Titanium Grade 2 Flanges Manufacturer in India
Titanium Grade 2 is a commercially pure titanium alloy that is characterized by outstanding corrosion resistance, high strength-to-weight ratio and long-term performance in harsh industrial conditions. It is highly resistant to seawater, chlorides, acidic media and oxidizing chemicals, hence a very reliable material to be used in demanding applications. Titanium Grade 2 Flanges are popular in piping systems where corrosion prevention, longevity and structural stability are of great importance. The flanges are highly effective in chemically hostile and moist conditions, and hence the connections are leak-free and have a long life cycle. They are typically used in chemical treatment plants, desalination plants, offshore and marine systems, offshore buildings and structures, power stations, heat exchangers, cooling water, pharmaceutical, and oil and gas facilities.
What Are Titanium Grade 2 Flanges?
Titanium Grade 2 flanges are produced according to the international requirements, such as the ASTM B381 / UNS R50400 requirements and are composed of forged and rolled titanium to give high-capacity piping components. They possess excellent corrosion and pitting, crevice attack and stress corrosion cracking resistance; in addition, they have good mechanical strength and thermal stability. These flanges are most suited in systems that involve seawater, chemicals, high humidity, and other aggressive environments in the industries, owing to the fact that they are lightweight and very durable. Titanium Grade 2 Flanges can be used extensively in seawater pipelines, chemical processing units, marine engineering, offshore platforms, desalination plant systems, heat exchangers, condenser systems, pharmaceutical plant systems, and high-purity industrial piping systems where reliability, safety, and long service life are paramount.
Table of Contents
- Specification of Titanium Grade 2 Flanges
- Chemical Composition of Cp Grade 2 Flanges
- ASME SB 381 Grade 2 Flange Mechanical Properties
- Equivalent Grades of Ti Grade 2 Flanges
- Dimensions of Grade 2 Titanium Plate Flange
- Grade 2 Titanium Flange Weight Chart
- Pressure Rating Chart of Ti Grade 2 Flanges
- Types of Titanium Grade 2 Flanges
- Application and Industries Used of Ti Grade 2 Flanges
- Frequently Asked Questions (FAQ)
Specification of Titanium Grade 2 Flanges
| Feature | Details |
| Material Specification | ASTM B381 / ASME SB 381 Grade 2 |
| Size Range | 1/2" to 60" |
| Flange Standards | ANSI/ASME B16.5, B16.47 (Series A & B), B16.48, BS4504, BS 10, EN-1092, DIN, GOST |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Metric Pressure | PN6, PN10, PN16, PN25, PN40, PN64, etc. |
| Face Types | Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ), Tongue-and-Groove (T&G), Male-and-Female (M&F) |
| Main Types | Weld Neck (WNRF), Slip-On (SORF), Blind (BLRF), Socket Weld (SWRF), Threaded, Lap Joint (LJRF) |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175, NACE MR0103 |
| Testing Reports | 100% Radiography, Raw Materials Certificate, Third-Party Inspection |
| Applications | Petroleum, Power, Chemical, Gas, Shipbuilding, Metallurgy |
Chemical Composition of Cp Grade 2 Flanges
The titanium grade 2 flanges are mainly made with titanium,m but they also have some other elements that are given below.
| Grade | Titanium (Ti) | Carbon (C) | Iron (Fe) | Hydrogen (H) | Nitrogen (N) | Oxygen (O) | Aluminum (Al) | Vanadium (V) |
| Ti Grade 2 | 99.2 min | 0.1 max | 0.3 max | 0.015 max | 0.03 max | 0.25 max | - | - |
ASME SB 381 Grade 2 Flange Mechanical Properties
The mechanical properties of the titanium grade 2 flanges are given below.
| Property | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
| Value | 4.5 g/cm- | 1665 -C (3030 -F) | 49,900 Psi (344 MPa) | 39,900 Psi (275 MPa) | 20 % |
Equivalent Grades of Ti Grade 2 Flanges
The Titanium grade 2 flanges are manufactured in different standards. From them, some of the popular ones are listed below.
