Opta Waive
Opta Minerals Blast Cleaning Abrasives

Corn Cob Abrasive

Corn Cob Abrasive is a low-density granular product made from the hard woody ring of a corn cob. This organic product is an accurately screened and air-washed non-toxic media, and can be used both as an absorbent and abrasive. Corn Cob Abrasive is used to de-burr, burnish, de-flash and polish a wide variety of products, including:

  • Engine parts
  • Ball bearings
  • Nuts and bolts
  • Springs
  • Electric parts
  • Generators and rotors
  • Cutlery
  • Jewellery
  • Computer chips
  • Fiberglass
  • Aluminum

Corn Cob Abrasive can also be used as a gentle blast cleaner for larger applications where the underlying material should not be damaged or harmed, such as:

  • Cleaning of fire/smoke damage
  • Cleaning of wooden houses/barns before painting
  • Removal of graffiti from wood, stone or brick

Corn Cob Abrasive Photo

Advantages of Corn Cob

  • Wide range of grades available, including custom orders
  • Gentle – clean surfaces without damaging underlying material
  • Porous – can be used to absorb contaminants
  • Organic – renewable and environmentally friendly
  • 100% silica-free

Available Sizes:

MESH
10-14
14-20
20-40
30-60
Custom screened grades are available upon request

Technical Specifications

Symbol Name Percentage
O (Oxygen) 47%
C (Carbon) 44%
H (Hydrogen) 7%
N (Nitrogen) 0.4%
Traces (Loss on Ignition) 1.5%
SiO2 (Crystalline Silica) 0.0%

Characteristics

Colour: Tan
Bulk Density: 26-32 lb/ft3
Specific Gravity: 1.0-1.2
Grain Shape: Sub-angular
Solubility: Soluble
Hardness: 4.5 Mohs (see our hardness index)

Packaging:

  • 50 lb. paper bags, 40 bags/pallet

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