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Composition Materials Co., Inc. - Walnut Shell and Agrashell Products
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Walnut Shells / Agrashell Products
- Black Walnut Shell Grit
- English Walnut Shell Grit & Flour
- Pecan Shell Grit & Flour
- Apricot Shell Grit
Composition Materials pioneered Walnut Shell abrasive blasting with the US Navy in the 1950's. Aircraft carriers and submarines were stripped of only their top coats, leaving the expensive undercoats undisturbed. Prior to the introduction of shell blasting, coatings were removed to bare metal requiring the replacement of the undercoat, the vinyl coat, and the top coat. The idea of SELECTIVE COATING REMOVAL with a soft abrasive originated here and saved the Navy both time & money .
With Composition Materials' partner SHELLPRO's acquisition of Agrashell in 2002, they became the largest manufacturer of shell products and Composition Materials became the largest supplier in the world. Their consulting service is available to you regarding the use of Walnut Shell Grit, Plasti-Grit, or other members of their SOFT ABRASIVE family of products.
The following are their standard grades for walnut shell blasting.
Walnut Shell Grit
(Black and English)
- AD-1B (6/10)
- AD-2.5B (8/12)
- AD-3B (12/20)
- AD-4B (14/30)
- AD-6B (18/40)
- AD-7B (35/60)
- AD-9B (40/100)
- AD-10.5B (60/200)
Composition Materials started business in 1923 with a line of Fillers & Extenders. Walnut Shell Flour has many attributes which recommend it as a filler for adhesives and plastics compounding. Filler grades include the following.
Walnut Shell Flour
- WF-3 (-100)
- WF-5 (-200)
- WF-7 (-325)
- WF-9 (-400)
The Cosmetics industry has adopted the use of Shell Grits and Flours in the manufacture of high quality facial scrubs, soaps, and creams. Composition Materials is the premier manufacturer of the quality Shell products required for this demanding industry. The following are their special grades for this industry.
Cosmetic Shell Grades
- AD-7 Cosmetic
- AD-9 Cosmetic
- AD-10.5 Cosmetic
Typical Properties
Specific Gravity 1.35
Bulk Density (lbs./ft3) 40
Ph Value at 25°C (in water) 5
Free Moisture (80° for 15 hrs.) 2-8%
Flash Point (closed cup) 380°F
Oil Absorption 55-60%
Ash Content 0.5%
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