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Heraenium® NA - for C&B
Heraenium® NA - for C&B

Heraenium® NA - for C&B

NON PRECIOUS METAL ALLOYS FOR CROWN AND BRIDGEWORK Heraenium NA NiCr – non precious alloy

Specifications

Product details
Composition
(content in mass %)
Ni 59.3
Cr 24.0
Mo 10.0
Mn 1.5
Si 1.2
Ta 1.5
Fe 1.5
Nb 1.0
Type 4 (s/k)
Shade White
Indication Crowns
Bridges
Milling technique
Article Code
Technical data, melting and casting
Melting range (1) Solidus 1220°C
Liquidus 1300°C
Preheating Temperature 850°C
Casting Temperature 1450°C
Crucible Ceramic NPM
Density (1) 8.3 g/cm3
Hardness, HV5 200 HV 10 (w/k) / – /190 HV 10 (s)
0.2 % proof stress(1), MPa(2) 360 (w/k) / –
Elongation(1) % 30 (w/k) / -
Elastic modulus(1), GPa(2) 222
Ceramic firing
CTE 14.1
Oxide firing 950°C / 10 min. (3)
Soft annealing --
Processing after oxide firing Sandblasting with 125 µm Aluminium Oxide
Cooling after ceramic firing (Relexation cooling is recommended for lang span, bulky frameworks) HeraCeram: Rapid cooling
At the end of the program the firing platform is completely and firing tray with objects is removed immediately. The firing tray can cool next to the furnace on a fire-resistant tray.
Others: Normal cooling (Stress relief cooling)
The firing platform is driven down at the end of the program and the firing tray is left in the radiated heat for 2 – 3 minutes before it is removed.
Hardening --
Prior to Ceramic Firing
Solder Suitable dental NiCr basic solders according to EN ISO 9333
Solder colour: grey
After Ceramic Firing
Solder Stahlgold Lot 750
Flux** Work. temp. * 750°C / Solder colour: grey
Alloy also available as Laser weiding wire
Suitable dental NiCr laser welding wires according to EN ISO 28319

Specification legend

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  • HeraCeram® NP-Primer

    HeraCeram® NP-Primer

    For processing HeraCeram and HeraCeramSun on NPM alloys.