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    • Tantalio - Rondella

      Tantalum was discovered in 1802 by A.G. Ekeberg in Uppsala, Sweden. Tantalum is a shiny, silvery coloured metal which is heavy, dense, malleable and ductile when pure. It is found in small quantities in minerals (generally in conjunction with niobium), and is isolated by conversion to the oxide and then the fluoro-complex, K₂TaF₇, from which the pure metal is obtained by electrolysis. Tantalum is extremely corrosion resistant due to the formation of an oxide film, and is also resistant to acid attack (with the exception of HF). It will react with fused alkalis and a variety of non-metals at elevated temperatures. Tantalum can be used as a replacement for platinum for laboratory apparatus which has to have good corrosion resistance, and the metal is also used within the chemical industry for similar reasons. The fluids in the human body do not react with the metal and, hence, it is used for surgical implants without rejection. Other applications include the use of tantalum carbide in cemented carbides which are used as cutting tools. The pure metal is used in the electronics industry in the manufacture of various types of electronic equipment (e.g. rectifiers, capacitors, lamp filaments, etc.). Tantalum is also used in vacuum systems as it has a high absorption rate for residual gases. It is also used as an alloying element with, for example, nickel and molybdenum, to produce alloys which have good corrosion resistance, strength and ductility.

      Rondella - Un sottile, piatto pezzo di materiale con un foro nel mezzo, utilizzato in combinazione con bulloni e dadi per distribuire il carico di un dispositivo di fissaggio filettato.

    3 risultati

    Prodotto TA00-WA-000103 Tantalio - Rondella Misura M3 Thickness 0.5mm Diametro interno 3.29mm Diametro esterno 6.82mm Norma ISO 7089:2000 Quantity 1 Piece - 30 Piece
    Prodotto TA00-WA-000104 Tantalio - Rondella Misura M4 Thickness 0.8mm Diametro interno 4.39mm Diametro esterno 8.82mm Norma ISO 7089:2000 Quantity 1 Piece - 50 Piece
    Prodotto TA00-WA-000106 Tantalio - Rondella Misura M6 Thickness 1.6mm Diametro interno 6.51mm Diametro esterno 11.79mm Norma ISO 7089:2000 Quantity 1 Piece - 10 Piece
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