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DuPont Staurolite Products

Staurolite® is a name for a variety of loose mineral abrasive grains that the duPont Co. domestically manufactures. These Staurolite Products are used for various applications, the most popular of course being surface preparation for a coating on steel. There are approximately 5-6 products that are available in the duPont Staurolite Products group. The most widely used abrasive grain is Starblast® which provides a 1.8-2.2 mil profile on either new or lightly coated or rusty steel. Starblast is very popular with painting contractors because of the product’s low dust and fast cutting qualities. Starblast is also 95% free of silica. The coarsest product in the Staurolite Products group is appropriately called Coarse Staurolite®. Coarse Staurolite is the most aggressive product in the Staurolite Products group. Starblast® Ultra, a fairly new product from duPont, is a mixture of Starblast and Coarse Staurolite. Starblast Ultra is an aggressive, extremely efficient and more readily available abrasive grain.  Yet another product from duPont, Starblast®XL, contains less than 1% free silica and it is approved for dry-blasting at U.S. Naval shipyards.  Finally, Biasill®, the finest abrasive grain in the Staurolite Products group, is excellent where low mil profiles are needed and has also been used in wet-blasting applications on surfaces such as brick and aluminum.

Available Grades

Packaging:  50 Lb. bags, 4,000 Lb. Supersacks, or Bulk Trucks.

Steel Shot/Grit

Steel grit and shot is used in many applications most of which are either blast cleaning or shot peening. As a blast cleaning abrasive, usually steel grit is used to remove various types of surface contaminants from a wide array of steel or foundry products. In a peening application, steel shot is used to provide compressive strength to torque or load bearing metal parts such as jet engine turbine blades, automotive springs, or heavy equipment crankshafts. Steel shot and grit is available in varying degrees of hardness, however the vast majority of metal abrasives that are used are in the 41-51 HRC hardness range. During the manufacturing process, this steel shot and grit is subjected to very intricate quality control measures , probably the most stringent in the metal abrasives industry.

• Steel Shot
  S70, S110, S170, S230, S280, S330, S390, S460, S550, S660, S780
• Hardness:
  1. S hardness – 90% minimum 402-558 Knoop (40-51 HRC)
     
• Steel Grit
  G120, G80, G50, G40, G25, G18, G16, G14, G12, G10
• Hardness:
  1. S hardness – 90% minimum 402-558 Knoop (40-51 HRC)
  2. M hardness – 90% minimum 495-650 Knoop (47-56 HRC)
  3. L hardness – 90% minimum 612-754 Knoop (54-61 HRC)
  4. H hardness – 90% minimum 732 Knoop (60 HRC)

Packaging:  50 Lb. Bags, 55 Gallon Steel Drums (2,000 lbs For Shot;  Approximately 1,700 Lbs. For Grit)

Please Call For Pricing On Larger Quantity Quotations And For Additional Hardness Specifications

Walnut Shells

A relatively soft nut shell abrasive for removal of undesirable coatings without etching, scratching or marring the surface.  The walnut shell particles are tough and possess high strength but are not abrasive in character. Also, walnut shells won’t generate much dust and can be used with most types of blast equipment.  Another excellent biodegradable abrasive, look for this material to clean sensitive surfaces while not imparting a profile.

• Deflashing
• Tumbling
• Blasting turbine blades
• Cleaning plastic molds
• Stripping paint from wood

Packaging
50 Lb. Bags

Available Grades
8/12, 12/20, 14/30, 20/40, 35/60, 40/100, 60/200