UNS R50400 Titanium Grade 2 Tube
UNS: R50400
Standard: ASTM B338 / ASME SB338
Tube Type: Seamless / Welded
Application Standard: Condensers / Evaporators / Heat Exchangers
Outside Diameter: 3–100 mm or customized
Wall Thickness: 0.5–10 mm or customized
Length: Up to 6 m / Cut-to-Length
Heat Treatment: Annealed
Surface Finish: Pickled / Bright / Custom
Product Overview
UNS R50400 Titanium Grade 2 Tube is commercially pure titanium tubing with excellent corrosion resistance, good ductility and a high strength-to-weight ratio. Also known as UNS R50400 / Grade 2 Titanium Tube, it is widely used for heat exchangers, condensers, evaporators, chemical processing and seawater service.
JUDE STEEL supplies seamless and welded Grade 2 titanium tubing in standard and custom sizes, with options for cutting, bending and U-tube processing. PMI, dimensional inspection, eddy current testing, hydrostatic testing and EN 10204 3.1 MTC can be provided for bulk industrial orders.
GR2 Titanium Tube Specifications
| Item | Specification |
|---|---|
| Product | UNS R50400 Titanium Grade 2 Tube |
| Material | Commercially Pure Titanium Grade 2 |
| UNS | R50400 |
| Werkstoff No. | 3.7035 |
| Standard | ASTM B338 / ASME SB338 |
| Tube Type | Seamless / Welded |
| Application Standard | Condensers / Evaporators / Heat Exchangers |
| Outside Diameter | 3–100 mm or customized |
| Wall Thickness | 0.5–10 mm or customized |
| Length | Up to 6 m / Cut-to-Length |
| Heat Treatment | Annealed |
| Surface Finish | Pickled / Bright / Custom |
| End Type | Plain End / Custom |
| Processing | Cutting / Bending / U-Tube |
| Inspection | PMI / Dimensional / Eddy Current / Hydrostatic Testing |
| Certification | EN 10204 3.1 MTC |
| Main Applications | Heat Exchangers / Condensers / Chemical Processing / Desalination / Marine |
Available Sizes
UNS R50400 Titanium Grade 2 Tube can be supplied in a range of outside diameters, wall thicknesses and lengths for heat exchangers, condensers and other industrial applications. ASTM B338 covers both seamless and welded titanium tubing for these services.
| Outside Diameter (OD) | Wall Thickness (WT) | Typical Length |
|---|---|---|
| 6.35 mm (1/4") | 0.5–1.5 mm | 1–6 m |
| 9.52 mm (3/8") | 0.5–1.5 mm | 1–6 m |
| 12.70 mm (1/2") | 0.5–2.0 mm | 1–6 m |
| 15.88 mm (5/8") | 0.5–2.0 mm | 1–6 m |
| 19.05 mm (3/4") | 0.5–2.5 mm | 1–6 m |
| 22.22 mm (7/8") | 0.8–2.5 mm | 1–6 m |
| 25.40 mm (1") | 0.8–3.0 mm | 1–6 m |
| 31.75 mm (1-1/4") | 1.0–3.0 mm | 1–6 m |
| 38.10 mm (1-1/2") | 1.0–4.0 mm | 1–6 m |
| 50.80 mm (2") | 1.5–5.0 mm | 1–6 m |
| 63.50 mm (2-1/2") | 1.5–6.0 mm | 1–6 m |
| 76.20 mm (3") | 2.0–8.0 mm | 1–6 m |
| 89.00 mm | 2.0–8.0 mm | 1–6 m |
| 108.00 mm | 2.0–10.0 mm | 1–6 m |
Chemical Composition of UNS R50400 Titanium Grade 2 Tube
| Element | ASTM B338 Grade 2 Requirement, max. wt.% |
|---|---|
| Titanium (Ti) | Balance |
| Nitrogen (N) | 0.03 |
| Carbon (C) | 0.08 |
| Hydrogen (H) | 0.015 |
| Oxygen (O) | 0.25 |
| Iron (Fe) | 0.30 |
| Residual Elements, each | 0.10 |
| Residual Elements, total | 0.40 |
Mechanical Properties of Grade 2 Titanium Tube
| Property | ASTM B338 Grade 2 Typical Requirement |
|---|---|
| Tensile Strength | ≥ 345 MPa |
| Yield Strength (0.2% Offset) | ≥ 275 MPa |
| Elongation | ≥ 20% |
| Reduction of Area | ≥ 30% |
