Flanges
Titanium flanges give a wide range of benefits to the user due to their unique properties. Titanium is an incredibly strong, lightweight, and corrosion-resistant material that is ideal for industrial applications. The unique chemical makeup of titanium also makes it resistant to environmental degradation, making it a reliable choice for even the most demanding environments.
Flanged fittings are used in many industries, including oil & gas and petrochemical, marine, aerospace, and automotive manufacturing.
They provide a secure connection between pipes or other components while offering superior strength and pressure resistance capabilities. Because they can be used in high-pressure systems, they are particularly useful in hazardous substances or extreme temperature situations.
Titanium flanges offer greater corrosion protection than many other flanged fittings, due to their greater chemical resistance and superior durability. They are also significantly lighter than steel flanges, making them a great choice for applications where weight is an issue. Titanium flanges have been used in a variety of applications, including piping systems, pumps, valves, and other pieces of machinery.
Overall, titanium flanges provide strength, corrosion protection, and lightweight at the same time – a combination that makes them an ideal choice for particular applications across multiple industries. Not only do they offer superior performance capabilities but they can also save money by eliminating the need for additional hardware or repairs. With these benefits in mind, it's no wonder that titanium flanges are quickly becoming one of the most popular choices for industrial applications.
Specification of Titanium Flanges
Specifications
ASTM B381 / ASME SB381
Size Range
1 / 2” to 18"
Common Types
Threaded / Screwed / Forged / Plate
Pressure Rating
300 LBS, 600 LBS, 150 LBS, 2500 LBS, 900 LBS, 1500 LBS
Pressure Calculation in DIN
6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
International Standard
ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc
Types Of Titanium Flanges
Titanium Blind Flange
Titanium Threaded Flange
Titanium Slip On Flange
Titanium Weld Neck Flange
Titanium Lap Joint Flanges
Titanium Forged Flanges
Titanium Plate Flange
Titanium Socket Weld Flange
Titanium Long Weld Neck Flanges
Applications of Titanium Flanges
Titanium flanges connect piping systems in service conditions where both corrosion resistance and weight matter simultaneously. Offshore oil & gas platforms use them on seawater injection headers and subsea process lines where saltwater exposure rules out carbon steel and weight limits restrict heavier alloy options. Aerospace hydraulic lines and fuel systems use titanium flanges to reduce connection weight by 40% over stainless steel connections. Titanium is used in chlorine, wet chlorine gas, and nitric acid processing plants because it survives oxidizing acid environments that kill high-nickel alloys. Meeting these strict fluid demands, Inox Pumps leverages over 20 years of engineering experience as a leading Indian manufacturer of submersible pumps, precision CNC-machined components, and custom spare parts. Titanium flanges remain essential for corrosion protection and structural performance in desalination plants, coastal power station cooling water circuits, automotive exhaust manifolds, and pharmaceutical sterile fluid systems.
Features & Benefits of Titanium Flanges
The following are different features of Titanium Flanges that make it an ideal choice for most of the industries.
- Corrosion Resistance: Titanium forms a stable titanium dioxide surface oxide that resists seawater, chlorine, wet chlorine, and oxidising acids at temperatures up to 260°C.
- Strength-to-Weight Ratio: Grade 2 titanium achieves 345 MPa tensile strength at a density of 4.51 g/cm³ 43% lighter than 316L stainless at comparable strength.
- Temperature Performance: Service temperatures up to 260°C in oxidising media; cryogenic applications down to −196°C without ductility loss.
- Biocompatibility: Non-reactive with body fluids and pharmaceutical media, meeting USP Class VI requirements for biopharmaceutical process equipment.
- Long Service Life: Titanium flanges in seawater service routinely exceed 30-year service with no surface treatment or cathodic protection required.
- Low Maintenance: No painting, coating, or passivation treatment needed throughout service life.
