Coal Slag

Coal Slag is one of the most versatile abrasives available and is generally used for the removal of thick coatings, rust, and mill scale. Coal Slag is widely used due to its profiling ability, economical price point, and availability. Coal Slag is frequently used in new steel and steel maintenance applications such as: blasting of storage tanks, water towers, bridges, ships, structural and plate steel, offshore platforms, and oil field maintenance.


Shape: Angular
Hardness: 6.0–7.0 Mohs
Bulk Density: 80–90 lbs./cu. ft.
Specific Gravity: 2.7 g/cc
Free Silica: Less Than 1%
By-product Abrasive


Recommended nozzle pressure: 90–125 psi
Recommended working distance from surface: 18–36 inches


Bulk Truck
Bulk Bags: 3,000 and 4,000 lbs
Bags: 50 and 100 lbs


Coarse (1040) Typical Profile: 4.0–5.0 mils
Medium (1240) Typical Profile: 3.0–4.8 mils
Fine (2040) Typical Profile: 2.0–3.8 mils
Extra Fine (3060) Typical Profile: 1.0–2.6 mils

Inhaling dusts from abrasive blasting may result in serious injury, disease, or death.
According to OSHA, only a Type CE NIOSH-certified blasting airline respirator with positive pressure blasting helmet should be used for abrasive blasting.

Product details are based on published information at the time of publication. Product details are subject to change without notice. Contact Marco for more information.