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Titanium couplings and nipples are essential components used in piping systems to connect, extend, or adapt pipes. Renowned for their outstanding strength, corrosion resistance, and durability, titanium fittings are widely utilized in high-performance industries such as aerospace, marine, chemical processing, and power generation. The unique properties of titanium ensure that these fittings offer long-lasting, reliable service in demanding applications.
Titanium Coupling
A titanium coupling is a pipe fitting used to join two pipes or tubes together. They are designed to connect the same or different diameter pipes, allowing for a seamless, leak-proof connection. Titanium couplings offer exceptional resistance to corrosion, high strength, and are lightweight, making them ideal for use in environments exposed to harsh conditions like seawater, chemical exposure, or high temperatures.
Titanium Nipple
A titanium nipple is a short, cylindrical pipe section that is typically threaded on both ends to allow for easy connection of pipes. It serves as an extension or connection between two other fittings or pipes, offering a secure and stable joint. Like other titanium components, titanium nipples offer the advantage of corrosion resistance, strength, and durability, making them suitable for challenging applications across various industries.
Titanium Couplings and Nipples – Mechanical Specifications
Material:
Grade: Typically Grade 2 (commercially pure titanium) or Grade 5 (Ti-6Al-4V, titanium alloy) depending on the application requirements.
Standard: ASTM B337, ASTM B348, or equivalent.
Tensile Strength:
Grade 2 (Pure Titanium): 35,000 – 50,000 psi (240 – 345 MPa).
Grade 5 (Ti-6Al-4V): 130,000 psi (900 MPa).
Yield Strength:
Grade 2 (Pure Titanium): 20,000 – 40,000 psi (138 – 276 MPa).
Grade 5 (Ti-6Al-4V): 120,000 psi (828 MPa).
Elongation:
Grade 2 (Pure Titanium): 20-25%.
Grade 5 (Ti-6Al-4V): 10-15%.
Hardness:
Grade 2 (Pure Titanium): 170-230 HV (Vickers hardness).
Grade 5 (Ti-6Al-4V): 300-400 HV (Vickers hardness).
Types of Titanium Couplings:
Threaded Couplings: Used to connect pipes with matching threads, providing a secure and easy-to-assemble connection. Common for low-pressure systems.
Socket Weld Couplings: Welded into the socket of connecting pipes, ideal for high-pressure applications, offering a permanent, strong connection.
Butt Weld Couplings: Have flared ends for welding to pipes, commonly used in high-pressure systems for a smooth and durable connection.
Flanged Couplings: Connect pipes via flanges and bolts with a gasket for a high-pressure, leak-proof connection. Suitable for large-scale industrial applications.
Types of Titanium Nipples:
Threaded Nipples: Cylindrical pipes with male threads at both ends, used to extend or connect pipes. Easy to install and remove.
Socket Weld Nipples: One end fits into a socket for welding, designed for high-pressure systems, offering a permanent and robust connection.
Butt Weld Nipples: Used to connect pipes by welding, offering a seamless and high-strength connection for high-pressure systems.
Reducing Nipples: Connect pipes of different diameters, allowing for transitions between pipe sizes in fluid systems.
Extension Nipples: Extend the length of a pipeline, used in systems requiring adjusted pipe alignment or spacing.
Hex Nipples: Have a hexagonal shape for easy tightening and installation without tools, commonly used in fluid and gas systems.
Product name:Grade 12 Titanium plate
Unit price:$15.5-$36.9/kg
Material: Titanium Grade 12 (Ti-0.3Mo-0.8Ni)
Standard: ASTM/ASME B265
Demension: Thickness*1000*2000mm Thickness*3000*6000mm (Standard size);
Thickness: 0.5mm; 0.8mm; 1.0mm; 1.2mm; 1.5mm; 2.0mm; 3.0mm; 4.0mm ......40mm etc br>Technique : Rolled
Status: Annealed(M)
GR12 is a titanium alloy containing molybdenum and nickel (Ti-0.3Mo-0.8Ni).Grade 12 titanium plate is high quality and weldability. It is a titanium alloy that has always been very durable, even at high temperatures. In addition, Grade 12 titanium plates have excellent corrosion resistance in reducing and oxidizing environments, and their heat resistance is better than that of pure titanium. Grade 12 titanium sheets generally have few scratches and are not easy to scratch.