Chemical Composition of Titanium Grade 2 Flanges
Titanium Grade 2's chemical balance controls the formation of the passive oxide film. Low oxygen and nitrogen content prevent embrittlement; iron remains below 0.30% to protect corrosion behaviour in aggressive service conditions.
| Element | Content (%) |
| Titanium (Ti) | Balance |
| Iron (Fe) | 0.30 max |
| Oxygen (O) | 0.25 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.03 max |
| Hydrogen (H) | 0.015 max |
Mechanical Properties of Titanium Grade 2 Flanges
At 345 MPa tensile minimum and 275 MPa yield minimum, Grade 2 titanium flanges cover ASME pressure class 150 and 300 service in most chemical and marine applications. Low density at 4.51 g/cm³ keeps installed weight below equivalent stainless connections in weight-critical piping runs.
| Property | Value |
| Tensile Strength | 345 MPa min |
| Yield Strength | 275 MPa min |
| Elongation | 20% min |
| Density | 4.51 g/cm³ |
| Melting Point | 1668°C |
Why Choose Our Titanium Flanges?
We supply Titanium Grade 2 and Grade 5 flanges to ASTM B381, ASME SB381, and MSS SP-44 standards. All flanges carry full material traceability from certified titanium mill stock with chemical and mechanical test reports. Raised face, flat face, ring type joint, and custom bore configurations are available from stock. Third-party inspection and NACE-compliant documentation support offshore and export specifications. Custom pressure ratings, bore diameters, and special facing finishes are available with 3–5 week lead times. Request material test reports and dimensional inspection certificates with your order.
Equivalent Grades Of Titanium Flanges
| STANDARD | WERKSTOFF NR. | UNS |
| Titanium Gr. 2 | 3.7035 | R50400 |
| Titanium Gr. 5 | 3.7165 | R56400 |
Pressure Rating Of Titanium Flanges
| ASME/ANSI B 16.5 | Welding Neck Flange, Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange |
| PRESSURE CLASS | 150, 300, 400, 600, 900, 1500, 2500 |
| ASME/ANSI B 16.47 | Welding Neck Flange, Blind Flange [Series A & B] |
| PRESSURE CLASS | 75, 150, 300, 400, 600, 900 |
| ASME/ANSI B 16.36 | Welding Neck Flange, Slip on Flange, Threaded Flange |
| PRESSURE CLASS | 300, 400, 600, 900, 1500, 2500 |
| BS 4504 SEC 3.1 | Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange |
| PRESSURE CLASS | PN 2.5 TO PN 40 |
| BS 4504[PART 1] | Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange |
| PRESSURE CLASS | PN 2.5 TO PN 400 |
| BS 1560 BOSS | Welding Neck Flange, Socket Welding Flange, Slip-On Flange, Blind Flange, Screwed Boss Flange, Lapped Flange |
| PRESSURE CLASS | 150, 300, 400, 600, 900, 1500, 2500 |
| BS10 | Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange |
| TABLE | D, E, F, H |
| DIN FLANGES | DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
| PRESSURE CLASS | PN 6 TO PN 100 |
Titanium Flange Pressure Temperature Rating
| Temperature (°F) | ASME/ANSI B16.5 Pressure Rating (psig) | ||||||
|---|---|---|---|---|---|---|---|
| Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 | |
| -20 to 100 | 275 | 720 | 960 | 1440 | 2160 | 3600 | 6000 |
| 200 | 230 | 600 | 800 | 1200 | 1800 | 3000 | 5000 |
| 300 | 205 | 540 | 720 | 1080 | 1620 | 2700 | 4500 |
| 400 | 190 | 495 | 660 | 995 | 1490 | 2485 | 4140 |
| 500 | 170 | 465 | 620 | 930 | 1395 | 2330 | 3880 |
| 600 | 140 | 435 | 580 | 875 | 1310 | 2185 | 3640 |
| 650 | 125 | 430 | 575 | 860 | 1290 | 2150 | 3580 |
| 700 | 110 | 425 | 565 | 850 | 1275 | 2125 | 3540 |
| 750 | 95 | 415 | 555 | 830 | 1245 | 2075 | 3460 |
| 800 | 80 | 405 | 540 | 805 | 1210 | 2015 | 3360 |
| 850 | 65 | 395 | 530 | 790 | 1190 | 1980 | 3300 |
| 900 | 50 | 390 | 520 | 780 | 1165 | 1945 | 3240 |
| 950 | 35 | 380 | 510 | 765 | 1145 | 1910 | 3180 |
| 1000 | 20 | 320 | 430 | 640 | 965 | 1605 | 2675 |
| 1050 | 20 | 310 | 410 | 615 | 925 | 1545 | 2570 |
| 1100 | 20 | 255 | 345 | 515 | 770 | 1285 | 2145 |
| 1150 | 20 | 200 | 265 | 400 | 595 | 995 | 1655 |
| 1200 | 20 | 155 | 205 | 310 | 465 | 770 | 1285 |
| 1250 | 20 | 115 | 150 | 225 | 340 | 565 | 945 |
| 1300 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
| 1350 | 20 | 60 | 80 | 125 | 185 | 310 | 515 |
| 1400 | 20 | 50 | 65 | 95 | 145 | 240 | 400 |
| 1450 | 15 | 35 | 45 | 70 | 105 | 170 | 285 |
| 1500 | 10 | 25 | 35 | 55 | 80 | 135 | 230 |
Titanium Slip On Flange Dimensions
| NPS | Outside Diameter O |
Thickness Q |
Raised Face Dia. R |
Hub Dia. at Base X |
Hub Length Y |
Bore Dia. W |
No. of Holes | Bolt Dia. | Bolt Circle Dia. |
|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 5/8 | 0.88 | 4 | 1/2 | 2-3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 5/8 | 1.09 | 4 | 1/2 | 2-3/4 |
| 1 | 4-1/4 | 9/16 | 2 | 1-15/16 | 11/16 | 1.36 | 4 | 1/2 | 3-1/8 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 2-5/16 | 13/16 | 1.70 | 4 | 1/2 | 3-1/2 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 2-9/16 | 7/8 | 1.95 | 4 | 1/2 | 3-7/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 1 | 2.44 | 4 | 5/8 | 4-3/4 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 3-9/16 | 1-1/8 | 2.94 | 4 | 5/8 | 5-1/2 |
| 3 | 7-1/2 | 15/16 | 5 | 4-1/4 | 1-3/16 | 3.57 | 4 | 5/8 | 6 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 4-13/16 | 1-1/4 | 4.07 | 8 | 5/8 | 7 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 1-5/16 | 4.57 | 8 | 5/8 | 7-1/2 |
| 5 | 10 | 15/16 | 7-5/16 | 6-7/16 | 1-7/16 | 5.66 | 8 | 3/4 | 8-1/2 |
| 6 | 11 | 1 | 8-1/2 | 7-9/16 | 1-9/16 | 6.72 | 8 | 3/4 | 9-1/2 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 9-11/16 | 1-3/4 | 8.72 | 8 | 3/4 | 11-3/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 1-15/16 | 10.88 | 12 | 7/8 | 14-1/4 |
| 12 | 19 | 1-1/4 | 15 | 14-3/8 | 2-3/16 | 12.88 | 12 | 7/8 | 17 |
| 14 | 21 | 1-3/8 | 16-1/4 | 15-3/4 | 2-1/4 | 14.14 | 12 | 1 | 18-3/4 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 18 | 2-1/2 | 16.16 | 16 | 1 | 21-1/4 |
| 18 | 25 | 1-9/16 | 21 | 19-7/8 | 2-11/16 | 18.18 | 16 | 1-1/8 | 22-3/4 |
