WIRONIUM® extrahart

Cobalt-chrome partial denture alloy

  • Ideal when an alloy with higher strength is required
  • Very slender designs possible – for high patient comfort
  • Reduced carbon content – particularly well suited for laser welding
  • Biocompatible and corrosion-resistant
Composition in % by mass
Co 61.0 · Cr 30.0 · Mo 5.0 · Mn 2.0 · Si 1.0 · C · N
Alloy characteristics Standard values
Type (ISO 22674) 5
Density 8.2 g/cm3
Preheating temperature 950–1050 °C
Solidus, liquidus temperature 1360, 1395 °C
Casting temperature approx. 1450 °C
Young’s modulus 230 GPa
Proof strength (Rp0.2) 735 MPa
Elongation after fracture (A5) 15 %
Vickers hardness 345 HV10

ISO 22674

Availability Contents REF
WIRONIUM® extrahart (is only supplied to I.W.C. laboratories) 1000 g 50175

ISO 22674

Accessories Contents REF
Wiroweld CoCr laser wire, carbon-free, Ø 0.35 mm 2 m – 1.5 g 50003
Wiroweld CoCr laser wire, carbon-free, Ø 0.5 mm 1.5 m – 2 g 50005
Cobalt-chrome solder 4g 52520

ISO 22674

Contact / Service

BEGO USA Inc.
24 Albion Road
Suite 103
Lincoln, RI 02865

Phone: 800 342 2346
Cell: 774 571-0395
Fax: 401 334-9265
E-Mail: info@begousa.com

Images and illustrations are examples. Colors, symbols, designs, and information on the depicted labels and/or packaging may differ from reality.