Project Description
Product Description
Titanium Grade 3 (UNS R50550, DIN 3.7055) is a medium-strength commercially pure titanium with enhanced mechanical properties compared to lower grades. Featuring 98.7-99.5% titanium content, this alloy demonstrates superior corrosion resistance in aggressive environments. FUSHUN METAL supplies Grade 3 titanium tubes for critical applications in aerospace, marine systems, and high-pressure industrial equipment.
Applications
Grade 3 titanium pipes/tubes are engineered for:
- Deep-sea drilling riser systems
- Nuclear reactor cooling conduits
- High-pressure hydraulic lines
- Chemical reactor heat exchangers
- Submarine pipeline networks
Standards
Manufactured to international specifications:
- Europe: DIN 17860, EN 10204-3.1
- America: ASTM B338, ASME SB338
Chemical Composition
Primary elemental composition ranges:
- Titanium (Ti): 98.7-99.5%
- Iron (Fe): 0.15-0.30%
- Oxygen (O): 0.25-0.35%
- Nitrogen (N): ≤0.05%
- Carbon (C): ≤0.08%
- Hydrogen (H): ≤0.015%
Mechanical Properties
Tube-specific performance characteristics:
- Tensile Strength: 450-600 MPa
- Yield Strength: 380-520 MPa
- Elongation: 18-25%
- Hardness: 150-200 HV
Production Sizes
Available in seamless and welded configurations:
- Outer Diameter: 8mm – 406mm
- Wall Thickness: 0.8mm – 30mm
- Length: Custom cuts up to 15 meters
Why Choose FUSHUN METAL
Specializing in Grade 3 titanium tubular solutions:
- NDT-certified (UT/RT) tube inspection
- Hot extrusion capability for thick-walled tubes
- PMI testing for material verification
- ASME BPV Code compliant products
Contact our technical experts to optimize your titanium tube specifications. Submit your inquiry for project-specific solutions and competitive pricing.
Grade 3 titanium tube data
Grade 3 is the grade to quote when the duty is pressure tubing and components needing higher strength than Grade 2 at similar corrosion resistance. The mechanical values above are the ASTM B338 minima, so a mill certificate that meets them can be released against either the tube or the pipe specification depending on the product form ordered.
| Grade / UNS | Grade 3 / UNS R50550 (DIN 3.7055) |
| Composition | Commercially pure titanium, O ≤ 0.35 %, Fe ≤ 0.30 % |
| Product standards | ASTM B338 (seamless and welded tube); ASTM B861 (seamless pipe); ASTM B862 (welded pipe) |
| Minimum tensile strength | 450 MPa min |
| Minimum yield strength (0.2 %) | 380 MPa min |
| Minimum elongation | 18 % min |
| Size range | 8 – 406 mm OD, 0.8 – 30 mm WT |
| Delivery condition | Annealed; pickled or bright annealed, straight lengths or coils |
| Testing | Hydrostatic or pneumatic test, eddy current; tensile and chemistry per heat |
| Certificate | EN 10204 3.1; 3.2 and third-party inspection on request |
Titanium is priced per kilogram but sold per metre, and the two do not track each other when the wall changes. Send OD × wall, length and the test standard, and the offer will state both the theoretical weight per metre and the price basis so the two can be compared across suppliers.