| Condition | Annealed |
Physical Properties
| Property | Typical Value |
|---|---|
| Density | 4.51 g/cm³ |
| Melting Point | 1668°C |
| Thermal Conductivity | 16.4 W/m·K |
| Specific Heat | 520 J/kg·K |
| Electrical Resistivity | 0.55 μΩ·m |
| Elastic Modulus | 105 GPa |
| Poisson's Ratio | 0.34 |
| Coefficient of Thermal Expansion | 8.6 × 10⁻⁶/K |
| Magnetic Property | Non-magnetic |
ASTM B338 Grade 2 Titanium Tube Standards
UNS R50400 Grade 2 Titanium Tube is commonly supplied to ASTM B338, which covers seamless and welded titanium tubes for condensers, evaporators and heat exchangers. The equivalent ASME specification is ASME SB338. Grade 2 is commercially pure titanium, offering good corrosion resistance, ductility and weldability for demanding industrial service.
JUDE STEEL can supply Grade 2 seamless and welded titanium tubes in standard or custom dimensions, with annealed condition, dimensional inspection, PMI, eddy current or hydrostatic testing, and EN 10204 3.1 MTC available for bulk industrial orders.
GR2 Titanium Tube Manufacturing Process
GR2 titanium tube is manufactured through controlled forming, heat treatment and finishing processes to achieve the required dimensions and surface quality.
Raw Material – Grade 2 titanium billet or strip is selected according to the required specification.
Tube Forming – The material is pierced and processed for seamless tubes, or formed and welded for welded tubes.
Cold Working – Cold rolling or drawing is used to control the OD, wall thickness and surface finish.
Annealing – Heat treatment relieves processing stress and restores the required ductility.
Sizing & Straightening – Tubes are sized and straightened to meet dimensional requirements.
Surface Finishing – Pickling, cleaning or bright finishing is applied according to the required surface condition.
Testing & Inspection – Dimensional inspection, PMI, eddy current or hydrostatic testing and other specified tests are performed before shipment.
Custom GR2 Titanium Tube
JUDE STEEL supplies custom GR2 titanium tubes (UNS R50400) for heat exchangers, condensers, chemical equipment and marine applications. We can manufacture or process tubes to your required outside diameter, wall thickness and length.
Custom services include cut-to-length, bending, U-tube processing, end preparation and surface finishing. PMI, dimensional inspection, eddy current testing, hydrostatic testing and EN 10204 3.1 MTC are available for bulk industrial orders.
Send us your OD × WT × length, quantity, ASTM B338 requirements and inspection specification for a project quotation.
GR2 Titanium Tube Applications
GR2 titanium tube (UNS R50400) is widely used where excellent corrosion resistance, low density and good formability are required. Typical applications include:
Heat Exchangers – Heat exchanger tubing, condenser tubes and evaporator tubes.
Chemical Processing – Process piping and equipment exposed to corrosive chemicals.
Desalination – Seawater systems, evaporators and desalination equipment.
Marine Industry – Seawater piping, cooling systems and marine heat exchangers.
Power Generation – Condenser and cooling-water tubing.
Chlor-Alkali Industry – Equipment and piping exposed to chloride-containing environments.
Oil & Gas – Corrosion-resistant tubing and process equipment.
