Steel Shots & Steel Grits

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Steel Shots & Steel Grits are made of tempered martensite, with moderate hardness, excellent elasticity, wear-resistant, give less dust, longer recycle life, low cost, extensively used for shot peening to give residual stress in the surface layer of components for fatigue life enhancement and suppression of stress corrosion cracking and descaling and cleaning up surfaces of castings, steel parts and mechanical work-pieces prior coating. They are also extremely ideal materials for cutting granite.

Applications
Steel Shots Steel Grits Applications
SS-2.5

22-2.0

 SG-2.5

SG-2.0

 Removing sand, descaling ,for large-size of  castings, forging, heat- treated workpieces, steel structure.
SS- 1.7

SS- 1.4

 SG- 1.7

SG- 1.4

SG- 1.2

 Removing sand, descaling，intensification for large-size and middle- size of   castings, forging, heat-treated workpieces,  steel plate, steel structure,
SS- 1.2

SS- 1.0

 SG- 1.0

SG-0.7

 Removing sand, descaling，intensification for small-size and middle- size of  castings, forging, heat-treated workpieces, aluminium-copper alloy castings, steel plate, trip steel, steel pipes.
 

SS-0.8

SS-0.6

  

SG- 1.0

SG-0.7

 Removing sand, descaling，intensification for small-size of  castings, forging,  heat-treated  workpieces,  aluminium-copper  alloy  castings, steel  plate,  trip  steel,  steel  pipes,  springs  and  chains.  Grinding processing
SS-0.5

SS-0.3

 SG-0.4

SG-0.3

 Removing sand, rust, descalling, intensification, improving roughness and adhesiveness for small-size of alloy castings, thin steel plate, trip steel, stainless steel , springs.

 

Chemical-Physical Characteristics
Item Steel Shots Steel Grits
GP GL GH
Hardness  ±3HRC 40-50 42-45 56-60 63-65
Specify gravity 7.2 g/cm3
Metallographic Struture Even Tempered Martensite or Troostite
Chemical composition,% C: 0.85% – 1.20%;   Mn: 0.60% – 1.20%;  Si: 0.40 %– 1.20%;

S: 0.05 max;  P: 0.05 max.

 

Steel Shots & Steel Grits

SCREEN NUMBER Size SAE J-444 SHOT SCREENING SPECIFICATIONS
(mm) S780 S660 S550 S460 S390 S330 S280 S230 S170 S110 S070
6 3.35
7 2.80 0
8 2.36 0
10 2.0 ≥85% 0 0
12 1.70 ≥97% ≥85% 三5% 0
14 1.40 ≥97% ≥85% 三5% 0
16 1.18 ≥97% ≥85% 三5% 0
18 1.00 ≥96% ≥85% 三5% 0
20 0.850 ≥96% ≥85% 三10% 0
25 0.710 ≥96% ≥85% 三10%
30 0.600 ≥96% ≥85% 0
35 0.500 ≥96% 三10%
40 0.425 ≥85% 0
45 0.355 ≥97% 三10%
50 0.300 ≥80%
80 0.180 ≥90% ≥80%
120 0.125 ≥90%
200 0.075
SS-2.5 SS-2.0 SS-1.7 SS-1.4 SS-1.2 SS-1.0 SS-0.8 SS-0.6 SS-0.5 SS-0.3 SS-0.2

 

SCREEN NUMBER SAE J-444 GRIT SCREENING SPECIFICATIONS
(mm) G10 G12 G14 G16 G18 G25 G40 G50 G80 G120
6 3.35
7 2.80 0
8 2.36 0
10 2.0 ≥80% 0
12 1.70 ≥90% ≥80% 0
14 1.40 ≥90% ≥80% 0
16 1.18 ≥90% ≥75% 0
18 1.00 ≥85% ≥75% 0
20 0.850
25 0.710 ≥85% ≥70% 0
30 0.600
35 0.500
40 0.425 ≥80% ≥70% 0
45 0.355
50 0.300 ≥80% ≥65% 0
80 0.180 ≥75% ≥65%
120 0.125 ≥75% ≥60%
200 0.075 ≥70%
SG-2.5 SG-2.0 SG-1.7 SG-1.4 SG-1.2 SG-1.0 SG-0.7 SG-0.4 SG-0.3 SG-0.2

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