G40 High Carbon Steel Grit

G40 Steel Grit

G40 Steel Grit is a fine steel grit abrasive designed for light to medium blasting, controlled rust removal and fine surface preparation. Its smaller particle size provides better surface control and a smoother blasting result compared with coarser steel grit sizes. G40 steel grit is suitable for small and medium metal parts, machinery components, welded parts, steel surfaces and applications that require clean surface preparation with moderate roughness before painting or coating.

  • Payment :

    T/T, L/C
  • Product Origin :

    Shandong, China
  • Shipping Port :

    Qingdao
  • Lead Time :

    15-30 Days
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Product Introduction

 

G40 Steel Grit is a fine steel grit abrasive designed for light to medium blasting, controlled rust removal and fine surface preparation. Its smaller particle size provides better surface control and produces a finer, more uniform blasting profile compared with coarse steel grit. G40 steel grit is suitable for small and medium metal parts, precision steel components, welded parts, machinery components and applications where the surface needs to be cleaned without excessive roughness before coating or painting.

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

  • Fine steel grit size for controlled surface preparation
  • Produces a finer and more uniform surface profile
  • Suitable for light to medium rust removal
  • Reduces excessive roughness compared with coarser grit sizes
  • Ideal for applications requiring better surface control

Specifications

Item Available Range
Product Type Cast Steel Grit
Common Sizes G40
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.

Applications

G40 steel grit is suitable for fine blasting, light rust removal, surface cleaning and controlled coating preparation. It is commonly used for small and medium metal parts, machinery components, welded parts, precision steel parts and surfaces that require a cleaner, smoother blasting result before painting or coating.

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 is G40 steel grit used for?

G40 steel grit is a fine angular abrasive used for light surface cleaning, controlled rust removal and surface preparation before painting or coating. Compared with coarser steel grit sizes such as G18 and G25, G40 creates a finer and more uniform surface profile.

G40 steel grit is suitable for small and medium metal parts, steel components, machinery parts, welded parts and surfaces that require moderate cleaning with better surface control.

What is the difference between G25 and G40 steel grit?

G25 steel grit has a larger particle size and provides stronger cutting power with a deeper surface profile. It is suitable for general rust removal, descaling and standard coating preparation.

G40 steel grit is finer than G25. It provides a more controlled cleaning effect and creates a smoother, finer surface profile. It is suitable for applications where the workpiece needs light to medium cleaning without excessive roughness.

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