Precision customization: Round, square, coil and U-shape; seamless or welded; sizes made to drawing; small-batch sampling supported.
High-temperature & corrosion resistance: Performs in aggressive atmospheres and elevated temperatures for steel, ceramics, nuclear and superconducting systems.
Electrical performance: Stable conductivity and low-temperature behavior for superconducting and electronic applications.
Process control & QA: Eddy current, flaring/flattening, mechanical, microstructure and ultrasonic testing for critical projects.
Steel & ceramics: High-temp furnace components, linings and structural supports.
Electronics & superconductors: Conductive and structural tubes, magnet components, cryogenic systems.
Nuclear energy: Cooling lines, structural tubes and radiation-related components in demanding environments.
Eddy current testing
Flaring and flattening tests
Mechanical tests (tensile, yield, elongation)
Microstructure examination
Ultrasonic testing
Packaging: Standard seaworthy wooden cases or custom protective packing to prevent impact, bending and contamination.
Shipping: Global courier or sea freight; lead times coordinated with your project schedule.
LuminaTitanium supplies high-performance niobium tube/pipe manufactured to ASTM B394. Available in seamless and welded forms, round/square/coil/U-shape configurations and custom dimensions, these tubes offer excellent high-temperature strength, corrosion resistance and electrical stability for steel, ceramics, electronics, superconductors and nuclear applications.
| Parameter | Details | Why It Works for You |
|---|---|---|
| Materials | R04200, R04210, R04251, R04261 | Covers unalloyed and Zr-alloyed niobium for critical service |
| Standard | ASTM B394 | Recognized specification for niobium and niobium-alloy tubes |
| Form | Round, square, coil, U-shape | Fits straight runs, coils and U-tube layouts |
| Size | Custom per drawings | Matches exact design; minimizes secondary machining |
| Length | Standard & cut length | Aligns with equipment and system requirements |
| Technique | Seamless or welded | Seamless for high-pressure/critical duty; welded for cost efficiency |
| Surface | Polished or as specified | Meets corrosion, cleanliness and cosmetic needs |
| Packing | Seaworthy wooden case | Secure export protection |
| Property | Value |
|---|---|
| Density | 8.57 g/cm³ |
| Melting Point | 2468 °C |
| Boiling Point | 4742 °C |
| Thermal Conductivity | 0.537 W/cm·K @ 298.2 K |
| Electrical Resistivity | 12.5 μΩ·cm (approx., near room temperature) |
| Electronegativity | 1.6 (Pauling) |
| Specific Heat | 0.064 cal/g·K @ 25 °C |
| Heat of Fusion | 6.5 cal/g·mol |
| Grade | Chief (Nb) | Fe | Si | Ni | W | Mo | Ti | Ta | O | C | H | N |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nb1 | Remainder | 0.004 | 0.003 | 0.002 | 0.004 | 0.004 | 0.002 | 0.07 | 0.010 | 0.004 | 0.0012 | 0.002 |
| Nb2 | Remainder | 0.005 | 0.005 | 0.005 | 0.010 | 0.010 | 0.004 | 0.10 | 0.015 | 0.010 | 0.0015 | 0.010 |
| Grade (UNS) | Tensile Strength min. | Yield Strength min. | Elongation min. |
|---|---|---|---|
| R04200 | 18000 psi (125 MPa) | 10500 psi (73 MPa) | 25% |
| R04210 (Welded) | 18000 psi (125 MPa) | 8500 psi (59 MPa) | 25% |
| R04210 (Seamless) | 18000 psi (125 MPa) | 10500 psi (73 MPa) | 25% |
| R04251 | 28000 psi (195 MPa) | 18000 psi (125 MPa) | 20% |
| R04261 | 28000 psi (195 MPa) | 18000 psi (125 MPa) | 20% |
Standard & grade: ASTM B394; R04200 / R04210 / R04251 / R04261 or Nb1 / Nb2
Form & geometry: round / square / coil / U-tube; OD / WT / ID / length; exchanger or furnace layout if applicable
Technique: seamless or welded; design pressure and medium requirements
Surface finish: polished or specified roughness/cleanliness
Testing & QA: EC, flaring/flattening, mechanical, UT, microstructure; third-party witnessing if required
Documentation: MTC EN 10204 3.1; inspection reports; RoHS/REACH on request
Quantity & packaging: batch size; packing configuration; export wooden cases
End use: steel/ceramics, superconductors, nuclear, etc., to confirm optimal grade and configuration
