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Arloy for Vita (soft)


Arloy for Vita-Ni-Cr with Beryllium Non Precious Porcelain crown and bridge alloy Designed for all fine grain porcelain such as vita, crystal, shofu, etc Comparable in chemistry to Talladiurn V, Thermobond V, Ceradium, Pentillium, Rexillium V.

MAJOR COMPONENTS
 
NICKEL = 72.0% 
CHROMIUM = 15.0%
MOLYBDENUM = 9.0%
ALUMINUM = 2.0%
BERYLLIUM = 1.8%
IRON = < 1
SILICON = < 1 
CARBON = < 1

Note: % values are in weight percent and reflect nominal composition.


PHYSICAL PROPERTIES OF ARLOY
NON PRECIOUS CERAMIC ALLOY FOR VITA (SOFT)

Melting Range = 2200-2300°F (1205-1260°C)
Casting Temperature = 2500°F (1370°C)
Density = 7. g/cm3
Yield Strength = af=80,000 psi (550 MPa)
Elastic Modulus = 192 GPa
Elongation = af=9°/o
Vickers Hardness = af=200
Co-Efficient of Expansion @ 500°C = 13.6 x 105
Co-Efficient of Expansion @ 600°C = 14.0 x 105

af=after firing

INDICATIONS FOR USE:

ARLOY is a Nickel - Chromium based alloy acceptable for use in fabrication of dental prosthetics and reconstructions. Rx Only
 
 
TECHNICAL INSTRUCTIONS

MODELING: Maintain a minimum wax thickness of 0.3 to 0.4 mm. The wax pattern design should have lingual
collars and no sharp corners. Lingual eyelet rings help support tastings during firing.

SPRUING (SINGLE CROWNS):

Use direct sprues, 8-10 gauge, (3.3-2.6 mm diameter) and 1/2 in. (12 mm) long with adequate reservoirs. There should be no more than 1/4 in. (6 mm) of investment from the top of the pattern to the top of the investment.

SPRUING (MULTI-UNITS at BRIDGES):

Use a 6 gauge (4.1 mm diameter) runner bar, connecting the units to the bar with to gauge (2.6 mm
diameter) sprues 1/8 in. (3 mm) long and joining the bar to the sprue base with 8 gauge (3.3 mm
diameter) and 1,2 in. (12 mm) long sprues coming from adorned central entry point. re should be
no more than 1/4 in. (6 mm) of investment from the top of the pattern to the top of the investment.

INVESTING: Use debubblizer and blow off any excess before investing. Recommended Investment: Phosphate
Bonded (Carbon Free). Follow the manufacturers instructions.

BURNOUT: After adequate setup time, place the ring(s) in a room temperature oven and raise the temperature
to 1600"F (670°C) plus 10 minutes for each additional ring. it you are using a rapid fire investment,
follow the manufacturers instructions.

CRUCIBLE TVPE: Quartz or Zircon

TORCH CASTING: Wind the casting machine one more turn than you would for precious cerarnic alloys. A quartz or
zircon crucible is necessary. Use a propane/oxygen torch with a multi-orifice tip. Do not use flux.
Place the alloy lat least 50% new metal) in a preheated crucible. Keep the torch moving to heat oil
the metal in the crucible at an even rate. The individual ingots will not pool together to form a single
mass. Do not stir or rupture the oxide surface. When the flame appears to move the alloy, cast.
Alter casting bench cool before devesting.

INDUCTION OR ELECTRICAL CASTING:
When using induction casting machine, preheat the crucible. Set the arm speed to 400-450 rpm &
set the power to high and be sure that the all is pulsating and slumping. The casting temperature of automatic casting equipment should be set or 2500°F (1370°C) with a five seconds heat soak.

COOLING: Allow casting ring to cool to room temperature. DO NOT quench in water.
DIVESTING AND CLEANING:
Divest and sandblast with 50 micron aluminum oxide, be careful on margins.
FINISHING: Grind the metal surfaces tor porcelain application with non-contaminating aluminum oxide stones in one direction. Blast with non-recycled 50 micron aluminum oxide. Do not exceed a blast pressure of
4 bars or 60 psi. Clean in distilled water in an ultrasonic cleaner lot 10 minutes.

OXVDIZING OR DEGASSING:
120(H800°F (650-900°C), hold 0 min with Vacuum; Blue color indicates temp too LOW, Fled mo
HIGH. A straw yellow or even grey oxide is desired. Opaque directly on this oxide
A straw yellow or even grey oxide is desired. Opaque directly on this oxide.

PRESOLDER: Solder joints should be as large as possible (at least 5 mm‘). Soldering gap approximately
0.05-0.2 mm. The solder joints should be parallel and tree of debris. Preheat invested units aid
pressure blast with 50 micron just before soldering to remove oxide.If flux is used, it should be
water soluble. Use: P, NP, Flux-N-SOL

PORCELAIN APPLICATION:
Follow the recommendations of the porcelain manufacturer. For a better bond, fire a thin wash 10 — 15°F (10"C) above nominal temperature, followed by regular opaque coats.
We recommend drying paste opaque from the inside out; this is done by utilizing a hot plate. The
units are placed on a honeycomb sag they with metal pins. This is placed on top of the burner set a low to medium setting (approx. 250°F) it will take approximately 8-10 minutes or until the opaque turns chalky white or tiat color. Then place in furnace for entry and maturing.

POST SOLDERING AFTER  FIRING: Solder joints should be as large as possible (at least 5 mm2). Soldering gap approximately 0.05 - 0.2 mm. Cover creamically-veneered units with wax before investing. The soldering
investment should not come in contact with the ceramic. The soldering surfaces should be parallel, smooth and free of debris. Use: L0, R

LASER WIRE: LWNPNI

POLISHING: Use Tripoli and rouge or other similar products.

Caution:

- This alloy contains nickel and should not be used for individuals with
known nickel sensitivity
- Contains Beryllium. Inhalation of beryllium vapors and dust can cause
serious illness. Beryllium dust can be toxic - do not inhale. Grind and polish with
adequate ventilation only.
- Please use allow in accordance with the Rev. B. 01/19