Wironit® extrahart 250 g

• Due to its high proof strength and ultimate strength, this alloy is ideally suited for combination work

• Outstanding casting properties thanks to the special composition with silicon and carbon

• Very low thermal conductivity of the alloy emphasises the wearing comfort of the prosthesis

• Biocompatible and corrosion-resistant

• Item name

  Wironit® extrahart
• Iso type ISO22674

  5
• Elastic modul

  185 GPa
• Vickershardness

  385 HV10
• Product description

  Cobalt-Chromium partial denture alloy
• Liquidustemp.

  1390 °C
• Solidustemp

  1260 °C
• Density g/cm³

  8,2 g/cm³
• Composition

  Co 63,0 · Cr 30,0 · Mo 5,0 · Si 1,0 · Mn 1,0 · C
• Preheat temp. to

  1050 °C
• Preheat temp. from

  950 °C
• Color code

  8
• Base metall

  Cobalt
• Content/amount

  250 g pack
• Yield strength

  635 MPa
• Tensile strength

  900 MPa
• Elongation at break

  8 %
• Casting temperature

  1420 °C