Opta Waive
Opta Minerals Blast Cleaning Abrasives

Ultrablast – Nickel Slag

Ultrablast is a high-density disposable blasting slag made from a by-product of nickel production. It is an ideal abrasive for general-purpose use, including shipyards, bridges and general industrial blast cleaning. Tests have shown nickel slag to provide high productivity improvements over traditional abrasives.

Ultrablast – Nickel Slag Product Photo

Advantages of Ultrablast – Nickel Slag

  • High-density slag for higher production rates
  • Non-reactant – will not interfere with coatings
  • Non-detectable crystalline-free silica

Available Sizes and Profiles:

Size Profile Use
UB 12-40 4.0 – 5.0 Mil Heavy-duty size for the removal of thick, tough old paint, heavy rust from ships, bridges, tanks, rail cars, etc., and for achieving a coarse profile.
UB 30-60  2.5 – 3.5 Mil Utility size for the removal of light rust, paint and mill scale.
UB Fine 2.2 – 3.2 Mil Our finest nickel slag, for achieving a smoother profile.

How does Ultrablast – Nickel Slag Perform?*

Cleaning rate: 295 – 415 ft2/hour
Consumption: 3.0 – 5.0 lb/ft2

*Based on internal tests. Rates vary based on blasting pressure and nozzle size.

Technical Specifications

Symbol Name Percentage
Fe2O3 (Iron Oxide) 30 – 37%
Fused Silica (Silicon Dioxide) 32 – 42%
MgO (Magnesium Oxide) 5 – 12%
Al2O3 (Aluminum Oxide) 3 – 10%
CaO (Calcium Oxide) 3 – 6
Cr2O3 (Chromium Oxide) 2 – 3%
Ni (Nickel) 0.1 – 1.0%
SiO2 (Crystalline Silica) ~0.5%


Colour: Black
Bulk Density: 115 lbs/ft3
Specific Gravity: 3.5
Grain Shape: Angular
Solubility: Insoluble
Hardness: > 7 Mohs (see our hardness index)


  • 50-lb. bags, 60 bags/pallet
  • 3000-lb. Super Sacs
  • In bulk; in blower truck or Rail Hopper Cars



Order Ultrablast – Nickel Slag today