| Common Grade | ASTM Standard | Werkstoff Nr. (DIN) | UNS Number |
| Titanium Gr. 2 | B381 | 3.7035 | R50400 |
Dimensions of Grade 2 Titanium Plate Flange
The Grade 2 Titanium flange comes in a different dimension, and detailed information is listed below.
| NPS (inch/mm) | Diameter (in/mm) | Bore (in/mm) | Bolt Circle (in/mm) | Thickness (in/mm) | Bolt Dia (in) | Bolt Holes (#) | Slip-On (lb/kg) | Blind (lb/kg) |
| 1/2" (15) | 3.50 / 88.9 | 0.88 / 22.4 | 2.38 / 60.3 | 0.38 / 9.5 | 0.50 | 4 | 0.48 / 0.22 | 0.51 / 0.23 |
| 3/4" (20) | 3.88 / 98.4 | 1.09 / 27.7 | 2.75 / 69.9 | 0.38 / 9.5 | 0.50 | 4 | 0.59 / 0.27 | 0.65 / 0.29 |
| 1" (25) | 4.25 / 108.0 | 1.36 / 34.5 | 3.13 / 79.4 | 0.38 / 9.5 | 0.50 | 4 | 0.70 / 0.32 | 0.79 / 0.36 |
| 1-1/4" (32) | 4.63 / 117.5 | 1.70 / 43.2 | 3.50 / 88.9 | 0.38 / 9.5 | 0.50 | 4 | 0.81 / 0.37 | 0.95 / 0.43 |
| 1-1/2" (40) | 5.00 / 127.0 | 1.95 / 49.5 | 3.88 / 98.4 | 0.38 / 9.5 | 0.50 | 4 | 0.94 / 0.43 | 1.12 / 0.51 |
| 2" (50) | 6.00 / 152.4 | 2.44 / 62.0 | 4.75 / 120.7 | 0.38 / 9.5 | 0.63 | 4 | 1.33 / 0.60 | 1.62 / 0.73 |
| 2-1/2" (65) | 7.00 / 177.8 | 2.94 / 74.7 | 5.50 / 139.7 | 0.50 / 12.7 | 0.63 | 4 | 2.44 / 1.11 | 2.99 / 1.36 |
| 3" (80) | 7.50 / 190.5 | 3.57 / 90.7 | 6.00 / 152.4 | 0.50 / 12.7 | 0.63 | 4 | 2.64 / 1.20 | 3.46 / 1.57 |
| 3-1/2" (90) | 9.00 / 228.6 | 4.57 / 116.1 | 7.50 / 190.5 | 0.50 / 12.7 | 0.63 | 8 | 3.70 / 1.68 | 4.90 / 2.22 |
| 4" (100) | 10.00 / 254.0 | 5.66 / 143.8 | 8.50 / 215.9 | 0.63 / 15.9 | 0.75 | 8 | 4.95 / 2.24 | 7.50 / 3.40 |
| 5" (125) | 11.00 / 279.4 | 6.72 / 170.7 | 9.50 / 241.3 | 0.63 / 15.9 | 0.75 | 8 | 5.58 / 2.53 | 9.20 / 4.17 |
| 6" (150) | 13.50 / 342.9 | 8.72 / 221.5 | 11.75 / 298.5 | 0.63 / 15.9 | 0.75 | 8 | 8.01 / 3.63 | 14.00 / 6.35 |
| 8" (200) | 16.00 / 406.4 | 10.88 / 276.4 | 14.25 / 362.0 | 0.75 / 19.1 | 0.88 | 12 | 12.00 / 5.44 | 24.50 / 11.11 |
| 10" (250) | 19.00 / 482.6 | 12.88 / 327.2 | 17.00 / 431.8 | 0.75 / 19.1 | 0.88 | 12 | 17.50 / 7.94 | 33.50 / 15.19 |
Grade 2 Titanium Flange Weight Chart
The weight chart given below helps you to choose the most suitable Titanium grade 2 flanges according to your needs.
