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Carbon-free, non-precious, type 4 bonding alloy according to ISO 16744 and ISO 9693 for crowns and bridges, also suitable as universal alloy for wide-span telescopic cases and delicate superstructures. The dispersion with Niobium which is known to build a fine-grain structure results in good polishability and a rich shine. The lack of carbon prevents carbide precipitation and, thus, guarantees crackfree laser welds.
 | High stability/stiffness, but nevertheless easy to work (HV10 310) |
| Dense, homogeneous surface offering easy polishing and a rich shine thanks to Niobium |
| Good-natured to the final bake, fine-grain, strain-free |
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Downloads
(B=Brochure / U=User manual)
Girobond NBS Packaging
781610 Girobond NBS 1.000 g
781611 Girobond NBS 50 g
781630 Girosolder 3,6 g
781560 Soldering paste 25 g tin
Girobond NBS can be melted using any standard
procedure of dental technology, e.g. flame,
high-frequency, electric arc.
Technical and physical data
Melting range Solidus: 1.350°
Melting range Liquidus: 1.422°
Tensile strength Rm [MPa]: > 840
Proofstress Rp 0,2 % [MPa]: > 600
Modulus of elasticity E [GPa]: 210 + – 10
Elongation at rupture A [%]: > 10
Vickers hardness: 310 + – 10
Density [g/cm3]: 8,6
WAK [25-500° C]: 14,1 x 10-6K-1
Alloy color: silver
Oxid color: grey
Tested for biocompatibility and corrosion resistance according
to DIN EN ISO 10271, cytotoxity test as per ISO 10993-5
through the Institute for Dental Material Testing at the
University Dental Clinic in Tuebingen/Germany
(Prof. Dr. Geis-Gerstorfer).
Chemical composition in % by mass
Cobalt: 62,5
Chrom: 25,5
Molybdän: 5
Wolfram: 5
Silizium: 1
< 1: Nb, Fe, N Nb (Beryllium- and carbon free)
