H&W Investment Material (20kg Powder + 3Ltr Special liquid)

H&W Phosphate- Bonded Investment is a fine grain phosphate investment, which mainly used for partial-dentures, framework, dental holder, bridges and Co-Cr Alloy Casting.

COMPOSITION

• Crystalline Silica Quartz
• Crystalline Silica Cristobal
• Monoammonium Phosphate

Features

• Have a Fine Particle Size to give smooth surface on the casting.
• Easily manipulated with enough working time.
• Have Enough strength  at room temperature to permit ease in  handling.
• Have enough strength at higher temp. to withstand impact force of the molten metal.
• Break away easily from the surface of the metal
• With stand high temperature without decomposing time.

Key Specifications

• Best use temperature : 21-25 degree C
• Powder / Liquid Ratio : Powder : Liquid = 100g:23 ML
• Mixing Time : 60 sec in Vac
• Operate Time: about 4-5 miuntes
• Final Setting Time: about 4--60 minutes
• Expansion rate: The Expansion rate of Phosphate bonded investment material may be adjusted  by altering the ratio of expansion liquid to water, we can therefore state that :

1. Pure Liquid gives the maximum setting expansion, meaning the largest casting.
2. Diluting the liquid with water will result in the reduction of the setting expansion resulting in  sm

Package Details:

• 20kg Powder
• 3Ltr special liquid/carton Binder for Investment Material