| NPS (inch/mm) | Holes (#) | Bolt Dia (in/mm) | Bolt Circle (in/mm) | Weld Neck (lb/kg) | Slip-On (lb/kg) | Blind (lb/kg) |
| 1/2" (15) | 4 | 0.50 / 12.7 | 2.38 / 60.3 | 0.94 / 0.43 | 0.94 / 0.43 | 1.26 / 0.57 |
| 3/4" (20) | 4 | 0.50 / 12.7 | 2.75 / 69.9 | 1.26 / 0.57 | 1.26 / 0.57 | 1.56 / 0.71 |
| 1" (25) | 4 | 0.50 / 12.7 | 3.13 / 79.4 | 1.56 / 0.71 | 1.56 / 0.71 | 1.70 / 0.77 |
| 1-1/4" (32) | 4 | 0.50 / 12.7 | 3.50 / 88.9 | 1.88 / 0.85 | 1.88 / 0.85 | 1.88 / 0.85 |
| 1-1/2" (40) | 4 | 0.50 / 12.7 | 3.88 / 98.4 | 2.50 / 1.13 | 2.50 / 1.13 | 2.20 / 1.00 |
| 2" (50) | 4 | 0.63 / 15.9 | 4.75 / 120.7 | 3.76 / 1.71 | 3.13 / 1.42 | 2.50 / 1.13 |
| 2-1/2" (65) | 4 | 0.63 / 15.9 | 5.50 / 139.7 | 5.02 / 2.28 | 4.37 / 1.98 | 4.05 / 1.84 |
| 3" (80) | 4 | 0.63 / 15.9 | 6.00 / 152.4 | 6.26 / 2.84 | 5.32 / 2.41 | 5.63 / 2.55 |
| 3-1/2" (90) | 8 | 0.63 / 15.9 | 7.00 / 177.8 | 7.37 / 3.34 | 6.87 / 3.12 | 8.45 / 3.83 |
| 4" (100) | 8 | 0.63 / 15.9 | 7.50 / 190.5 | 9.40 / 4.26 | 8.13 / 3.69 | 10.75 / 4.88 |
| 5" (125) | 8 | 0.75 / 19.1 | 8.50 / 215.9 | 12.00 / 5.44 | 9.40 / 4.26 | 12.00 / 5.44 |
| 6" (150) | 8 | 0.75 / 19.1 | 9.50 / 241.3 | 15.00 / 6.80 | 12.25 / 5.56 | 17.00 / 7.71 |
| 8" (200) | 8 | 0.75 / 19.1 | 11.75 / 298.5 | 24.50 / 11.11 | 18.25 / 8.28 | 28.75 / 13.04 |
| 10" (250) | 12 | 0.88 / 22.2 | 14.25 / 362.0 | 32.50 / 14.74 | 25.50 / 11.56 | 42.50 / 19.27 |
| 12" (300) | 12 | 0.88 / 22.2 | 17.00 / 431.8 | 50.00 / 22.68 | 38.75 / 17.57 | 67.00 / 30.39 |
| 14" (350) | 12 | 1.00 / 25.4 | 18.75 / 476.3 | 62.25 / 28.23 | 52.00 / 23.58 | 80.00 / 36.28 |
| 16" (400) | 16 | 1.00 / 25.4 | 21.25 / 539.8 | 78.00 / 35.37 | 57.00 / 25.85 | 103.00 / 46.71 |
| 18" (450) | 16 | 1.13 / 28.6 | 22.75 / 577.9 | 86.00 / 39.00 | 74.00 / 33.56 | 127.00 / 57.60 |
| 20" (500) | 20 | 1.13 / 28.6 | 25.00 / 635.0 | 104.00 / 47.17 | 94.00 / 42.63 | 166.00 / 75.28 |
| 24" (600) | 20 | 1.25 / 31.8 | 29.50 / 749.3 | 159.00 / 72.11 | 128.00 / 58.05 | 251.00 / 113.83 |
Pressure Rating Chart of Ti Grade 2 Flanges
The table provides detailed information on the pressure rating of different sizes and weights of Titanium grade 2 flanges.
