The steel abrasives (steel shot and steel grit) plant and foundry of SINTOKOGIO, Ltd.
were established at Osaki, near Nagoya, Japan in 1962 and the production of the steel
abrasives (steel shot and steel grit) ,and wear-resistant alloy castings was started.
SINTOKOGIO, Ltd. has the top market share of premium quality the steel abrasives
(steel shot and steel grit) in Japan.
STEEL SHOT
STEEL GRIT

* Density :

More than 7.45 g/cm3
* Microstructure :

Finely tempered martensite
* Size Distribution :
Mesh mm S-930 S-780 S-660 S-550 S-460 S-390 S-330 S-280 S-230 S-170 SB-4 S-110 S-70
6 3.350 0% x x x x x x x x x x x x
7 2.800 x 0% 0% x x x x x x x x x x
8 2.360 Min
85%		 x x 0% x x x x x x x x x
9 2.000 Min
97%		 Min
85%		 x x 0% x x x x x x x x
10 1.700 x Min
97%		 Min
85%		 Min
85%		 Max
5%		 0% x x x x x x x
12 1.400 x x Min
97%		 Min
97%		 x Max
5%		 0% x x x x x x
14 1.180 x x x x Min
85%		 x Max
5%		 0% x x x x x
16 1.000 x x x x Min
96%		 Min
85%		 x Max
5%		 0% x x x x
20 0.850 x x x x x Min
96%		 Min
85%		 x Max
10%		 0% x x x
24 0.710 x x x x x x Min
96%		 Min
85%		 x Max
10%		 0% x x
28 0.600 x x x x x x x Min
96%		 Min
85%x		 x Max
10%		 0% x
32 0.500 x x x x x x x x Min
97%		 x x Max
10%		 0%
35 0.425 x x x x x x x x x Min
85%		 x x Max
10%
42 0.355 x x x x x x x x x Min
97%		 Min
80%		 x x
48 0.300 x x x x x x x x x x Min
90%		 Min
80%		 x
80 0.180 x x x x x x x x x x x Min
90%		 Min
80%
115 0.125 x x x x x x x x x x x x Min
90%

* Hardness :

Average hardness HRC40-50
* Steel shot is conformity with MIL specification is available upon request.


* Density :

More than 7.45 g/cm3
* Microstructure :

GL,GP:Finely tempered martensite
GH:Martensite
* Size Distribution :
Mesh mm GL,GP
GH-10		 GL,GP
GH-12		 GL,GP
GH-14		 GL,GP
GH-16		 GL,GP
GH-18		 GL,GP
GH-25		 GL,GP
GH-40		 GL,GP
GH-50		 GL,GP
GH-80		 GL,GP
GH-120
7 2.800 0% x x x x x x x x x
8 2.360 x 0% x x x x x x x x
9 2.000 Min
80%		 x 0% x x x x x x x
10 1.700 Min
90%		 Min
80%		 x 0% x x x x x x
12 1.400 x Min
90%		 Min
80%		 x 0% x x x x x
14 1.180 x x Min
90%		 Min
75%		 x 0% x x x x
16 1.000 x x x Min
85%		 Min
75%		 x 0% x x x
20 0.850 x x x x x x x x x x
24 0.710 x x x x Min
85%		 Min
70%		 x 0% x x
28 0.600 x x x x x x x x x x
32 0.500 x x x x x x x x x x
35 0.425 x x x x x Min
80%		 Min
70%		 x 0% x
42 0.355 x x x x x x x x x x
48 0.300 x x x x x x Min
80%		 Min
65%		 x 0%
80 0.180 x x x x x x x Min
75%		 Min
65%		 x
115 0.125 x x x x x x x x Min
75%		 Min
60%
200 0.075 x x x x x x x x x Min
70%

