NICRALLIUM® N7 discs are made of a non-precious, nickel- and beryllium-free, type 5 cobalt-based dental alloy for metal-ceramic restorations.. Lire plus

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NICRALLIUM® N7 discs are made of a non-precious, nickel- and beryllium-free, type 5 cobalt-based dental alloy for metal-ceramic restorations.

The presence of molybdenum allows the alloy to be stable at high temperatures, facilitating the bonding with the ceramic.

It can also be used for the manufacture of dental and orthopaedic implants.

NICRALLIUM® is a registered trademark of BCS.

  • MACHINING

Elements must be cut with tools adapted to the alloy.

  • SURFACE WORK OF THE ELEMENT

Work according to standards with clean and sound instruments. Blasting with 50u alumina using a non-recycled blasting machine is essential. The pressure should be 5 to 7 kg, the part should have a uniform matt appearance. The cleaning can be carried out with a steam jet (5 kg approximately) or 10-minute ultrasound in ethyl acetate or alcohol at 90°.

Remember to renew your bath.

Chemical composition

C
  • 0,3%
Si
  • 0.7%
Mo
  • 5.5%
Cr
  • 28%
Co
  • 64.4%
Mn
  • 0.6%
Other
  • 0.5%

Mechanical properties

DENSITY
8.40
HARDNESS
290 HV
MODULUS OF ELASTICITY
205 GPa
YIELD STRENGTH UNDER TENSION 0.2%
550 MPa
ULTIMATE TENSILE STRESS
750 MPa
ELONGATION AT BREAK
9%
MELTING RANGE SOLIDUS
1200 C°
MELTING RANGE LIQUIDUS
1380 C°
COEFFICIENT OF THERMAL EXPANSION FROM 20 TO 500°C
14.2 x 10-6
The above values are provided for indication purposes.