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Premium Steel Shot Media for Surface Preparation

S330 / S390 Steel Shot

S330 / S390 Steel Shot is a medium-size steel abrasive designed for shot blasting, casting cleaning and metal surface preparation. With a spherical shape, stable particle size and reliable impact performance, S330 and S390 steel shot can effectively remove sand residues, oxide scale, rust and surface contaminants from metal workpieces.

  • Payment :

    T/T,L/C

  • Product Origin :

    Shandong, China

  • Shipping Port :

    Qingdao

  • Lead Time :

    15-30 Days
Inquiry Now

Product Introduction

S330 / S390 Steel Shot is a medium-size spherical steel abrasive used for shot blasting, casting cleaning and metal surface preparation. With stable particle size, good impact strength and reliable blasting performance, S330 and S390 steel shot are suitable for removing sand residues, oxide scale, rust and surface contaminants from metal workpieces.

Compared with finer steel shot, S330 and S390 provide stronger impact force and higher cleaning efficiency. Compared with larger steel shot, they help maintain a more controlled surface finish, making them practical choices for medium-duty blasting applications.

S330 steel shot is suitable for medium castings, machinery parts, automotive components and general steel parts. S390 steel shot provides slightly higher impact force and is more suitable for larger castings, thicker steel parts, forged components and heavier workpieces.

These two steel shot sizes are widely used in foundries, forging plants, machinery manufacturing, automotive parts production, steel fabrication and industrial surface treatment before painting, coating or further processing.

Manufacturing Process

Our steel shot is produced through melting, atomization, screening, heat treatment and quality inspection. The molten steel is atomized into spherical particles, then processed through controlled quenching and tempering to obtain suitable hardness, toughness and microstructure.

After heat treatment, the steel shot is screened into different sizes and tested for chemical composition, hardness, density, particle size distribution and internal defects. This process ensures consistent blasting performance and reliable batch quality for continuous production lines.

Advantages

 

1. Suitable Impact Force for Medium-Duty Blasting

S330 / S390 Steel Shot provides suitable impact energy for medium-duty and medium-to-heavy-duty shot blasting applications. It is stronger than fine steel shot and can remove sand residues, light oxide scale, rust and surface contaminants more efficiently from castings, forgings and steel parts.

 

2. Good Balance Between Efficiency and Surface Quality

These medium-size steel shot grades offer a good balance between cleaning efficiency and surface finish.

They can improve blasting speed while helping maintain a relatively uniform surface profile.

This makes them suitable for many standard industrial shot blasting processes.

 

3. Controlled Surface Condition Before Coating

For coating or painting preparation, S330 / S390 Steel Shot can clean the surface while maintaining a relatively uniform surface condition. It is suitable for applications where the surface needs to be cleaned without excessive roughening.

 

4. Good Durability and Recyclability

S330 and S390 steel shot have good toughness and wear resistance.

During repeated blasting cycles, they can help reduce:

  • Abrasive breakage
  • Dust generation
  • Excessive media consumption
  • Unstable blasting performance

This supports better cost control in daily production.

 

5. Flexible Size Selection

Different sizes can be selected according to the workpiece size, surface condition and required cleaning strength.

Steel Shot Size Main Feature Recommended Use
S330 Steel Shot Stronger impact, deeper cleaning effect Larger castings, steel structures, heavy surface cleaning
S390 Steel Shot Medium-to-large size, higher impact force and stronger cleaning performance Large castings, forged parts, thick steel parts, steel structures, machinery frames, heavy-duty cleaning

Why Choose Our Medium-Size Steel Shot

Shandong Zhongxing Metal supplies high-quality S330 and S390 steel shot with stable chemical composition, controlled hardness and consistent particle size. These two medium-size steel shot grades are designed for efficient shot blasting, casting cleaning, desanding, descaling, rust removal and surface preparation.

Each batch is strictly inspected to ensure:

  • Reliable blasting performance
  • Strong cleaning efficiency
  • Stable particle size distribution
  • Controlled hardness and toughness
  • Good durability and recyclability
  • Stable surface treatment quality
  • Lower abrasive consumption
  • Consistent results in continuous production

Our S330 / S390 steel shot helps customers improve shot blasting efficiency, reduce operating costs and achieve stable surface preparation results across different industrial applications. Whether customers need balanced cleaning for medium workpieces or stronger impact performance for larger parts, Zhongxing Metal can provide suitable steel shot solutions according to the workpiece size, surface condition, equipment type and required cleaning strength.