| 20 | 27-1/2 | 1-11/16 | 23 | 22 | 2-7/8 | 20.20 | 20 | 1-1/8 | 25 |
| 24 | 32 | 1-7/8 | 27-1/4 | 26-1/8 | 3-1/4 | 24.25 | 20 | 1-1/4 | 29-1/2 |
15mm (1/2") Titanium Flange Weight Chart
| Standard | Class | Diameter | Bolt Circle Diameter | Number of Bolts | Bolt Size | Bolt Hole Diameter |
|---|---|---|---|---|---|---|
| AS 4087 | PN14 | 95 | 67 | 4 | M12 | 14 |
| AS 2129 | Table C | 95 | 67 | 4 | 13 | 14 |
| Table D | 95 | 67 | 4 | 13 | 14 | |
| Table E | 95 | 67 | 4 | 13 | 14 | |
| Table F | 95 | 67 | 4 | 13 | 14 | |
| Table H | 114 | 83 | 4 | 16 | 17 | |
| Table J | 114 | 83 | 4 | 16 | 17 | |
| ANSI B16.5 | Class 150 | 89 | 60 | 4 | 13 | 16 |
| Class 300 | 95 | 67 | 4 | 13 | 16 | |
| Class 600 | 95 | 67 | 4 | 13 | 16 | |
| Class 900 | 121 | 83 | 4 | 19 | 22 | |
| Class 1500 | 121 | 83 | 4 | 19 | 22 | |
| ISO 7005 (DIN) | PN6 | 80 | 55 | 4 | M10 | 11 |
| PN10 | 95 | 65 | 4 | M12 | 14 | |
| PN16 | 95 | 65 | 4 | M12 | 14 | |
| PN20 | 90 | 60.5 | 4 | M14 | 16 | |
| PN25 | 95 | 65 | 4 | M12 | 14 | |
| PN40 | 95 | 65 | 4 | M12 | 14 |
Titanium Flange Price
| Titanium Flanges | Price |
|---|---|
| ASTM B381 Gr 5 Titanium Alloy Pipe Welding Flange | ₹ 700 – ₹ 3,500 / Kg |
| Titanium Spacer Blind Flange | ₹ 35.28 – ₹ 3,527.07 / Piece |
| Titanium Pipe Welding Flange | ₹ 352.71 – ₹ 705.42 / Piece |
| Titanium RF Spectacle Slip Blind Flange | ₹ 35.28 – ₹ 14,108.28 / Piece |
| DIN Spectacle Blind / Blank Titanium Flange | ₹ 70.55 – ₹ 7,054.14 / Piece |
| ASME B16.5 Ti Gr 2 WN RF Pipe Flange for Oil & Gas | ₹ 1,058.13 – ₹ 5,643.32 / Piece |
| Gr 2 Titanium Blind Flange 3/4" ANSI Class 150 / 300 | ₹ 1,410.83 – ₹ 3,174.37 / Piece |
| Titanium Exhaust Pipe Flange | ₹ 1,410.83 – ₹ 1,763.54 / Piece |
| Forged Titanium Alloy SW Flange | ₹ 500 – ₹ 600 / Piece |
| ASME B16.5 Gr 2 Titanium Welding Neck Flange (DN10–DN600) | ₹ 45.86 – ₹ 52.91 / Piece |
FAQs For Titanium Flanges
Oil & gas (offshore), chemical processing, desalination, aerospace,
pharmaceutical, marine, and automotive exhaust systems. Anywhere oxidising
acid, seawater, or weight constraints eliminate stainless steel is where
titanium flanges earn their specification.
We supply ASME Class 150, 300, 600, 900, 1500, and 2500 pressure ratings.
Custom pressure classes outside this range are available on request with a
4-6 week lead time.
Titanium flanges conform to ASTM B381 / ASME SB381 for material, ASME
B16.5 for dimensions, and MSS SP-44 for large-bore applications. DIN and
ISO standard flanges are also available.
Yes custom bore diameters, face types, bolt circle patterns, and special
surface finishes (electropolished, passivated) are available. Provide your
flange drawing or dimensional specification for a lead time and price
confirmation.
Grade 5 titanium (Ti-6Al-4V) at 895 MPa tensile surpasses 316L stainless
steel at 485 MPa tensile. Grade 2 titanium at 345 MPa sits below 316L but
at 43% less weight, it delivers a higher strength-to-weight ratio in every
comparison.
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