Harvest Dental Super Peg II Refractory Material
Harvest Dental Super Peg II refractory material used in dental laboratory porcelain and investment procedures. Catalog code 8510.
Harvest Dental Super Peg II Refractory Material is a refractory investment from Harvest Dental. Manufacturer part number 8510.
Find it on our Investment & Casting shelf, under Investments.
Orders placed before 3 PM ET ship the same day when the item is on our shelf (otherwise within 3 business days), and ground shipping is free over $10.
Product
- Manufacturer
- Harvest Dental
- Manufacturer #
- 8510
- Item code
- 030-0009
- UPC / Barcode
- 8510
Catalog path
- Marketplace
- Laboratory
- Category
- Investment & Casting
- Subcategory
- Investments
Ordering
- Status
- Sold out
Other in-stock items in Investments
Not the same product — check the specs before you swap.
Questions
What is it used for?
Harvest Dental Super Peg II refractory material used in dental laboratory porcelain and investment procedures.
When does it ship?
In-stock orders placed before 3 PM ET ship the same day; anything not on our shelf ships within 3 business days.Ground shipping is free over $10.
About refractory investment
A refractory investment is an investment material that can withstand the high temperatures used in soldering or casting. A refractory cast is a cast made of a material that will withstand high temperatures without disintegrating.
A dental casting investment is a material consisting principally of an allotrope of silica and a bonding agent. The bonding substance may be gypsum, for lower casting temperatures, or phosphates and silica, for higher casting temperatures. In the lost-wax technique a wax pattern is surrounded with a refractory slurry that sets, the pattern is removed by heat, and metal or ceramic is cast into the mold that is left.
ISO 15912 covers casting investment, brazing investment, pressable-ceramic investment and refractory die materials, and classifies them by intended use and by the burn-out procedure the manufacturer recommends.
How the investments and duplicating materials on this shelf differ
- Universal Investment — Phosphate-bonded powder and its mixing liquid, sold for more than one kind of casting.
- Chrome Investment — For partial denture frameworks cast in a higher melting alloy.
- Pressable Ceramic Investment — The mold material for pressed ceramics, not for cast metal.
- Refractory Investment — Material for casts, dies and pegs that must go through the furnace.
- Duplicating Materials & Flasks — Gels, silicones and flasks for copying the master model in investment.
- Duplicating & Die Silicone — A silicone that makes the flexible mould of the master model.
What to look at when choosing an investment
Binder and temperature: gypsum is not chemically stable above 650 °C, so gypsum-bonded investments are typically restricted to castings of conventional gold alloys.
Expansion: high setting expansion has been reported for phosphate-bonded materials, more when they are mixed with a silica sol, the special liquid, than with water. Setting expansion was found to be sensitive to mixing speed and to the liquid to powder ratio.
Strength: investments are brittle and may fracture at clamping points.
Burn-out: ISO 15912 classifies investments by intended use and by the burn-out procedure the manufacturer recommends.
Sources: The Glossary of Prosthodontic Terms, 9th edition (J Prosthet Dent 2017) · ISO 15912:2016, Dentistry — Casting investments and refractory die materials · Diametral tensile strength of phosphate-bonded investment material under four drying methods, 2019 (PMC6685339) · ISO 14356:2024, Dentistry — Duplicating material · Fit of cast removable partial denture frameworks and the storage of wax patterns, 2015 (PMC4678543)
