ASTM B338 Grade 2 Titanium Tubing
Standard：ASTM B338, ASME SB338
OD: 3 mm - 100 mm (Custom sizes available)
WT: 0.5 mm - 10 mm (Custom sizes available)
Length: Cut-to-length, standard up to 6 meters, or as per drawing
Condition: Annealed (ASTM B338)
Surface Finish: Pickled, Bright, or CF (Coil Finished)
Products Description
ASTM B338 Grade 2 Titanium Tubing with excellent corrosion resistance, lightweight strength, outstanding weldability, and long service life. Available in seamless and welded tubing for chemical, marine, aerospace, and heat exchanger applications.
ASTM B338 Grade 2 Titanium Tube
ASTM B338 Grade 2 Titanium Tubing is a commercially pure titanium tube widely recognized for its exceptional corrosion resistance, lightweight properties, and excellent mechanical performance. As the most commonly used grade of commercially pure titanium, Grade 2 provides an ideal balance between strength, ductility, weldability, and corrosion resistance.
Compared with stainless steel and nickel alloys, Pure Grade 2 Titanium Tubing offers a significantly higher strength-to-weight ratio, making it an excellent choice for industries requiring lightweight materials without compromising structural integrity.
Manufactured in accordance with ASTM B338, Pure Grade 2 Titanium Tubing are widely used in heat exchangers, condensers, desalination systems, chemical processing equipment, marine engineering, power plants, and medical equipment.
Key Performance Advantages
Outstanding Corrosion Resistance
The biggest advantage of Grade 2 Titanium Heat Exchanger Tube ASTM B338 is its outstanding corrosion resistance.
Titanium naturally forms a dense and stable oxide film (TiO₂) on its surface, providing continuous protection against aggressive environments. Even if the surface is scratched, the oxide layer rapidly regenerates, maintaining long-term corrosion resistance.
Grade 2 titanium tubing performs exceptionally well in:
Seawater
Salt spray environments
Chloride solutions
Oxidizing acids
Wet chlorine
Sodium hypochlorite
Unlike stainless steel, titanium is highly resistant to pitting corrosion, crevice corrosion, and stress corrosion cracking in chloride-containing environments.
Excellent Strength-to-Weight Ratio
Grade 2 titanium combines moderate strength with an exceptionally low density.
| Material | Density |
|---|---|
| Titanium Grade 2 | 4.51 g/cm³ |
| Stainless Steel 316L | 7.98 g/cm³ |
| Carbon Steel | 7.85 g/cm³ |
Titanium tubing weighs approximately 40% less than stainless steel, helping reduce equipment weight, transportation costs, and energy consumption.
Superior Heat Transfer Performance
Titanium tubing is widely used in shell-and-tube heat exchangers due to its excellent thermal conductivity combined with outstanding corrosion resistance.
Improved heat exchange efficiency
01
Longer operating life
02
Lower maintenance costs
03
Reduced fouling
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Excellent performance in seawater cooling systems
05
Excellent Weldability
ASTM B338 Grade 2 Titanium Tubing offers excellent weldability using standard titanium welding procedures.
Suitable welding methods include:
GTAW (TIG)
GMAW (MIG)
Plasma Arc Welding
Proper shielding with high-purity argon ensures strong, clean welds while maintaining corrosion resistance.
Outstanding Fatigue Resistance
Grade 2 titanium maintains excellent fatigue performance under cyclic loading, making it suitable for:
Offshore structures
Marine equipment
Aerospace tubing
Heat exchanger systems
Chemical processing plants
Long Service Life
Thanks to its excellent corrosion resistance, titanium tubing often lasts significantly longer than stainless steel or copper alloys in aggressive environments.