Product name:Grade 12 Titanium plate
Material: Titanium Grade 12 (Ti-0.3Mo-0.8Ni)
Standard: ASTM/ASME B265
Demension: Thickness*1000*2000mm Thickness*3000*6000mm (Standard size);
Thickness: 0.5mm; 0.8mm; 1.0mm; 1.2mm; 1.5mm; 2.0mm; 3.0mm; 4.0mm ......40mm etc
Technique : Rolled
Status: Annealed(M)
MTC: EN10204.3.1 certificate
Applications : Petroleum ,chemical industry, Marine, medical
Package:Standard export packaging, inside foam film and pearl cotton protection, outside fumigation-free plywood case.
Grade 12 Titanium Plate Equivalent Grades:
STANDARD
WERKSTOFF NO.
UNS
Titanium Grade 12
3.7105
R53400
Titanium ASTM B265 Gr 12 Plate Chemical Composition:
Fe O C H N Mo Ni
≤0.30
≤0.18
≤0.08
≤0.015
≤0.03
0.2 - 0.4
0.6 - 0.9
Titanium Grade 12 Plate Mechanical Properties:
Material
Tensile Strength min
Yield Strength
Elongation in 2" (%)
ksi
Mpa
Max
Min
ksi
Mpa
Ksi
Mpa
Titanium CP Grade12Annealed Sheet
70
483
50
345
-
-
18
Product Name: Titanium Pipe
Standard: ASTM B338
Material: Gr1, Gr2
Unit Price: $25usd/kg-$40usd/kg
Type: Welded/Seamless
Shape: Round
Outer Diameter: 9.52mm/12.7mm/15.9mm/19mm/21.7mm/25.4mm/32mm/33.4mm/38mm/45mm etc.
Wall Thickness: 0.5-3.0mm
Length: Max 12000mm
Surface: Bright
Product Information
Titanium pipe is light in weight, high in strength and superior in mechanical properties. It is widely used in heat exchange equipment, such as tube and tube heat exchangers, coil heat exchangers, serpentine tube heat exchangers, condensers, evaporators and transportation pipelines. Many nuclear power industries use titanium pipes as standard pipes for their units
Product name: Grade 7 titanium tubes
Standard:ASTM B338 ASTM B861 ASTM B862
Material:Titanium Gr7
Diameter:5-914mm
Wall thickness:0.5-10mm
Length:Max 16000mm
Surface:Pickling surface/Polished
Type:Seamless, welded
Application:Heat Exchanger, chemical industry etc.
Technique:Rolled
Grade 7 Titanium Tubes
Product name: Grade 7 titanium tubes
Standard:ASTM B338 ASTM B861 ASTM B862
Material:Titanium Gr7
Diameter:5-914mm
Wall thickness:0.5-10mm
Length:Max 16000mm
Surface:Pickling surface/Polished
Type:Seamless, welded
Application:Heat Exchanger, chemical industry etc.
Technique:Rolled
Dimension and Tolerance of titanium tube
Outside diameter,
in.(mm)
Diameter tolerance,
in.(mm)
Permissible variations , wall thinckness,
t, % in.(mm)
<1 (25.4) ±0.004( ± 0.012) ±10
1-1½(25.4-38.1) ±0.005( ±0.127 ) ±10
1½-2(38.1-50.8) ±0.006( ± 0.152) ±10
2-2½(50.8-63.5) ±0.007( ± 0.178) ±10
2½-3½(63.5-88.9) ±0.010( ± 0.254) ±10
Grade 7 (Ti-0.2Pd) titanium tube
Chemical compositions(weight%,<=)
Pd
Al
V
Fe
C
0.12-0.25
----
----
0.30
0.08
N
H
O
Other(total)
Ti
0.05
0.015
0.2
0.4
Remainder
Physical properties(>=)
Σb
Tensile Strength
(Mpa)
σr0.2
Yield Strength
(Mpa)
δL0+50mm
Elongation
(%)
ψ
Reduction of area
(%)
370
250
20
25
The density of titanium alloy is generally about 4.51g/ cubic centimeter, only 60 of steel, the strength of pure titanium is close to the strength of ordinary steel, some high strength titanium alloy exceeds the strength of many alloy structural steel. Therefore, the specific strength (strength/density) of titanium alloy is much higher than that of other metal structural materials, as shown in Table 7-1. It can produce components with high unit strength, good rigidity and light weight. At present, titanium alloy is used for engine components, skeleton, skin, fasteners and landing gear.
High thermal strength
The use temperature is several hundred degrees higher than aluminum alloy, can still maintain the required strength at moderate temperature, can work for a long time at 450500 temperature these two titanium alloys still have high specific strength in the range of 150500, and aluminum alloy at 150 than the strength decreased significantly. Titanium alloys operate at temperatures up to 500, while aluminum alloys operate below 200.