| Temp. (-C) | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
| -29 to 38 | 20.0 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 154.6 | 257.6 | 429.4 |
| 150 | 15.8 | 50.3 | 66.8 | 100.3 | 150.6 | 250.8 | 418.2 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 145.8 | 243.4 | 405.4 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139.0 | 231.8 | 386.2 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 128.6 | 214.4 | 357.1 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124.0 | 206.6 | 344.3 |
| 350 | 8.4 | 40.3 | 53.6 | 80.4 | 120.7 | 201.1 | 335.3 |
| 375 | 7.4 | 38.9 | 51.6 | 77.6 | 116.5 | 194.1 | 323.2 |
| 400 | 6.5 | 36.5 | 48.9 | 73.3 | 109.8 | 183.1 | 304.9 |
| 425 | 5.5 | 35.2 | 46.5 | 70.0 | 105.1 | 175.1 | 291.6 |
| 450 | 4.6 | 33.7 | 45.1 | 67.7 | 101.4 | 169.0 | 281.8 |
| 475 | 3.7 | 31.7 | 42.3 | 63.4 | 95.1 | 158.2 | 263.9 |
| 500 | 2.8 | 28.2 | 37.6 | 56.5 | 84.7 | 140.9 | 235.0 |
| 538 | 1.4 | 16.5 | 22.1 | 33.1 | 49.6 | 82.7 | 137.9 |
| 550 | - | 13.9 | 18.6 | 27.9 | 41.8 | 69.7 | 116.2 |
| 575 | - | 9.4 | 12.6 | 18.9 | 28.3 | 47.2 | 78.6 |
| 600 | - | 6.6 | 8.9 | 13.3 | 19.9 | 33.2 | 55.3 |
| 625 | - | 5.1 | 6.8 | 10.3 | 15.4 | 25.7 | 42.8 |
| 650 | - | 4.7 | 6.3 | 9.5 | 14.2 | 23.6 | 39.4 |
Types of Titanium Grade 2 Flanges
Titanium gr 2 Spectacle Flanges
Titanium Grade 2 Lap Joint Flanges
Titanium Grade 2 Ring Type Joint Flange
Titanium UNS R50400 Plate Flange
Gr 2 Titanium Orifice Flanges
Gr 2 Titanium Tongue and Groove Flanges
Pure Titanium gr 2 Slip On Flanges
Titanium Alloy Grade 2 Threaded Flanges
Application and Industries Used of Ti Grade 2 Flanges
The titanium Grade 2 flanges are commonly applied to type of industries where corrosion resistance, strength, purity and long service life are critical to the reliable operation in harsh conditions. They find extensive use in chemical processing facilities in reactors, pipelines and heat exchangers that receive corrosive media; in maritime and offshore applications in seawater pipelines, offshore platforms and coastal infrastructure because of their superior performance in saltwater corrosion-resistant applications; and in desalination plants in seawater intake systems, condensers, and evaporators. They are also applied in power generation in cooling water lines, condensers and heat exchangers that are exposed to heat and moisture and in medical and pharmaceutical applications, they back high-purity and sterile piping systems. Titanium Grade 2 flanges have also been used in oil and gas plants as offshore platforms, sub-sea pipeline, and processing units, in water treatment plants and wastewater plants such as the use of chemical dosing systems and corrosive fluid transfer systems, in laboratory and high-purity applications such as precision chemical handling systems, and in aerospace and defense applications such as fuel systems, hydraulic lines, cooling systems and mechanical assemblies where lightweight strength, life and reliability are critical.
Frequently Asked Questions (FAQ)
They are pipe flanges made from commercially pure titanium (Grade 2), known for strength, corrosion resistance, and durability.
Yes, they perform very well in seawater and salty environments due to excellent corrosion resistance.
Yes, they can handle moderately high temperatures and maintain good strength and stability.
Yes, they are much lighter than steel flanges while still being strong and reliable.
If titanium flanges are used properly and maintained, they can last for decades, even in harsh environments.
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