Steel Grit for Coating Surface Preparation

G80 / G120 Steel Grit

G80 / G120 Steel Grit is a fine-to-very-fine steel grit abrasive series designed for precision blasting, light rust removal, fine surface cleaning and controlled surface preparation. With small particle size and angular cutting edges, G80 and G120 steel grit can clean metal surfaces while creating a smoother and more uniform surface profile than coarser steel grit sizes. They are suitable for small metal parts, precision components, thin steel parts, welded areas, machinery components and applications that require fine surface treatment before painting, powder coating or protective coating.

  • Payment :

    T/T, L/C
  • Product Origin :

    Shandong, China
  • Shipping Port :

    Qingdao
  • Lead Time :

    15-30 Days
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Product Introduction

 

G80 / G120 Steel Grit is a fine steel grit series used for light blasting, precision cleaning and fine surface preparation. Compared with coarse steel grit such as G10, G12 or G18, G80 and G120 provide a gentler cutting effect and better control over surface roughness, making them suitable for applications where excessive surface profiling should be avoided.

G80 steel grit offers fine blasting performance with controlled cutting ability. It is suitable for light rust removal, surface cleaning, thin coating preparation, small and medium metal parts, machinery components and welded areas that require a clean and uniform surface finish.

G120 steel grit is a very fine steel grit size designed for more delicate surface treatment. It provides a smoother blasting result and is suitable for precision parts, small components, light surface finishing, fine cleaning and applications where a shallow surface profile is required before coating or further processing.

G80 / G120 Steel Grit is widely used in machinery manufacturing, automotive parts, metal fabrication, precision component cleaning, surface finishing and industrial coating preparation. These fine steel grit sizes help customers achieve stable cleaning results, controlled surface roughness and better consistency in surface treatment operations.

Manufacturing Process

 

Steel grit is produced by melting high-quality steel, atomizing it into steel shot, crushing the shot into angular particles, and then screening and heat-treating the material according to required hardness and size.

During production, the steel grit is classified by sieve analysis and inspected for chemical composition, hardness, density and particle size distribution. This helps ensure stable cutting performance and consistent surface roughness during blasting.

Advantages

1. Fine and Controlled Surface Finish

G80 / G120 Steel Grit is suitable for applications that require a cleaner, finer and more uniform surface finish. Compared with coarse steel grit sizes, it creates a shallower surface profile and helps avoid excessive roughness on small or precision metal parts.

 

2. Suitable for Precision Blasting

With fine particle size and angular cutting edges, G80 and G120 steel grit can be used for precision blasting, light surface cleaning and controlled surface preparation. They are suitable for workpieces that require stable cleaning results without aggressive surface impact.

 

3. Better Control Before Painting or Coating

G80 / G120 Steel Grit can help prepare metal surfaces before painting, powder coating or protective coating when only moderate roughness is required. It removes light rust, minor surface impurities and thin oxide layers while maintaining better surface profile control.

 

4. Suitable for Small and Delicate Workpieces

These fine steel grit sizes are well suited for small metal parts, precision components, thin steel parts, machinery components, automotive parts and welded areas. They help reduce the risk of over-blasting or creating an unnecessarily deep anchor profile.

Specifications

Item Available Range
Product Type Cast Steel Grit
Common Sizes G80/G120
Chemical Composition C, Si, Mn, P, S controlled
Hardness Commonly HRC 40-52, other hardness available
Density High-density metallic abrasive
Microstructure Tempered martensite
Shape Angular
Customization Size, hardness and packaging available upon request
SUBJECT GP GL GH
Chemical Composition C 0.80 - 1.20%
Mn 0.60 - 1.20%
Si 0.40% min.
S 0.05% max.
P 0.05% max.
Hardness (HRc) 40 - 51 54 - 60 60 min.
Microstructure Uniform Tempered Martensite
Density (g/cm³) 7.0 Min.
ISO 11124.3 SG-2.4 SG-2.0 SG-1.7 SG-1.4 SG-1.2 SG-1.0 SG-0.7 SG-0.5 SG-0.3 SG-0.2 SG-0.1 SG-0.05
mesh mm Steel Grit Size Specifications- Max&Min Cumulative Percentages Allowed on Corresponding Test Sieves
7 2.80 All Pass                      
8 2.36   All Pass                    
10 2.00 80%Min   All Pass                  
12 1.70 90%Min 80%Min   All Pass                
14 1.40   90%Min 80%Min   All Pass              
16 1.18     90%Min 75%Min   All Pass            
18 1.00       85%Min 75%Min   All Pass          
20 0.850                        
25 0.710       85%Min 70%Min     All Pass        
30 0.600                        
35 0.500                        
40 0.425           80%Min 70%Min   All Pass      
45 0.355                        
50 0.300             80%Min 65%Min   All Pass    
80 0.180               75%Min 65%Min   All Pass  
120 0.125                 75%Min 60%Min   All Pass
200 0.075                   70%Min 55%Min  
325 0.045                     65%Min 20%Min
SAE J444-2017 G-10 G-12 G-14 G-16 G-18 G-25 G-40 G-50 G-80 G-120 G-200 G-325

Applications

 

G80 / G120 Steel Grit is mainly used for precision blasting, fine surface cleaning, light rust removal and controlled surface preparation. These fine steel grit sizes are suitable for applications where customers need a clean and uniform surface finish without creating an excessively deep anchor profile.

 

They are widely used in machinery manufacturing, automotive parts production, metal fabrication, precision component cleaning, welded area treatment and surface preparation before painting, powder coating or protective coating. Compared with coarse steel grit, G80 and G120 are better suited for smaller workpieces, thinner metal parts and applications requiring lower surface roughness.

 

Size Application Guide

 

G80 Steel Grit

G80 steel grit is suitable for fine blasting and controlled surface preparation. It can remove light rust, thin oxide layers, minor surface impurities and surface residues while maintaining a relatively smooth and uniform blasting result.

It is commonly used for small and medium metal parts, machinery components, welded areas, automotive parts, thin steel parts and general fine surface preparation before painting or coating.

 

G120 Steel Grit

G120 steel grit is suitable for very fine surface cleaning and more delicate blasting applications. It creates a shallower and smoother surface profile than G80, making it suitable for precision parts and applications where excessive roughness should be avoided.

It is commonly used for precision components, small metal parts, light surface finishing, fine cleaning, thin coating preparation and controlled blasting before further processing.

Packaging

 
steel drums

Steel Drums

Packed in steel drums or palletized packaging.

 
bags

Bags

25 kg bags or jumbo bags.

Private-label packaging and customized package weight are available upon request.

Frequently Asked Questions

What are G80 and G120 steel grit used for?

G80 and G120 steel grit are mainly used for precision blasting, fine surface cleaning, light rust removal and controlled surface preparation. They are suitable for small metal parts, precision components, machinery parts, welded areas and applications that require a clean and uniform surface finish before painting, powder coating or further processing.

What is the difference between G80 and G120 steel grit?

G80 steel grit provides fine cutting performance and is suitable for light rust removal, thin oxide layer removal and general fine surface preparation. G120 steel grit is finer and creates a smoother, shallower surface profile, making it more suitable for precision parts, delicate components and applications where excessive surface roughness should be avoided.

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