Specifications

Item Available Range
Product Type Cast Steel Shot
Common Sizes S330, S390
Chemical Composition C, Si, Mn, P, S controlled by production standard
Hardness Commonly HRC 40-51, customizable upon request
Density High-density metallic abrasive
Microstructure Tempered martensite
Shape Round / Spherical
Customization Size, hardness and packaging available upon request

 

SUBJECT SPECIFICATION
Chemical Component (%) C 0.80 - 1.20%
Mn 0.60 - 1.20%
Si 0.40% min.
S 0.05% max.
P 0.05% max.
Hardness General: 40~51 HRc (377~509 HV)
Special: 52~56 HRc (543~620 HV)
Special: 56~60 HRc (620~713 HV)
Hardness Deviation ±3.0 HRc or ±40 HV
Microstructure Uniform tempered martensite
Density (g/cm³) 7.0 min.
ISO 11124.3 SS-2.8 SS-2.4 SS-2.0 SS-1.7 SS-1.4 SS-1.2 SS-1.0 SS-0.8 SS-0.7 SS-0.6 SS-0.5 SS-0.4 SS-0.3
mesh mm Steel Shot Size Specifications- Max&Min Cumulative Percentages Allowed on Corresponding Test Sieves
4  4.75                          
5 4.00                          
6 3.35 ALL Pass                        
7 2.80   ALL Pass                      
8 2.36 90%Min   ALL Pass                    
10 2.00 97%Min 85%Min   ALL Pass ALL Pass                
12 1.70   97%Min 85%Min   5%Max ALL Pass              
14 1.40     97%Min 85%Min   5%Max ALL Pass            
16 1.18       97%Min 85%Min   5%Max ALL Pass          
18 1.00         96%Min 85%Min   5%Max ALL Pass        
20 0.85           96%Min 85%Min   10%Max ALL Pass      
25 0.71             96%Min 85%Min   10%Max ALL Pass    
30 0.60               96%Min 85%Min   10%Max ALL Pass  
35 0.50                 97%Min     10%Max  
40 0.425                   85%Min     ALL Pass
45 0.355                   97%Min 85%Min   10%Max
50 0.300                     97%Min 80%Min  
80 0.180                       90%Min 80%Min
120 0.125                         90%Min
SAE J444-2017 S-930 S-780 S-660 S-550 S-460 S-390 S-330 S-280 S-230 S-170 S-130 S-110 S-70

Applications

S330 and S390 steel shot are widely used in foundries, steel fabrication plants, machinery manufacturing, automotive parts production, forging factories and metal surface treatment industries.

They are commonly used for:

They are commonly used for:

  • Shot blasting
    Casting cleaning
    Foundry desanding
    Descaling of forged and heat-treated parts
    Rust removal on steel parts
    Surface preparation before painting or coating
    Cleaning of machinery components
    Cleaning of welded structures and fabricated steel parts

Size Application Guide

S330 Steel Shot

S330 steel shot offers a stronger cleaning effect and is suitable for heavier surface cleaning applications.

It is commonly used for larger castings, steel structures, thick steel parts and workpieces with heavier rust, scale or surface contamination.

S390 Steel Shot

SS390 steel shot provides higher impact force and stronger cleaning efficiency than S330. It is suitable for larger, thicker or heavier workpieces that require stronger shot blasting performance.

It is commonly used for large castings, thick steel parts, forged components, welded structures, machinery frames, steel structures and workpieces with heavier rust, scale or surface contamination.

Packaging

 
steel drums

Steel Drums

Steel drums or palletized packaging.

 
bags

Bags

25 kg bags or jumbo bags.

▪ Customized packaging can be provided according to customer requirements, shipping method and warehouse handling conditions. ▪

Frequently Asked Questions

Can S330 / S390 steel shot be used before painting or coating?

Yes. S330 and S390 steel shot can be used for surface preparation before painting, powder coating or protective coating. They help remove rust, scale and surface contaminants, creating a cleaner surface for the next coating process. The final surface condition should match the coating specification and project requirements.

Which industries commonly use S330 and S390 steel shot?

S330 and S390 steel shot are commonly used in foundries, steel structure plants, forging factories, machinery manufacturing, automotive parts production, shipbuilding, metal fabrication and industrial surface treatment companies.

Hot tags :

S330 Steel Shot

S390 Steel Shot

Shot Blasting Media Supplier

Premium Steel Shot Media for Surface Preparation

Steel Shot Abrasive Manufacturer

Steel Shot for Castings

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