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S390/S460/S550 ST Series Steel Shot

S390 / S460 / S550 ST Series Steel Shot

S390 / S460 / S550 ST Series Steel Shot are large-size secondary-quenched steel shot abrasives used for heavy-duty shot blasting and strong surface cleaning. With high impact force, improved wear resistance, stable particle structure and lower dust generation, S390 ST Series steel shot, S460 ST Series steel shot and S550 ST Series steel shot can efficiently remove rust, oxide scale, sand residues and surface contaminants from large and thick metal workpieces. They are suitable for large castings, steel structures, thick steel plates, heavy forgings, machinery frames, welded components and protective coating preparation.

  • Payment :

    T/T,L/C

  • Product Origin :

    Shandong, China

  • Shipping Port :

    Qingdao

  • Lead Time :

    15-30 Days
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Product Introduction

High-reliability steel shot developed for demanding shot peening applications and precision manufacturing.

S390 / S460 / S550 ST Series Steel Shot are large-size secondary quenched steel shot abrasives used for heavy-duty shot blasting and strong surface cleaning. With higher impact force, improved toughness and stable particle structure, these ST steel shot grades can efficiently remove rust, oxide scale, sand residues and surface contaminants from large and thick metal workpieces. The double quenching process helps reduce excessive breakage under high-impact blasting conditions, supporting lower dust levels, longer service life and more stable cleaning results. S390, S460 and S550 ST Series Steel Shot are suitable for large castings, steel structures, thick steel plates, heavy forgings, machinery frames, welded components and protective coating preparation.

Manufacturing Process

ST Series Steel Shot is manufactured through raw material inspection, medium-frequency melting, chemical composition testing, centrifugal atomizing, drying, sizing, cleaning, shape selection, secondary quenching, tempering, fine screening and packaging.

The core advantage of ST Series Steel Shot comes from its secondary quenching process. After the steel shot is formed and preliminarily screened, it undergoes an additional quenching treatment to improve internal structure stability, hardness uniformity, toughness and impact resistance. This process helps reduce breakage and dust generation during repeated blasting cycles.

After secondary quenching, the steel shot is tempered to reduce internal stress and enhance durability. Through strict screening and quality inspection, ST Series Steel Shot delivers stable blasting performance, longer service life and consistent surface treatment quality for high-end shot blasting applications.

Manufacturing Process Flow of Steel Shots

Advantages

 

1. Strong Impact Force for Heavy-Duty Cleaning

S390, S460 and S550 ST Series Steel Shot are large-size secondary quenched steel shot abrasives designed for heavy-duty shot blasting. Their higher impact force helps remove rust, oxide scale, sand residues and surface contamination from large and thick metal workpieces.

 

2. Secondary Quenching for Better Durability

The secondary quenching process improves internal structure stability, toughness and resistance to impact breakage. This allows S390, S460 and S550 ST Series Steel Shot to perform more reliably under high-impact blasting conditions.

 

3. Lower Dust Generation in Heavy Blasting

Heavy-duty blasting often causes faster abrasive breakdown and higher dust levels. ST Series Steel Shot helps reduce excessive breakage, keeping the blasting system cleaner and improving the stability of the abrasive mix during continuous operation.

 

4. Better Cost Control for Large Workpieces

With longer service life and more stable performance, S390, S460 and S550 ST Series Steel Shot can help reduce replacement frequency and abrasive waste. They are suitable for large castings, steel structures, thick plates, heavy forgings and welded components before protective coating.

  • Large-size ST Series steel shot for heavy-duty shot blasting and strong surface cleaning
  • Secondary quenching improves toughness and reduces excessive breakage under high-impact blasting
  • High impact force helps remove rust, oxide scale, sand residues and surface contaminants efficiently
  • Suitable for large and thick workpieces requiring stronger cleaning power
  • Good durability supports longer abrasive life and better cost control
  • Stable blasting performance helps maintain consistent surface preparation quality
Foundry Steel Shot Usage and Consumption Rates
Steel Shot Usage Rates for Stainless Steel Plates
Ship Plate Blasting Abrasive Usage per Square Meter

Specifications

Parameter Specification
Product Type & Size S390 0.85 – 1.70 mm
S460 1.00 – 2.00 mm
S550 1.18 – 2.00 mm
Chemical Composition Carbon 0.985 (0.80 - 1.20%)
Manganese 0.859 (0.60 - 1.20%)
Silicon 0.768 (0.40 - 1.00%)
Sulfur 0.019 (<0.05%)
Phosphorus 0.022 (<0.05%)
Density > 7.5 g/cm³
Hardness 45-52 HRC (Customization available)
Ervin Life 3010 (2800 - 3200)

Applications

Aerospace

Aircraft engine blades, shafts and gears; aircraft structural parts, landing gear, and critical wing sections.

Automotive & New Energy Vehicles

Transmission gears, drive shafts, suspension springs, and key e-drive system components.

Wind Power & Energy Equipment

Gearbox components, main shafts, bearings, and heavy-duty structural parts.

Construction Machinery & Heavy Equipment

High-strength steel structural parts, welded components, and heavy-duty transmission parts.

Precision Casting & Advanced Manufacturing

High-precision castings, molds, and mechanical components.

S390, S460 and S550 ST Series Steel Shot are designed for heavy-duty surface cleaning and industrial shot blasting. They are suitable for large castings, steel structures, thick steel plates, heavy forgings, machinery frames, welded steel parts and heat-treated components.

These large-size secondary-quenched steel shot grades are commonly used for heavy desanding, descaling, rust removal and surface preparation before protective coating, painting or further processing.

Packaging

 
steel drums

Metallic Cans / Cartons

12.5 kg or 25 kg units on 500 kg or 1,000 kg pallets.

 
bags

Bags

20 kg or 25 kg bags on 500 kg or 1,000 kg pallets.

▪Customized packaging available.▪

Frequently Asked Questions

What are S390/S460/S550 ST Series Steel Shot used for?

S390, S460 and S550 ST Series Steel Shot are used for heavy-duty shot blasting and strong surface cleaning. These large-size secondary-quenched steel shot grades provide higher impact force and are suitable for large castings, steel structures, thick steel plates, heavy forgings and machinery parts. They are commonly used to remove heavy sand residues, rust, oxide scale, heat-treatment scale and surface contaminants before coating or painting.

How does the secondary quenching process improve heavy-duty blasting performance?

The secondary quenching process helps improve the toughness and durability of ST Series Steel Shot. This allows S390, S460 and S550 to maintain stronger impact performance while reducing excessive breakage during heavy-duty blasting. For large workpieces, this means more stable cleaning efficiency, lower dust generation and better abrasive cost control in continuous production.

Hot tags :

S390 Steel Shot Abrasive

S460 Cast Steel Shot

S550 Steel Blasting Media

Premium Steel Shot Blasting for Surface Treatment

High Manganese Steel Shot Abrasive

ST Series Shot Peening Steel Shot

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