Baoji Refractory metal Developer Co.,Ltd is one of the leading China niobium machining manufacturers and suppliers,Website:http://www.rmd1994.com, and as a professional company we have productive factory, welcome to wholesale niobium machining products from us. ² Products Properties: — High melting point—2468℃ — High boiling Point—4742℃ —Low vapor pressure —Good cold processability —Excellent chemical stability —High dielectric constant —Excellent resistance to electrochemical corrosion ² Chemical Composition: Chemistry %GradeNbImpurities maxZrTiCNOHTaFeSiWNiMoCrNb1Remainder0.020.0020.010.0150.0150.0010.100.0050.0050.030.0050.0100.002Nb2Remainder0.020.0050.020.050.0250.0050.250.030.020.050.010.0500.01² Specification:BoltsM6(30mm,35mm),M8(15mm,30mm,35mm), M10(30mm,35mm), M12(30mm, 35mm)NutM6, M8, M10, M12Cushion ringM6, M8, M10, M12CrucibleAccording to customer’s drawingsOtherSupplied in according to customer’s requirement