Fecral heating wire: Ocr27al7mo2, ocr21al6nb, ocr21al6, ocr25al5, ocr23al5, ocr21al4, 1cr13al4. Nichrome heating wire: Cr20ni80, cr30ni70, cr15ni60, cr20ni35, cr20ni30. Product forms and size range Round wire 0.010-12 mm (0.00039-0.472 inch) Other sizes are available on request. Ribbon (flat wire) Thickness: 0.023-0.8 mm (0.0009-0.031 inch) Width: 0.038-4 mm (0.0015-0.157 inch) Width/thickess ratio max 60, depending on alloy and tolerance Other sizes are available on request. Get lowest price , pls contact us.