Good resistance to corrosion
The corrosion resistance of titanium alloy is much better than that of stainless steel when working in humid atmosphere and seawater medium. Resistance to pitting corrosion, acid corrosion, stress corrosion is particularly strong; Excellent corrosion resistance to alkali, chloride, chlorine organic articles, nitric acid, sulfuric acid and so on. But titanium has poor corrosion resistance to reducing oxygen and chromite medium.
Good low temperature performance
Titanium alloy can keep its mechanical properties at low temperature and ultra low temperature. Titanium alloys with good low temperature performance and very low gap elements, such as TA7, can maintain certain plasticity at -253. Therefore, titanium alloy is also an important low temperature structural material.
Product Name: 10mm Titanium Round Rod
Standard: ASTM B348 ASTM F136 ASTM F67 AMS 4928
Material: GR1, GR2, GR3,GR4,GR5, GR7, GR12,GR23 etc.
Shape: Round, Square, Flat, Hex
Diameter: 6-200mm
Length: Max 6000mm
Surface: Bright
Application:Chemical industry,machinery, ocean, aviation, military industry etc.
Advantages:
1. Equipments:we have milling machine, annealing furnace, straightening machine, rolling mill, cutting machine, punching machine, sand blasting machine, etc.
2. Price:with more than 15 years of production and export experience in the titanium industry, we know this market well. Under the premise of quality assurance, to customers the most competitive price
3. Quality: Our titanium rods have been exported to many regions and countries in North America, Europe, Southeast Asia and so on, and the satisfaction rate has reached 99.95%. We accept any third party testing, such as SGS, TUV,BV, etc.
Physical properties of titanium bars:
Tensile Strength(min)
Yeild Strength(min)
Elongation(%)
ksi
MPa
ksi
MPa
Grade 1
35
240
20
138
24
Grade2
50
345
40
275
20
Grade 3
65
450
55
380
18
Grade 4
80
550
70
483
15
Grade 5
130
895
120
828
10
Grade 7
50
345
40
275
20
Grade 12
70
483
50
345
18
Grade 23
125
860
115
790
10
Product Name: Titanium Pipe
Standard: ASTM B338
Material: Gr1, Gr2
Unit Price: $25usd/kg-$40usd/kg
Type: Welded/Seamless
Shape: Round
Outer Diameter: 9.52mm/12.7mm/15.9mm/19mm/21.7mm/25.4mm/32mm/33.4mm/38mm/45mm etc.
Wall Thickness: 0.5-3.0mm
Length: Max 12000mm
Surface: Bright
Features of Gr1 titanium pipe:
1. Gr1 titanium pipe has plasticity. The elongation rate of the high-purity titanium pipe can reach 50-60%, and the reduction of area can reach 70-80%. Although the strength of high-purity titanium pipe is low, the pure industrial titanium contains a small amount of impurities and the addition of alloying elements can significantly strengthen its mechanical properties, making its strength comparable to high strength. This means that as long as the industrial pure titanium pipe contains a small amount of interstitial impurities and other metal impurities, it can make it have both high strength and appropriate plasticity.
2. The specific strength (strength to weight ratio) of industrial pure titanium pipe is very high in metal structural materials. Its strength is equivalent to steel, but its weight is only 57% of steel.
3. Gr1 titanium pipe has strong heat resistance, and can still maintain good strength and stability in the atmosphere at 500°C.
4. Titanium pipe also has good low temperature resistance. Even at the ultra-low temperature of -250℃, it still has high impact strength and can withstand high pressure and vibration.
5. Strong corrosion resistance, this is because it has a particularly large affinity for oxygen, and can form a dense oxide film on its surface, which can protect titanium from corrosion by the medium. Therefore, titanium has good stability in acidic, alkaline, neutral salt solutions and oxidizing media, and has better corrosion resistance than existing stainless steel and other non-ferrous metals.
Chemical Composition (Wt%)
ASTMNo.
Femax
O max
Nmax
Cmax
Hmax
Pd
Al
Bal
Grade1
0.2
0.18
0.03
0.1
0.015
-
-
Ti
Physical Properties(Min)
ASTMGrade
AlloyComposition
TensileStrength
YieldStrength
Elongation min %
ksi
Mpa
ksi
Mpa
Grade 1
UnalloyedTi("Pure")35A-CP1
35
240
20
138
24
DIN 2573 Super Duplex Flanges PN 6 are high-performance, low-pressure flanges engineered from Super Duplex stainless steels, specifically designed for highly corrosive and mechanically demanding environments. These flanges conform to DIN 2573 standards and offer a superior combination of corrosion resistance and tensile strength, making them suitable for critical applications exposed to aggressive chemicals, seawater, and high-pressure fluids. With enhanced resistance to pitting, crevice corrosion, and stress corrosion cracking, Super Duplex flanges are the material of choice for industries requiring durability under extreme service conditions.
