Bearing steel grit is made of chrome alloy material which are fast atomized after melting.After heat treatment,it is featured with optimum mechanical characteristics, good tenacity,high fatigue resistance,long working-life,low consumption and so on. 30% will be saved. Mainly used in granite cutting,sandblasting and shot peening.

Bearing steel grit is made of chrome alloy material which are fast atomized after melting. After heat treatment,it is featured with optimum mechanical characteristics, good tenacity, high fatigue resistance,long working-life,low consumption and so on. 30% will be saved. Mainly used in granite cutting,sandblasting 。
　

Products Steel Grit
Chemical Composition%
C 0.8-1.20%
Si 0.4-1.2%
Mn 0.6-1.2%
S ≤0.05%
P ≤0.05%
Hardness steel shot　 GP 41-50HRC;GL 50-55HRC;GH 63-68HRC
Density　 steel shot　 7.6g/cm3
Micro structure Martensite structure
Appearance　 Spherical Hollow particles<5% Crack particle<3%
Type G120,G80,G50,G40,G25,G18,G16,G14,G12,G10
Diameter 0.2mm,0.3mm,0.5mm,0.7mm,1.0mm，1.2mm,1.4mm，1.6mm,2.0mm,2.5mm
Application 1.Granite cutting
2.Blast cleaning: Used for blast cleaning of casting, die-casting,forging; sand removal of casting, steel plate, H type steel, steel structure.
3..Rust removal: Rust removal of casting, forging, steel plate, H type steel,steel structure.
4.Shot peening: Shot peening of gear, heat treated parts.
5.Shot blasting: Shot blasting of profile steel, ship board, steel board, steel material,steel structure.
SIZE DISTRIBUTION OF STEEL GRIT
Screen No. In Screen size SAE J444 Standard Steel grit 
G10 G12 G14 G16 G18 G25 G40 G50 G80 G120
6 0.132 3.35 　 　 　 　 　 　 　 　 　 　
7 0.111 2.8 All Pass 　 　 　 　 　 　 　 　 　
8 0.0937 2.36 　 All Pass 　 　 　 　 　 　 　 　
10 0.0787 2 80% 　 All Pass 　 　 　 　 　 　 　
12 0.0661 1.7 90% 80% 　 All Pass 　 　 　 　 　 　
14 0.0555 1.4 　 90% 80% 　 All Pass 　 　 　 　 　
16 0.0469 1.18 　 　 90% 75% 　 All Pass 　 　 　 　
18 0.0394 1 　 　 　 85% 75% 　 All Pass 　 　 　
20 0.0331 0.85 　 　 　 　 　 　 　 　 　 　
25 0.028 0.71 　 　 　 　 85% 70% 　 All Pass 　 　
30 0.023 0.6 　 　 　 　 　 　 　 　 　 　
35 0.0197 0.5 　 　 　 　 　 　 　 　 　 　
40 0.0165 0.425 　 　 　 　 　 80% 70%min 　 All Pass 　
45 0.0138 0.355 　 　 　 　 　 　 　 　 　 　
50 0.0117 0.3 　 　 　 　 　 　 80%min 65%min 　 All Pass
80 0.007 0.18 　 　 　 　 　 　 　 75%min 65%min 　
120 0.0049 0.125 　 　 　 　 　 　 　 　 75%min 65%min
200 0.0029 0.075 　 　 　 　 　 　 　 　 　 70%min
GB 2.5 2 1.7 1.4 1.2 1 0.7 0.4 0.3 0.2
1.raw material1.raw material
2.Quenching2.Quenching
3.First crushing3.First crushing
4.Second crushing4.Second crushing
5.First screening5.First screening
6.Second screening6.Second screening
7.Third screening7.Third screening
8.Tempering8.Tempering
9.Package9.Package


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