Titanium Threaded Flanges
Unique for its strength, lightness of weight and corrosion resistance
- Lightweight and high strength
- Corrosion resistant to chlorides, sea water & chlorine
- Excellent mechanical properties
- Titanium grades, chemistry & specifications
- Temperature vs strength data
- In-depth information on Grade 2 and Grade 5
- Threaded flange features and benefits
Titanium threaded flanges are best known for being strong, lightweight and corrosion resistant. One property that stands out when compared to other metal threaded flanges is that titanium threaded flanges have the highest strength-to-weight ratio with a density of 4.51 g /cm3. As an example, titanium grade 5 is 4 times stronger than 316 stainless steel at nearly half the weight. This makes titanium threaded flanges ideal for applications that require both lightness of weight and excellent strength such as oil & gas (down-hole), military and sporting goods.
Titanium threaded flanges are also unique among metals in the chemical processing industry for handling chlorine (wet) and chlorine compounds in aqueous solutions. Titanium threaded flanges are fully resistant to solutions of chlorides, hypochlorites, chlorates, perchlorates and chlorine dioxide. As a result titanium threaded flanges are often using within the chlorine related industries such as pulp and paper and chlor-alkali / bleach.
Titanium threaded flanges are also an excellent material to prevent seawater corrosion. Because titanium threaded flanges can resists corrosion by seawater up to temperatures as high as 500°F (260°C) as well as survive at ocean depths over a mile below the surface, titanium threaded flanges are used throughout the oil & gas, desalination and marine industries.
The most common grades of Titanium threaded rods are Grade 2 and Grade 5. Gain more insight on these by accessing our Grade 2 and Grade 5 overviews or by contacting our engineering experts.
Resources: Titanium Torque Specs, Flange Dimensions, Flange Bolting Chart
Flange Types Available: Blind Flanges, Lap Joint Flanges, Slip On Flanges, Socket Weld Flanges, Threaded Flanges, Weld Neck Flanges
Titanium Grades, Chemistry & Specifications
Titanium Grade 2 (Commercially Pure)
Unalloyed titanium; Commercially pure titanium is the most common grade of titanium utilized throughout industry due to its ease of availability and good properties.
Titanium Grade 2 Specifications: UNS R50400, ASTM B 348, AMS 4921, ASTM F 67, ISO 5832-2
Titanium Grade 5 (Ti 6Al-4V)
Known as the “workhorse” of the titanium alloys, Ti 6Al-4V, or Grade 5 titanium, is 2x stronger than titanium grade 2. This alloy offers high strength and light weight, useful formability and high corrosion resistance. Ti 6AI-4V finds many uses in the aerospace, medical, marine and chemical processing industries.
Titanium Grade 5 Specifications: ASTM - B265, B348, B381, B861, F467 and F468, AMS - 4911, 4928, 4935, 4965 and 4967, MIL-T - 9046 and - 9047
Titanium Grade 7
Grade 7 is the most corrosion resistant of all titanium alloys and is typically used in chemical processes and production equipment components. Similar to Grade 2, but with the addition of 0.12 to 0.25% palladium, Grade 23 has enhanced corrosion resistance to reducing acids and localized attack in hot halides.
Titanium Grade 7 Specifications: ASTM - B265, B337, B338, B348, B363, B381, B861 and B862
Titanium Grade 23 (TI 6AL-4V ELI)
Titanium grade 23 or TI 6AL-4V ELI is an Extra Low Intersticial grade. This grade is similar to Grade 5, but because of the low intersticials, its mechanical properties are enhanced. This ELI grade is often found in more demanding medical device applications as well as industrial applications.
Titanium Grade 23 Specifications:
ASTM - B265, B348, B363, B381, B861, B862 andF136, AMS - 4907, 4930 and 4956
Other titanium grades are also available upon request.
Mechanical Properties
Titanium's Resistance to Chlorine
Corrosion Data
Titanium Grade 5 Temperature vs. Strength
Titanium Threaded Flange Features & Benefits
Titanium threaded flanges have a tapered female thread to join the male threads of a pipe in order to create a tight seal. This type of flange is most ideal when post weld heat treatment is not possible in hazardous, flammable or explosive applications where welding is too dangerous. Titanium threaded flanges are also convenient in pilot processes whose configuration is often changed.
Threaded Flange Advangtages
- The main benefit is that that threaded seal eliminates the need for welding.
- As they do not require welding they save time and money to install.
- Allow for connections to be made in dangerous, explosive applications where welding is not possible.
- Useful connection in materials that are difficult to create a successful and strong weld.
- Ideal for connecting small diameter pipes.
- Systems could be easily reconfigured.
Threaded Flange Disadvantages
- They are not suitable where high temperatures, frequent cyclic conditions or bending stresses are likely in applications.