Ladhani Metal Corporation is a dependable manufacturer and global supplier of Super Duplex flanges, delivering components that meet international quality and performance standards. The DIN 2573 flat flange design ensures ease of installation and reliable sealing in low-pressure systems, even when operating in harsh chemical or marine environments.
Pressure Rating:
• PN 6 (6 bar / 87 psi): Designed for low-pressure systems where both exceptional corrosion resistance and superior mechanical strength are critical for long-term reliability and safety.
Flange Types:
• Plate Flanges
Flat disc-type flanges used to join piping systems with bolted connections and gasket seals, ensuring tight, leak-free joints in low-pressure operations.
• Flat Face (FF) Flanges
Provide even load distribution across the sealing surface, ideal for applications involving non-metallic or cast components where flat gaskets are used.
• Slip-On Flanges
These flanges slip over the pipe and are welded on both the inside and outside, offering simple alignment and reduced fabrication cost for moderate-stress systems.
• Custom-Machined Flanges
Engineered to specific client requirements, available in a range of Super Duplex grades, with optional face types, dimensions, and surface finishes.
Super Duplex Grades and Composition:
Super Duplex 2507 (UNS S32750)
Composition:
• Chromium (Cr): 24.0 – 26.0%
• Nickel (Ni): 6.0 – 8.0%
• Molybdenum (Mo): 3.0 – 5.0%
• Nitrogen (N): 0.24 – 0.32%
• Iron (Fe): Balance
Applications:
Super Duplex 2507 is used in highly corrosive applications requiring high strength and fatigue resistance. Common industries include offshore oil and gas, marine systems, desalination plants, and chemical processing where exposure to chloride-rich and high-pressure environments is prevalent.
Super Duplex 32760 (UNS S32760)
Composition:
• Chromium (Cr): 24.0 – 26.0%
• Nickel (Ni): 6.0 – 8.0%
• Molybdenum (Mo): 3.0 – 4.0%
• Tungsten (W): 0.5 – 1.0%
• Copper (Cu): 0.5 – 1.0%
• Nitrogen (N): 0.2 – 0.3%
• Iron (Fe): Balance
Applications:
This grade is widely used in oil and gas platforms, subsea pipelines, pressure vessels, and pump components, offering excellent corrosion resistance under fluctuating pressures and temperatures, particularly in seawater and acidic environments.
Applications of DIN 2573 Super Duplex Flanges:
• Offshore and Subsea Engineering:
Ideal for pipelines, risers, and manifolds exposed to saltwater, high pressure, and dynamic stresses.
• Chemical Processing Plants:
Used in systems handling aggressive chemical media like chlorides, sulfides, and acids, where high corrosion resistance is required.
• Oil and Gas Industry:
Common in wellhead systems, separators, and refinery units where high mechanical strength and resistance to sulfide stress corrosion are essential.
• Power Generation:
Used in high-pressure steam systems, flue gas scrubbers, and cooling water systems for their strength and corrosion resistance at elevated temperatures.
Key Features:
• Compliant with DIN 2573 standard for low-pressure flange systems
• Superior resistance to pitting, crevice corrosion, and chloride stress corrosion cracking
• Excellent mechanical strength, fatigue resistance, and weldability
• Available in Super Duplex 2507, 32760, and other high-alloy grades
• Long-lasting performance in aggressive and marine service conditions
• Custom sizes, face types, and surface finishes available upon request
• Ideal for offshore, oil and gas, power, and chemical process industries
Conclusion:
DIN 2573 Super Duplex Flanges PN 6 from Ladhani Metal Corporation combine superior corrosion resistance with high mechanical integrity, providing a dependable solution for critical systems operating in aggressive and corrosive environments. Designed in accordance with international standards and backed by expert manufacturing, these flanges offer long-term, leak-free performance in demanding industrial sectors. For customized flange solutions, material selection, or technical assistance, reach out to Ladhani Metal Corporation today.
📞 Contact Ladhani Metal Corporation
Website: https://www.ladhanimetal.in/
https://www.ladhanimetal.com/
Email: info@ladhanimetals.com
Request a Quote: Custom dimensions, materials, and finishes available upon request.