Terms
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Cast steel angular grit is produced by crushing specially heat treated shot pellets. Its behavior characteristics in service are very much dependent upon the hardness selection of GP, GB, GL or GR grit.

Although harder and more aggressive than GB Steel Grit, GL also loses its sharp edges during abrasive blasting and is particularly suited to descaling and surface preparation applications.
Unit of Measure

Specifications

Designation

 N/A GL 40

Formulation

 N/A GL Steel Grit

Material

 N/A Steel

Mesh Size

 N/A 0.0117 to 0.0165 in0.300 to 0.425 mm

Screen Number

 N/A 40 to 50

Shape When New

 N/A Angular

Shape

 N/A Angular

Sieve analysis

 N/A According to standard SAE J 444

Chemical analysis

 N/A According to standard SAE J827 shot / J1993 grit

Micro Hardness

 N/A 54 - 61 HRC

Victors

 N/A 613 - 697 HV

Standard deviation

 N/A ±3Rc or ± 60 HV

Microstructure

 N/A Well controlled manufacturing gives die a martensitic structure that blends the iron and carbon atoms in the finest and most ideal way possible. This structure produces a homogeneity or hardness and resistance throughout the shot. Without this structure the shot would not have the resistance necessary for the applications in which it is used.

Minimum Density Measured by Alcohol Displacement

 N/A > 7.3 g/cm