HC Steel Grit: High Carbon Steel Grit by W Abrasives

Long-lasting, reliable, reusable & recyclable metallic grit abrasives

Cast steel grit, manufactured under strict quality controls and conditions, using a unique air quenching thermal process, which will deliver a long lasting media. With minimal chloride & salt concentration (the lowest on the market), you receive a blasting media with the highest impact value for your cleaning application. Used primarily in «sandblasting» for surface preparation prior to painting, it is also used for descaling and desanding applications.

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Users benefits

Users benefits

3 key features

100% Recyclable

Air quenched

Globally Available

Performances

Performances

Hardness levels explained

  • Available in 4 different hardnesses to suit multiple applications. From a soft range (GP), for cleaning applications using turbines, to intermediate ranges (GB and GL), for angular profiles and higher cleaning speeds, to a very hard range (GH) , for all applications requiring significant mechanical anchoring, deep cleaning, and mainly used with compressed air shot blasting.
  • Each line is formulated with a narrow hardness range, which means more stable, consistent, and reliable profile results for your “sandblasting” production process.
  • Manufactured using a unique process, our steel abrasives have chloride and salt levels below 50 μS/cm, the lowest on the market. This reduces the possibility of contaminating surfaces, ensuring longer life for coatings and paints.
  • A wide range of standard sizes of G14, G16, G18, G25, G40, G50 or G80 are always abailable, while larger sizes, such as G12, G10 or very small (G120) are available on request. 
HC Steel Grit

Hardness Levels

Hardness Levels

SAE, ISO and WA specifications

WAE and SAE hardness grading

ANGULAR STEEL GRIT

A cast steel angular grain produced by crushing specially heat-treated oversized shot pellets. We thus obtain a grit media of martensitic steel. Specific crushers and a controlled process make it possible to obtain angular and efficient shapes abrasive, well within the characteristics required by the SAE J199 and ISO 11124 standards.

GP STEEL GRIT

40-51 HRc (per GS SAE Spec) / 470-550 HV (WA Spec)

Quenched and tempered, angular when new, this grit rapidly rounds off in use and is particularly suited to descaling applications.

GB STEEL GRIT

47-56 HRc (per GM SAE Spec)

More aggressive than GP grit, GB grit (on special order only) can be the perfect solution for surface preparation with a shot blasting machine.

GL STEEL GRIT

54-61 HRc (per GL SAE Spec) / 570-720 HV (WA Spec)

Quenched and tempered, although harder than GP & GB steel grit, GL also loses its sharp edges during shot blasting and is particularly suited to descaling and surface preparation applications.

GH STEEL GRIT

60 HRc minimum (per SAE GH Spec) / 770 HV min. (WA Spec)

Quenched with maximum hardness, GH always remains angular in its operating mix. These abrasives are particularly effective in surface treatment processes and produce a uniform, etched finish. For use mainly with compressed air equipment.

WGR STEEL GRITS 

Steel grits WGR are special products used for the cutting of hard stone products such as granite. Ask our commercial-technical teams for more details.

 

 

Markets and applications

Markets and applications

Steel structures, bridges

Railways

Pipe coating

Windmills

Metallurgy

Contractors

Specifications

Specifications

 

Family 

  

Steel Grit GP 

  

Steel Grit GL 

  

Steel Grit GH 

  

Shape 

  

Angular 

Shape in operation  Angular “Patatoid“  Angular “Soft edges“  Angular “Sharp edges“ 
Chemical composition  C ≥ 0.80%, Si ≥ 0.40%, 0.60% ≤ Mn ≤ 1.20%, 

S ≤ 0.05%, P ≤ 0.05% 

  

Hardness 

40-51 HRC 

(544-613 HV) 

54-61 HRC 

(580-720 HV) 

60 HRC min 

(697 HV) 

Standard deviation    

± 3Rc (± 80 HV) 

  

  

Microstructure 

Highly refined and homogeneous tempered martensite, obtained through a well-controlled manufacturing process that mixes the iron and carbon atoms 

in the finest and most ideal way possible, producing optimum homogeneity, 

hardness and resistance. 

Minimum den– sity measured by alcohol displacement    

> 7.3g/cm3 

  

Conductivity 

Typically, <30 μS/cm 

Low level according to ASTM D4940 

Applicable specifications  SAE J444, SAEJ445, SAE J1993, ASTM 

D4940, SSPC-AB3 (on request) 

 

Read more :

https://www.sae.org/standards 

https://www.astm.org/products-services/standards-and-publications.html  

https://store.ampp.org/nacestandards 

https://www.iso.org/standard/66706.html

Size distribution

Size distribution

SAE and WA size options

(primarily used in Americas and Asia) 

Product  Sieve opening in mm (values given in cumulated weight %) 
2,8  2,36  2  1,7  1,4  1,18  1  0,85  0,71  0,6  0,5  0,42  0,35  0,3  0,18  0,12  0,07 
 G_012    AP    80% min  90% min                         
 G_014      AP    80% min  90% min                       
 G_016        AP    75% min  85% min                     
 G_018          AP    75% min    85% min                 
 G_025            AP      70% min      80% min           
 G_040              AP          70% min    80% min       
 G_050                  AP          65% min  75% min     
 G_080                        AP      65% min  75% min   
 G_120                            AP    60% min  70% min 
Screen Number  7  8  10  12  14  16  18  20  25  30  35  40  45  50  80  120  200 
Screen Size
(mm) 
2,8  2,36  2  1,7  1,4  1,18  1  0,85  0,71  0,6  0,5  0,42  0,35  0,3  0,18  0,12  0,07 
Screen Size
(inches) 
0,111  0,0937  0,0787  0,0661  0,0555  0,0469  0,0394  0,0331  0,0278  0,0234  0,0197  0,0165  0,0139  0,0117  0,007  0,0049  0,0029 

(primarily used in Europe, MEIA (Middle East, India and Africa)

Product  Sieve opening in mm (values given in cumulated weight %) 
2,8  2,36  2  1,7  1,4  1,18  1  0,85  0,71  0,6  0,5  0,42  0,35  0,3  0,18  0,12  0,07 
W G_012  0  <20    >85  >97                         
W G_014    0  <10    >80  >90                       
W G_016      0  <10    >80  >90                     
W G_018        0  <30    >85  >97                   
W G_025          0  <40      >85  >95               
W G_040            0  <20        >90  >96           
W G_050                0  <10        >80  >90       
W G_080                      0  <20      >75  >90   
W G_120                          0  <10    >50  >80 
Screen Number  7  8  10  12  14  16  18  20  25  30  35  40  45  50  80  120  200 
Screen Size
(mm) 
2,8  2,36  2  1,7  1,4  1,18  1  0,85  0,71  0,6  0,5  0,42  0,35  0,3  0,18  0,12  0,07 
Screen Size
(inches) 
0,111  0,0937  0,0787  0,0661  0,0555  0,0469  0,0394  0,0331  0,0278  0,0234  0,0197  0,0165  0,0139  0,0117  0,007  0,0049  0,0029 

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Resources & downloads

Resources & downloads

High Carbon Steel Grit brochure

Download