Pulp & Paper – Process equipment and piping requiring resistance to corrosive media.
Pharmaceutical & Food Processing – Corrosion-resistant process equipment where clean surfaces are required.
GR2 Titanium Tube vs Grade 1 Titanium Tube
| Property | GR2 Titanium Tube | Grade 1 Titanium Tube |
|---|---|---|
| Material | Commercially Pure Titanium | Commercially Pure Titanium |
| UNS | R50400 | R50250 |
| Strength | Higher | Lower |
| Tensile Strength | ≥ 345 MPa | ≥ 240 MPa |
| Yield Strength | ≥ 275 MPa | ≥ 170 MPa |
| Elongation | ≥ 20% | ≥ 24% |
| Formability | Good | Excellent |
| Corrosion Resistance | Excellent | Excellent |
| Weldability | Excellent | Excellent |
| Weight | Low | Low |
| Typical Use | Heat exchangers, condensers, chemical equipment, seawater systems | Heat exchangers, chemical processing, low-stress applications |
| Best Choice | When higher strength is required | When maximum ductility and formability are preferred |
Why Choose JUDE STEEL?
Grade 2 Titanium Tube Supply – We supply GR2 Titanium Tube / UNS R50400 titanium tubing for industrial and heat exchanger applications.
ASTM B338 Compliance – Tubes can be supplied according to ASTM B338 / ASME SB338 requirements for condensers, evaporators and heat exchangers.
Seamless & Welded Options – Choose Grade 2 seamless titanium tube or welded titanium tubing according to application and project specifications.
Custom Dimensions – We provide custom OD, wall thickness and length, as well as cut-to-size tubes for engineering projects.
Heat Exchanger Tube Expertise – Suitable for heat exchangers, condensers, evaporators, desalination and chemical processing equipment.
Custom Tube Processing – Available services include cutting, bending, U-tube processing and end preparation according to drawings or project requirements.
Quality Inspection – PMI, dimensional inspection, eddy current testing, hydrostatic testing and visual inspection can be arranged according to the purchase specification.
MTC & Traceability – EN 10204 3.1 Mill Test Certificate can be provided with chemical composition, mechanical properties and inspection results for bulk orders.
Bulk Industrial Supply – JUDE STEEL focuses on wholesale Grade 2 titanium tubing and project procurement, providing export packaging and delivery support for overseas customers.
FAQ
Q1. What is GR2 Titanium Tube?
A: GR2 Titanium Tube is commercially pure Grade 2 titanium tubing, also known as UNS R50400 titanium tube. It offers excellent corrosion resistance, good strength and good ductility.
Q2. What is the ASTM standard for Grade 2 titanium tube?
A: ASTM B338 is commonly used for Grade 2 titanium tubes for condensers, evaporators and heat exchangers. ASME SB338 can be specified for ASME applications.
Q3. What is the UNS number of Grade 2 titanium?
A: The UNS designation for Grade 2 titanium is R50400.
Q4. What is the difference between Grade 1 and Grade 2 titanium tube?
A: Grade 2 titanium has higher strength, while Grade 1 provides higher ductility and formability. Both offer excellent corrosion resistance.
Q5. Is GR2 titanium tube suitable for heat exchangers?
A: Yes. Grade 2 titanium heat exchanger tube is widely used in condensers, evaporators and heat exchangers, particularly where corrosion resistance is important.
Q6. Is Grade 2 titanium tube suitable for seawater?
A: Yes. GR2 titanium has excellent resistance to seawater and chloride-containing environments, making it suitable for desalination, marine and seawater cooling systems.
Q7. Is GR2 titanium tube seamless or welded?
A: Both seamless and welded Grade 2 titanium tubes can be supplied depending on the application, dimensions and applicable specification.
A8. What sizes of GR2 titanium tube are available?
A: JUDE STEEL can supply different outside diameters, wall thicknesses and lengths, including custom dimensions according to drawings or project requirements.
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