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S660-S780 Steel Shot

S660 / S780 Steel Shot

S660/S780 Steel Shot are extra-large steel shot abrasives designed for powerful shot blasting and extra-heavy-duty surface preparation. S660 steel shot and S780 steel shot provide maximum impact force and strong cleaning power for large, thick and heavily contaminated workpieces. They are mainly used for heavy castings, large steel structures, thick steel plates, heavy machinery parts, shipbuilding steel parts and mining equipment parts, especially for removing severe rust, thick oxide scale and heavy sand residues before protective coating.

  • Payment :

    T/T,L/C

  • Product Origin :

    Shandong, China

  • Shipping Port :

    Qingdao

  • Lead Time :

    15-30 Days
Inquiry Now

Product Introduction

Extra-Large Steel Shot for Heavy-Duty Surface Cleaning

S660 and S780 steel shot are extra-large steel shot abrasives designed for heavy-duty shot blasting, strong impact cleaning and surface preparation of large metal workpieces. Compared with smaller steel shot sizes, S660 and S780 provide much higher impact force and deeper cleaning effect. They are suitable for heavy castings, large steel structures, thick steel plates, heavy forgings and workpieces with severe sand residues, rust, scale or surface contamination.

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. Very Strong Impact Force

S660 and S780 steel shot provide very high impact energy during shot blasting. They are suitable for heavy-duty cleaning applications where strong blasting force is required.

They can effectively remove:

  • Heavy sand residues
  • Thick oxide scale
  • Rust
  • Surface impurities
  • Heat-treatment scale
  • Old coating residues

2. High Cleaning Efficiency for Large Workpieces

These extra-large steel shot sizes are designed for large and heavy workpieces.

They can help improve cleaning speed and reduce blasting time when treating heavy castings, thick steel plates and large steel structures.

For production lines with high cleaning requirements, S660 and S780 steel shot can provide efficient and powerful surface cleaning performance.

3. Suitable for Severe Surface Contamination

S660 and S780 steel shot are recommended for workpieces with heavy rust, thick scale, strong surface contamination or difficult-to-remove sand residues.

Their large particle size and strong impact force make them suitable for rough cleaning and heavy surface preparation.

They are not usually recommended for thin, small or delicate parts because the impact force is very strong.

4. Stable Performance in Heavy-Duty Blasting

With controlled hardness, consistent particle size and stable chemical composition, S660 and S780 steel shot provide reliable blasting performance during continuous operation.

They help customers maintain stable cleaning quality in demanding industrial blasting processes.

5. Good Durability and Cost Control

S660 and S780 steel shot have good toughness, wear resistance and recyclability. During repeated blasting cycles, they help reduce:

  • Abrasive breakage
  • Dust generation
  • Excessive abrasive consumption
  • Unstable cleaning results

This supports better cost control in heavy-duty surface treatment applications.

Size Selection Guide

Steel Shot Size Main Feature Recommended Use
S660 Steel Shot Extra-large size, very strong impact Heavy castings, thick steel parts, heavy desanding
S780 Steel Shot Maximum impact force, heavy-duty cleaning Large castings, severe rust, thick scale, strong contamination

Why Choose Our Extra-Large Steel Shot

Shandong Zhongxing Metal supplies high-quality S660 and S780 steel shot with stable chemical composition, controlled hardness and consistent particle size. Each batch is strictly inspected to ensure:

  • Strong impact cleaning performance
  • Reliable blasting efficiency
  • Good durability
  • Stable surface preparation quality
  • Lower dust generation
  • Consistent results in heavy-duty production

Our extra-large steel shot helps customers improve cleaning efficiency, reduce abrasive consumption and achieve stable results when processing large and heavy metal workpieces.

Specifications

Item Available Range
Product Type Cast Steel Shot
Common Sizes S660, S780
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

S660 and S780 steel shot are widely used in foundries, steel fabrication plants, shipbuilding, heavy machinery manufacturing, construction machinery, mining equipment and metal surface treatment industries.

They are commonly used for:

  • Heavy-duty shot blasting
  • Large casting cleaning
  • Heavy desanding
  • Thick scale removal
  • Rust removal
  • Surface preparation before painting or coating
  • Cleaning of heavy forged parts
  • Cleaning of steel structures and thick steel plates

Size Application Guide

S660 Steel Shot

S660 steel shot is suitable for heavy-duty surface cleaning of large castings, thick steel parts and heavy machinery components.

It provides very strong impact force and is commonly used for heavy desanding, rust removal, scale removal and rough surface preparation before coating or painting.

S780 Steel Shot

S780 steel shot provides the strongest impact force among standard steel shot sizes.

It is recommended for large and heavy workpieces with severe sand residues, thick oxide scale, heavy rust or strong surface contamination.

S780 is suitable for demanding blasting applications where maximum cleaning power is required.

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

What should be considered when using S660 and S780 steel shot?

When using S660 and S780 steel shot, the workpiece size, material thickness, surface condition and blasting machine capacity should be considered. Because these sizes provide very high impact force, they are more suitable for large, thick and heavy workpieces.

They are not usually recommended for thin, small or delicate parts, as the strong impact may create excessive surface roughness or deformation. For heavy-duty cleaning and strong surface preparation, S660 and S780 are suitable choices.

What is the difference between small-size and large-size steel shot?

The main difference between small-size and large-size steel shot is the impact force, surface coverage and final surface finish.

Small-size steel shot, such as S70, S110 and S170, provides finer surface coverage and a smoother blasting finish. It is suitable for small parts, thin workpieces, precision components and applications where lower impact force is required.

Large-size steel shot, such as S390, S460, S550, S660 and S780, provides stronger impact force and higher cleaning power. It is suitable for large castings, thick steel plates, steel structures and heavy workpieces with rust, scale, sand residues or severe surface contamination.

In general, smaller steel shot creates a smoother surface and is better for delicate parts. Larger steel shot removes contaminants faster and is better for heavy-duty shot blasting, but it may create a rougher surface profile.

Hot tags :

High Carbon Steel Shot Peening Media Supplier

S780 Steel Shot

S660 Steel Shot

Premium Steel Shot for Heavy Rust Remova

Shot Blasting Abrasive Manufacturer

Steel Shot Abrasive for Precision Surface Finishing

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