Technical itemReference specification
MaterialNiobium (Nb)
Diameter Range0.5–100 mm; availability depends on purity and production route
Precision Grade±0.01 mm reference tolerance
ToleranceApplication-specific; confirm with drawing or purchase specification
HardnessCondition-dependent; confirm metallurgical state and test method
DensityApproximately 8.57 g/cm³
Surface FinishApplication-specific finish and visual limits by agreement
Roundness / SphericityApplication-specific; confirm before quotation
Temperature ResistanceApplication, load, atmosphere and material-grade dependent
Chemical ResistanceConfirm exact fluid, concentration, temperature and exposure time
PackagingBulk, small-quantity, container, bag, carton, export pallet or customized packing
Purity / Grade≥99.9% typical; high-purity and project-specific chemistry by review
Tolerance±0.01 mm reference; drawing-defined precision by review
Melting PointApproximately 2477°C
Surface FinishMachined, ground, lapped or polished; clean packing by agreement
Corrosion ResistanceExcellent in selected environments; verify the exact chemical and service conditions
BiocompatibilityExcellent reference characteristic; medical use requires device-specific validation
ApplicationsMRI systems, particle accelerators, aerospace, medical devices and high-strength alloys
PackagingClean vials, trays, sealed bags, cartons or qualification-specific packs