Benefits include:
Reduced replacement frequency
Lower maintenance costs
Improved equipment reliability
Lower total lifecycle cost
Chemical Composition
| Element | Content (%) |
|---|---|
| Titanium (Ti) | Balance |
| Iron (Fe) | ≤0.30 |
| Oxygen (O) | ≤0.25 |
| Carbon (C) | ≤0.08 |
| Nitrogen (N) | ≤0.03 |
| Hydrogen (H) | ≤0.015 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥345 MPa |
| Yield Strength | ≥275 MPa |
| Elongation | ≥20% |
| Hardness | ≤160 HB |
| Density | 4.51 g/cm³ |
| Elastic Modulus | 103 GPa |
Product Specifications
| Item | Specification |
|---|---|
| Standard | ASTM B338 |
| Grade | Grade 2 (UNS R50400) |
| Tube Type | Seamless / Welded |
| Outside Diameter | 6 mm – 114.3 mm |
| Wall Thickness | 0.5 mm – 10 mm |
| Length | Up to 12 m or Customized |
| Surface Finish | Pickled, Bright Annealed, Polished |
| Manufacturing Process | Cold Drawn / Seamless |
Surface Finish Options
We offer multiple surface finishes to meet different industrial requirements:
Pickled Finish
Bright Annealed Finish
Polished Finish
Precision Finished Surface
Typical Applications
ASTM B338 Grade 2 Titanium Tubing is widely used in:
Heat Exchangers
Excellent resistance to seawater corrosion makes Grade 2 titanium the preferred material for condenser and heat exchanger tubing.
Desalination Plants
Outstanding chloride corrosion resistance provides reliable long-term operation in seawater desalination systems.
Chemical Processing
Suitable for reactors, pipelines, storage tanks, and heat exchangers handling corrosive chemicals.
Marine Engineering
Widely used in offshore platforms, seawater cooling systems, and shipbuilding due to its superior seawater corrosion resistance.
Power Generation
Ideal for condenser tubing in thermal and nuclear power plants.
Medical Industry
Excellent biocompatibility and corrosion resistance make Grade 2 titanium suitable for certain medical equipment and devices.
International Equivalent Grades
| Standard | Grade |
|---|---|
| ASTM | Grade 2 |
| UNS | R50400 |
| ISO | Titanium Grade 2 |
| DIN | 3.7035 |
| EN | Titanium Grade 2 |
Quality Assurance
Each ASTM B338 Grade 2 Titanium Tube undergoes comprehensive inspection, including:
Chemical Composition Analysis
Mechanical Property Testing
Eddy Current Testing (ECT)
Ultrasonic Testing (UT)
Hydrostatic Testing
Dimensional Inspection
Positive Material Identification (PMI)
EN 10204 3.1 Mill Test Certificate
Third-party inspection by SGS, BV, TÜV, DNV, or other agencies is available upon request.
Why Choose Our Grade 2 Titanium Tubing?
ASTM B338 compliant manufacturing
High-purity titanium raw materials
Strict quality control throughout production
Excellent corrosion resistance for harsh environments
Precision dimensional tolerances
Custom sizes and fabrication services
Fast global delivery
Technical support from experienced engineers
Frequently Asked Questions
What is ASTM B338 Grade 2 Titanium Tubing?
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It is a commercially pure titanium tube manufactured according to ASTM B338, known for its excellent corrosion resistance, lightweight properties, and outstanding weldability.
Is Grade 2 Titanium Strong?
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Yes. Grade 2 offers moderate strength with excellent ductility and an outstanding strength-to-weight ratio, making it suitable for demanding industrial applications.
Can Grade 2 Titanium Tubing Be Welded?
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Yes. Grade 2 titanium tubing has excellent weldability when proper inert gas shielding techniques are used.
Is Titanium Better Than Stainless Steel?
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For highly corrosive environments, especially those involving seawater and chloride-containing media, Grade 2 titanium generally provides superior corrosion resistance and a much longer service life than stainless steel. Additionally, its lower density helps reduce equipment weight.
Do You Provide EN 10204 3.1 Certificates?
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Yes. All ASTM B338 Grade 2 Titanium Tubing can be supplied with EN 10204 3.1 Mill Test Certificates, along with chemical composition reports, mechanical test reports, and third-party inspection certificates upon request.
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