ABRASIVE

Mesh

mm

Cast steel pellet size mm Specification of Steel Shot mm

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

7

2.8

all pass

8

2.36

all pass

10

2

85% min

all pass

all pass

12

1.7

97% min

85% min

5%max

all pass

14

1.4

97% min

85% min

5%max

all pass

16

1.18

97% min

85% min

5%max

all pass

18

1

96% min

85% min

5%max

all pass

20

0.85

96% min

85% min

10%max

all pass

25

0.71

96% min

85% min

10%max

30

0.6

96% min

85% min

all pass

35

0.5

97% min

85% min

10%max

40

0.425

97% min

all pass

45

0.355

80% min

10%max

50

0.3

90% min

120

0.125

90% min

200

0.075

325

0.045

SAEJ4444

S-780

S-660

S-550

S-460

S-390

S-330

S-280

S-230

S-170

S-110

S-70

Name

Steel shot

Steel grit

Chemical component

C

0.8~1.2%

Mn

0.35~1.2%

Si

≥0.40%

S

≤0.05%

P

≤0.05%

Average hardness

Regular：40~50HRC

Special：52~56HRC

Special：56~60HRC

GP Steel Sand：42~52HRC

GP Steel Sand：53~60HRC

GP Steel Sand：60~64HRC

Hardness deviation

Max. deviation range：±3.0HRC Max Deviation ±3.0HRC

Tensile strength

-

Owen life

2000~2800 Times

Microstructure

Uniform tempered martensite or tempered troostite

Density

7.4g/cm³

7.6g / cm³

Bulk density

4.4g/cm³

4.2g/cm³

Item

Technique data

Chemical Components

C

0.45-0.86%

High 0.70-0.86% |Normal 0.45-0.70%

Mn

0.50-1.30%

Si

0.15-0.35%

S

≤0.05%

P

≤0.04%

Density

7.8g/cm3

Hardness

40-45/45~5005-60HRC

Ervin life

5000-12000

Microstructure

Deformed zirconium or deformed pearlite