internal purge, using ERTi-5 filler (or ERTi-23 where higher weld ductility is needed).
Matching: weld Grade 5 fittings to Grade 5 pipe; joining to Grade 2 is possible but the joint takes the lower grade's strength.
Iron contamination: keep titanium separate from carbon-steel fabrication and use clean tools.

Titanium Grade 5 Fitting Applications

High-pressure process and hydraulic lines
Offshore and subsea systems
Marine and naval weight-critical piping
Specialised equipment built from Grade 5 parts
Motorsport and high-performance systems

Offshore, marine and high-pressure uses of titanium Grade 5 pipe fittings

Titanium Grade 5 Pipe Fittings: FAQs

Which standard covers titanium Grade 5 pipe fittings?

ASTM B363 (ASME SB363) covers seamless and welded titanium and titanium alloy butt-weld fittings, including Grade 5. They are marked WPT5 (seamless) or WPT5W (welded), with dimensions to ASME B16.9.

What does WPT5 mean?

WPT5 is the ASTM B363 grade symbol for a titanium Grade 5 (Ti-6Al-4V, UNS R56400) wrought pipe fitting. WPT5W means the fitting is made from welded material or contains welds.

Are Grade 5 fittings formed or machined?

Both. Larger elbows, tees and reducers can be hot formed from Grade 5 pipe or plate; small fittings such as elbows, caps and stub ends are often machined from Grade 5 bar or forgings.

Why use Grade 5 fittings instead of Grade 2?

Grade 5 has a minimum yield strength of 828 MPa, about three times that of Grade 2, and suits high-pressure and weight-critical lines. For corrosive chemical piping at normal pressures, Grade 2 or Grade 12 fittings are usually better and cost less.

Are Grade 5 fittings available from stock?

Grade 5 fittings are mostly made to order to suit the pipe size, schedule and quantity. Send your fitting list early to allow for lead time.

What is the price of titanium Grade 5 pipe fittings?

The price depends on fitting type, NPS, schedule, forming or machining route, quantity and certification. Send your fitting list or drawing to kamlesh@dineshtube-india.com or call +91 83559 10913 for a current quote.

Which certificates come with Grade 5 fittings?

Every supply comes with an EN 10204 3.1 mill test certificate showing heat number, chemical analysis and mechanical properties to ASTM B363. EN 10204 3.2 certificates and third-party inspection can be arranged on request.

Export Destinations for Titanium Grade 5 Pipe Fittings

We supply titanium Grade 5 pipe fittings across India to fabricators, dealers and engineering buyers in Maharashtra, Gujarat, Karnataka, Tamil Nadu and Telangana, and export to the Middle East (UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain), Asia (Singapore, Malaysia, Vietnam, Bangladesh), Africa (Egypt, Nigeria, South Africa) and Europe on request.