Titanium and Titanium Alloy Flanges
- Type: SORF, WNRF, THRRF, BLRF
- F-2, CP Ti-2, W.Nr 3.7025, AFNOR T35, BS 2TA1, GOST VT1-0 (ВТ1-0)
- F-5, Ti-6Al-4V, W.Nr 3.7165, AFNOR T-A6V, BS TA10-13, GOST BT6 (VT6)
- F-7, Ti-0.2Pd, W.Nr 3.7235, BS TA9
- F-12, Ti-0.3Mo-0.8Ni, W.Nr 3.7105
Features
Titanium and Titanium Alloy Flanges
Chemical Composition (wt.%) of Titanium and Titanium Alloy Flanges
Element | F-2 | F-5 | F-7 | F-12 |
---|---|---|---|---|
N | 0.03 max | 0.05 max | 0.03 max | 0.03 max |
C | 0.08 max | 0.08 max | 0.08 max | 0.08 max |
H | 0.015 max | 0.015 max | 0.015 max | 0.015 max |
Fe | 0.30 max | 0.40 max | 0.30 max | 0.30 max |
O | 0.25 max | 0.20 max | 0.25 max | 0.25 max |
Al | – | 5.5–6.75 | – | – |
V | – | 3.5–4.5 | – | – |
Pd | – | – | 0.12–0.25 | – |
Mo | – | – | – | 0.2–0.4 |
Ni | – | – | – | 0.6–0.9 |
Ti | Balance | Balance | Balance | Balance |
Mechanical Properties of Titanium and Titanium Alloy Flanges
Grade | Tensile Strength (min, ksi [MPa]) |
Yield Strength (0.2% Offset, min, ksi [MPa]) |
Elongation in 4D min (%) |
Reduction of Area min (%) |
F-2 | 50 [345] | 40 [275] | 20 | 30 |
F-5 | 130 [895] | 120 [828] | 10 | 25 |
F-7 | 50 [345] | 40 [275] | 20 | 30 |
F-12 | 70 [483] | 50 [345] | 18 | 25 |
Technical Specifications
Specification | Value |
Standard | ASME B16.5, ASME B16.47 Series A & B, EN 1092-1 Titanium and Titanium Alloy Flanges |
Grade | Grade F-2, F-5, F-7, F-12 |
Density | 4.51 g/cm³ |
Type of Flanges | Weld Neck (WN), Slip-on (SO), Socket Weld (SW), Threaded (Thr.), Blind (BL) |
Face of Flanges | Flat Face (FF), Raised Face(RF), Ring Type Joint (RTJ) |
Working Pressure | ASME B16.5: 150LBS, 300LBS, 400LBS, 600LBS, 900LBS, 1500LBS, 2500LBS, 3000LBS ASME B16.47-A: 150LBS, 300LBS, 400LBS, 600LBS, 900LBS ASME B16.47-B: 75LBS, 150LBS, 300LBS, 400LBS, 600LBS, 900LBS EN 1092-1: PN6, PN10, PN16, PN25, PN40, PN63/PN100 |
Dimension | NPS 1/8″ – 80″ |
Surface Process | Machined, Polished, Peeled, Rough Turned |
Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
Tests | Chemical Analysis, Tensile Test, UT/ET |
Type of Flanges
Based on Facing:
- Flat Face (FF): This is the most basic type, with a flat surface for gasket contact. It is used in low-pressure applications.
- Raised Face (RF): This type features a raised ring around the bolt circle for better gasket sealing and higher pressure capabilities.
- Ring-type Joint (RTJ): This type has grooves for metal ring gaskets, creating a very tight seal for high-pressure and high-temperature applications.
- Tongue and Groove (T&G): One flange has a raised ring (tongue), while the other has a matching groove for precise alignment and a leak-proof seal.
- Male and Female (M&F): Similar to T&G, but with a deeper insertion for even better alignment and sealing.
Based on Connection Type:
- Weld Neck (WN): Features a long tapered hub for butt welding to pipes, providing excellent strength and fatigue resistance.
- Slip-On (SO): Slides over the pipe and is fillet welded, offering easy installation but lower strength compared to WN.
- Socket Weld (SW): Similar to SO but with a socket for inserting the pipe, providing better flow and strength than SO.
- Threaded (Threaded): Has threads for connecting to pipes with matching threads, suitable for smaller sizes and lower pressures.
- Lap Joint (LJ): Used with stub ends, allowing easy rotation and alignment.
- Blind: Used to close off the end of a pipe or vessel, creating a dead end.
Other Types:
- Orifice: Has a built-in orifice plate for flow restriction.
- Expander: Used to connect pipes of different sizes.
- Reducer: Changes the pipe size within a system.
Packing
Packed in plywood boxes or on pallets.
Application
Chemical Processing: ANSI B16.5 flanges are common in chemical plants for connecting pipes carrying various chemicals, while ANSI B16.47 flanges handle larger diameters and higher pressures in specific processes.
Oil & Gas: Both ANSI and EN 1092-1 flanges are crucial in oil and gas exploration, production, and transportation, ensuring the leak-free flow of hydrocarbons. ANSI B16.47 flanges play a crucial role in large-diameter pipelines and high-pressure applications.
Power Generation: Flanges in power plants connect pipes carrying steam, water, and other fluids, with ANSI B16.5 being a common choice for various pressure classes.
Water Treatment: Flanges ensure efficient and safe water distribution and treatment, with both ANSI and EN standards playing a role depending on the specific requirements.
Shipbuilding: EN 1092-1 flanges are commonly used in marine applications thanks to their widespread adoption in Europe and suitability for seawater environments.