* Hardness :
Type Average hardness
GP

HRC40-50
GL

HRC56-60
GH

HV800-


Micro shot of SINTOKOGIO, Ltd. is composed of extra-fine particles of steel shot featuring
its extra-low consumption rate. Micro shot is best suited for deburring small ferrous
products, descaling of heat- treated parts and shot peening of various metallic dies.
* Size Distribution :
* Hardness :
Mesh mm SBM-210T,
SBM-210C		 SBM-177T,
SBM-177C		 SBM-44T,S
BM-44C
48 0.300 x x x
60 0.250 Max 10% x x
65 0.212 x Max 10% x
80 0.180 Min 80% x x
90 0.150 Min 95% Min 80% x
120 0.106 x Min 95% Max 10%
200 0.075 x x x
325 0.045 x x Min 50%
Type Average hardness
T

HRC40-50

M

HRC50-60
C

HRC60-65



* Size Distribution :
* Hardness :
Mesh mm SB-280P
PM,PH		 SB-230P
PM,PH		 SB-170P
PM,PH		 SB-110P
PM,PH		 SB-70P
PM,PH
16 1.000 Max 5% x x x x
20 0.850 Min 65% Max 5% x x x
24 0.710 Min 90% Min 65% Max 10% x x
28 0.600 Min 98% Min 90% x x x
32 0.500 x Min 98% x Max 10% x
35 0.425 x x Min 85% x x
42 0.355 x x Min 97% x Max 10%
48 0.300 x x x Min 80% x
80 0.180 x x x Min 90% Min 80%
115 0.125 x x x x Min 90%
Type Average hardness
P

HRC47±2

PM

HRC53±2

PH

HRC60±2


*

SINTOKOGIO also delivers Super-hard cemented carbides shot, featuring its
energy saving property and superior cost performances.
* Size Distribution :
Mesh mm ST-150 ST-100 ST-50
42 0.355 x x x
50 0.300 All pass x x
60 0.250 x All pass x
70 0.212 Max 10% x x
83 0.180 x Max 10% All pass
100 0.150 x x x
120 0.125 Min 80% x Max 10%
140 0.106 x x x
200 0.075 Min 95% Min 80% x
330 0.050 x Min 90% Min 80%
400 0.038 x x Min 90%
* Hardness :

Hv 1,360-1,450



The hardness of steel shot produced by SINTOKOGIO, Ltd. and its international production
bases is precisely controlled within the appropriate range of HRC40-50. It develops a
high blast cleaning ability resulted in a substantial curtailment of blasting time and
remarkable upgrading of treating work volume. Even the workpieces having a complicated
profile with many holes and dents are cleaned quickly and uniformly due to its superior
rebounding property. SINTOKOGIO's steel shot assures customer satisfaction by shortening
processing time, increasing output and reducing cleaning cost remarkably.

Descaling of section steels, steel strips, ductile
pipes, steel plates, steel billets, forged steel
products and various heat-treated products

Descaling of H Steel Beam


Surface etching as the pre-treatment for paint coating, various bonding, metallic plating
andfor metal spraying

Shot peening for automotive parts (springs, gears,
shafts, joints, wheels, etc.), aircraft components
(turbine blades, discs, shafts, gears, frames, etc.),
railway castings (vehicles, springs, frames, bogies,
etc.), metallic patterns and dies, various plated
parts, electric discharge processed parts, welded
parts, all sorts of gears, super hard steel chips,
various tools and so on
Shot peening for turbine hub aircraft engines

Surface etching of mill rolls

Surface roughing of stones and concrete blocks

Surface roughing of concrete products


Steel grit is commonly used today as the most
powerful tool for cutting granite blocks by
gang-saws in granite industry.
Steel melting technology in SINTOKOGIO, Ltd.
and in all its overseas production plants utilizing
induction furnaces agitation property and ideal
deoxidizing effect assures a long service life and
toughness of steel grit. The angular edges of
SINTOKOGIO's steel grit is sharp and the stability
of the hardness of steel grit make the cutting
operation effective. Steel grit with various size
distribution is always ready to answer for any
optional job requirement.
Cutting of granite blocks by steel grit
assisted gang-saw

Steel grit GH-25 (Magnification×5)


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