Hafnium rod and bar, ASTM B737, high-purity material for nuclear and high-performance uses

Niobium Rod – Bar

Key Advantages

Precision customization: Round, square, hex, rectangle and wire; dimensions to drawing; tight tolerance control; small-batch sampling available.
High-temperature & corrosion resistance: Stable in harsh chemicals and elevated temperatures; suitable for superconducting and chemical environments.
Structural reliability: High melting point and good formability support demanding aerospace and high-stress service.
Process control & QA: Forging, rolling, swaging with full corrosion, EC, mechanical and microstructure testing for low defect rates and high straightness.

Primary Applications

Superconductor industry: Critical components for high-performance magnets and superconducting systems.
Chemical processing: Corrosion-resistant vessels, fittings and piping elements.
Aerospace & aviation: Engine parts, fasteners and structural components exposed to thermal cycling.

Testing (Typical)

Corrosion testing
Eddy current testing
Mechanical tests (tensile, yield, elongation)
Microstructure examination

Send your specifications (grade, size, quantity) — quotation and lead time within 12 hours. Trial orders with flexible MOQ are supported for evaluation and qualification. All materials are supplied with EN 10204 3.1 MTC and full inspection documentation for export compliance.

Product Description

LuminaTitanium delivers precision-engineered niobium rod/bar in accordance with ASTM B392. With controlled grades, shapes, sizes and finishes, plus excellent high-temperature and corrosion performance, our niobium bars are well suited for superconducting devices, chemical equipment and aerospace structures.

Technical Specifications

Parameter	Details	Why It Works for You
Standard	ASTM B392	Recognized specification for niobium rod/bar
Grades	R04200, R04210	Stable properties for superconducting, chemical and aerospace uses
Shapes	Round, square, hex (A/F), rectangle, wire	Covers structural, precision and magnet applications
Dimension range	Customizable	Matches drawings; reduces secondary machining
Surface	Black, pickled, sand-blasted, polished	Balances corrosion resistance, cleanliness and aesthetics
Packing	Seaworthy or custom	Protects rods for export and long-distance transport
Third-party inspection	Acceptable	Additional assurance for critical projects

Chemical Requirements (Max. Weight %)

Element	R04200	R04210	R04251 (1% Zr)	R04261 (1% Zr)
C	0.010	0.010	0.010	0.010
O	0.015	0.025	0.015	0.025
N	0.010	0.010	0.010	0.010
H	0.0015	0.0015	0.0015	0.0015
Fe	0.005	0.010	0.005	0.010
Mo	0.010	0.020	0.010	0.050
Ta	0.100	0.300	0.10	0.50
Ni	0.005	0.005	0.005	0.005
Si	0.005	0.005	0.005	0.005
Ti	0.020	0.030	0.020	0.030
W	0.030	0.050	0.030	0.050
Zr	0.020	0.020	0.8–1.2	0.8–1.2
Nb	Remainder	Remainder	Remainder	Remainder

Mechanical Requirements (Annealed)

Grade (UNS)	Tensile Strength min.	Yield Strength min.	Elongation min.
R04200 / R04210	18000 psi (125 MPa)	10500 psi (73 MPa)	26%
R04251	28000 psi (195 MPa)	18000 psi (125 MPa)	20%
R04261	28000 psi (195 MPa)	18000 psi (125 MPa)	20%

Ordering Checklist

Standard & grade: ASTM B392; specify R04200 / R04210 (and R04251 / R04261 if applicable)
Shape & size: round/square/hex/rectangle; diameters, lengths, tolerances; straightness requirements
Surface finish: black, pickled, sand-blasted or polished
Testing & QA: corrosion, EC, mechanical, microstructure; third-party witnessing if needed
Documentation: MTC EN 10204 3.1; inspection reports; RoHS/REACH on request
Quantity & packaging: batch size; bundling/boxing; export packing requirements
End use: superconducting, chemical, aerospace, etc., to confirm optimal grade and finish