Steel Grit GP18

Application

1. Cleaning
Steel shot and grit are used in cleaning applications for removal of loose material on metal surfaces. 

This type of cleaning is common in automotive industry (motor blocks, cylinder heads, etc.).
2. Surface preparation
Surface preparation is as a series of operations including cleaning and physical modification of a surface. 

Steel shot and grit are used in surface preparation process for cleaning metal surfaces which are covered with 

mill scale, dirt, rust, or paint coatings and for physically modifying the metal surface such as creating roughness for better application of paint and coating. 

The steel shots are generally employed in shot blasting machines.
3. Stone cutting
Steel grit is used in cutting hard stones, such as granite. The grit is used in large multi-blade frames which cut the blocks of granite into thin slices.
4. Shot peening
Shot peening is the repeated striking of a metal surface by hard shot particles. 

These multiple impacts produce a deformation on the metal surface but also improve the durability of the metal part. 

The media used in this application is spherical rather than angular. 

The reason is that spherical shots are more resistant to the fracture which happens due to the striking impact.

5. Sand blasting
Carbon steel grit quality used for sand blasting body section directly affect the quality 

and comprehensive cost factor in terms of the sand blasting efficiency,girder coating, painting, kinetic energy and abrasive consumption. 

With the new coating protection performances standard (PSPC) release, there is a higher request to the piece wise sand blasting quality. 

Therefore, the cast Steel grits quality is very important in the sand blasting.
6. Angular shot for sandblasting Container
Spherical steel grit sand blasting on the container box body after it welds. Clean up the welded joint and at the same time to cause the box body surface 

to have certain roughness and increase anti-orrosion painting effect, in order to be able to work for a long time among

the ships, the chassis, the freight vehicle and the railroad vehicles.Our steel grit price is reasonable.
7. Grit spherical for The wild electricity equipment sandblasting
The wild electricity product has the specific request for for roughness and cleanliness of the surface treatment .

After angular steel grit surface treatment, they must undergo kinds of weather changes outdoor for a long- time. So that, the grit spherical sand blast for surface is specially pivotal. 

FAQ

1.What is steel grit used for?

Steel grit is utilized in the industrial sector for the preparation of metallic surfaces prior to the application of coatings of in desanding and descaling applications in foundries and forging. It is designed to remove existing coatings, rust, sand, scale and other contaminants, creating a clean, rough surface texture. This process enhances the adhesion of subsequent coatings, ensuring their longevity and effectiveness.

2.What is the hardness of steel grit?

 Steel grit comes in various hardness levels to suit different applications. General hardness ranges from 40 to 65 HRc, 40-51 HRC is for softer applications like removing softer coatings without damaging the underlying surface, while harder steel grit, up to a minimum of 60 HRC, is preferred for more aggressive surface preparation tasks, such as removing tougher coatings or creating a profile on harder materials.

3.What is the grade of steel grit?

Steel grit is categorized into different grades based on hardness. It includes GP (General Purpose) for softer grit, GL (greater hardness ranges) for a medium , and GH for the hardest grit. Each greade servers different needs and are suitable for specific applications.

4.What is the difference between steel shot and steel grit?

The main difference lies in shape and application. Steel shot is spherical and ideal for peening or removing light scale and sand, while steel grit, with its angular shape, is more effective for surface preparation and cleaning application, where it can etch the metal surface to improve coating adhesion.

5.What applications are suitable for each hardness level of steel grit?

The softer GP range is perfect for shot blast turbines aimed at preserving delicate surfaces. GL, being harder, is best suited for descaling, while the hardest range of steel grit, GH, proves effective in rough and heavy surface treatment processes.

6.What are the chemical compositions of different steel grit specifications?

The chemical composition of steel grit typically contains carbon (C), silicon (Si), and manganese (Mn). These elements are controlled three times for each production batch to meet strict internal quality standards, ISO standards, and industry norms. The high carbon content ensures hardness and durability, whereas manganese and silicon contribute to the grit’s strength and abrasive properties. Sulfur (S) and phosphorus (P) levels are kept to a minimum to prevent brittleness in the steel.

7.can you explain the sizing options available for steel grit?

Our steel grit comes in a variety of sizes, and sizing is determined by a numbering system ranging from G12 (larger, coarser particles) to G120 (smaller, finer particles). This range allows for selection based on the desired surface finish and the specific requirements of the surface preparation task, from aggressive cleaning and profiling to more delicate operations. Typical sizes include, from largest to smallest: G12, G14, G16, G18, G25, G32, G40, G50, G80, G120.

8. What do the numbers in these sizes mean?

The numbers in steel grit sizes, such as G25, G40, G80, or G120, correspond to the grit’s mesh size or the number of holes per linear inch in the screen through which the grit is sized.