Alumina Tri-Hydrate (ATH)

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Description

GNPGraystar’s ATH has a unique particle size distribution that provides the best possible combination of viscosity, flame, electrical, and molding properties that can be derived from an ATH filler. A closely controlled top size with a large super fine faction yields rapid dispersion in resin. Excellent mold flow and wet-out characteristics result in superior surface profile, minimal porosity, even pigmentation, and excellent filler and reinforcement distribution throughout the molded part.

This material data has been provided by GNPGraystar Specialty Materials.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

All categories

Properties

General

Property	Temperature	Value	Comment
Bulk density		0.65 - 1.0 g/cm³ Show Supplier Material materials with Bulk density of 0.65 - 1.0 g/cm³	respectively for loose and packed
Loss on Ignition		34.6 % Show Supplier Material materials with Loss on Ignition of 34.6 %	at 1000°C
Particle size range		9.0 µm Show Supplier Material materials with Particle size range of 9.0 µm
Relative density		2.42 [-] Show Supplier Material materials with Relative density of 2.42 [-]
Specific surface area		2.0 m²/g Show Supplier Material materials with Specific surface area of 2.0 m²/g	BET
Water content	105 °C	0.3 % Show Supplier Material materials with Water content of 0.3 %

Chemical properties

Property	Value	Comment
Aluminium	99.6 % Show Supplier Material materials with Aluminium of 99.6 %	Al(OH)₃
Iron	0.007 Show Supplier Material materials with Iron of 0.007	Fe₂O₃
Silicon	0.005 Show Supplier Material materials with Silicon of 0.005	SiO₂
Sodium	0.03 Show Supplier Material materials with Sodium of 0.03	Soluble sodium oxide
	0.24 Show Supplier Material materials with Sodium of 0.24	Na₂O

Technological properties

Property

Application areas

GNPGraystar’s ATH was developed especially for SMC, BMC, resin injection, and high solids coatings.

Other

Screen Analysis:

on 325 mesh: 0.1 %

through 325 mesh: 99.9 %

Less than 10µm: 53%

TAPPI Brightness: 89

Oil absorption: 28 ml, boiled linseed oil per 100 gm filler

Alumina Tri-Hydrate (ATH)

Description

Ashby charts

Materials by this supplier

Properties