Steel Shot S390: The High-Performance Abrasive for Demanding Surface Preparation
In the rigorous world of industrial surface preparation, the choice of abrasive media is paramount to achieving efficiency, quality, and cost-effectiveness. Among the diverse range of metallic abrasives available, Steel Shot S390 stands out as a premium workhorse, specifically engineered for heavy-duty applications where consistent performance and superior results are non-negotiable. Characterized by its high hardness, exceptional durability, and near-spherical shape, S390 is a cornerstone for industries requiring deep cleaning, aggressive peening, or pristine surface finishes.
High Hardness (40-50 HRC): This hardness allows S390 to effectively cut through tough contaminants like heavy mill scale, thick rust, paint layers, and weld slag. It provides significant impact energy transfer.
Exceptional Durability and Longevity: Due to its high hardness combined with the toughness from proper tempering, S390 boasts outstanding resistance to fracturing and breakdown. It can be recycled hundreds, often thousands, of times in blast cabinet or wheelblast systems before needing replenishment, making it extremely cost-effective over time.
Peening: Generates beneficial compressive residual stresses on metal surfaces, enhancing fatigue life and resistance to stress corrosion cracking. S390 is widely used for shot peening critical components like springs, gears, and turbine blades.
Steel Shot S390's unique combination of size, hardness, and shape makes it indispensable in numerous demanding scenarios:
Aggressive Cleaning & Descaling:
Removing heavy, tenacious mill scale from structural steel (beams, plates) before fabrication or painting.
Stripping thick, multiple layers of paint, epoxy, or rubber coatings from large industrial structures (bridges, ships, tanks, offshore platforms).
Cleaning severe rust and corrosion from castings, forgings, and heavy machinery components.
Preparing surfaces for high-performance coating systems requiring an exceptionally clean anchor profile (e.g., marine coatings, industrial linings).
Shot Peening:
Inducing compressive stresses in high-stress components like aircraft landing gear, automotive valve springs, connecting rods, crankshafts, and turbine engine parts. The S390 size offers a good balance of impact energy and coverage area for many medium-sized components.
Surface Finishing & Deburring:
Achieving a uniform, matte finish on metal parts.
Removing burrs and sharp edges from castings, stampings, and machined parts without causing excessive dimensional change or an overly rough surface. Its spherical shape is less likely to cut or gouge the base metal compared to grit.
Resilient Foundry Applications:
Cleaning large, heavy castings (engine blocks, transmission housings, pump bodies) where durability and deep cleaning power are essential.
Steel shot is widely used for descaling and rust removal treatment
How are steel shot and grit used to treat steel surfaces?
Steel shot is widely used for descaling and rust removal treatment
What are the unique characteristics of steel shot?