S-2 Rockbit Balls

S-2 Tool Steel balls are designed to achieve extreme
ruggedness. The ball surface has a smooth ground and polished
finish. These balls provide the toughness and strength necessary
for severe shock loads. S-2 Tool Steel balls are hardened
throughout and have unusually good wear characteristics.
S-2 Tool Steel balls find most frequent use in oil field
equipment and offshore drilling operations. They provide
good service in withstanding the abrasion of pulverized rock and
mud slurries.
Rockbit Balls
|
Balls per Pkg |
Stock # |
Grade # |
Diameter |
Price/Pkg |
40000 |
KB-1219 |
200 |
0.187 |
$1497.60 |
100 |
KB-1802 |
200 |
0.187 |
$4.73 |
40000 |
KB-1218 |
48 |
0.187 |
$1560.00 |
4350 |
KB-1221 |
200 |
0.250 |
$280.84 |
100 |
KB-1803 |
200 |
0.250 |
$8.62 |
4350 |
KB-1220 |
48 |
0.250 |
$292.41 |
3000 |
KB-1213 |
200 |
0.281 |
$278.64 |
3000 |
KB-1192 |
48 |
0.281 |
$290.16 |
2200 |
KB-1182 |
200 |
0.312 |
$168.43 |
100 |
KB-1804 |
200 |
0.312 |
$13.34 |
2200 |
KB-1211 |
48 |
0.312 |
$228.93 |
1300 |
KB-1184 |
200 |
0.375 |
$148.04 |
1300 |
KB-1183 |
48 |
0.375 |
$154.15 |
1300 |
KB-1186 |
200 |
0.406 |
$185.48 |
1300 |
KB-1185 |
48 |
0.406 |
$193.13 |
810 |
KB-1188 |
200 |
0.437 |
$134.43 |
810 |
KB-1187 |
48 |
0.437 |
$139.97 |
50 |
KB-1805 |
200 |
0.437 |
$13.50 |
550 |
KB-1201 |
200 |
0.500 |
$107.65 |
50 |
KB-1806 |
200 |
0.500 |
$16.70 |
550 |
KB-1189 |
48 |
0.500 |
$165.08 |
380 |
KB-1181 |
200 |
0.562 |
$102.40 |
380 |
KB-1191 |
48 |
0.562 |
$106.62 |
275 |
KB-1194 |
200 |
0.625 |
$124.93 |
50 |
KB-1807 |
200 |
0.562 |
$21.13 |
275 |
KB-1193 |
48 |
0.625 |
$130.08 |
200 |
KB-1196 |
200 |
0.687 |
$167.25 |
25 |
KB-1818 |
200 |
0.687 |
$18.92 |
200 |
KB-1195 |
48 |
0.687 |
$174.14 |
160 |
KB-1199 |
200 |
0.750 |
$163.47 |
25 |
KB-1809 |
200 |
0.750 |
$21.94 |
200 |
KB-1197 |
24 |
0.750 |
$198.74 |
160 |
KB-1198 |
48 |
0.750 |
$167.78 |
125 |
KB-552 |
200 |
0.812 |
$168.11 |
25 |
KB-1800 |
200 |
0.812 |
$28.04 |
125 |
KB-1200 |
48 |
0.812 |
$175.04 |
100 |
KB-1174 |
200 |
0.875 |
$249.43 |
10 |
KB-1811 |
200 |
0.875 |
$14.56 |
100 |
KB-1173 |
48 |
0.875 |
$259.70 |
10 |
KB-1835 |
200 |
0.937 |
$16.86 |
80 |
KB-1176 |
200 |
0.938 |
$174.68 |
80 |
KB-1175 |
48 |
0.938 |
$181.82 |
80 |
KB-1178 |
200 |
0.969 |
$193.46 |
80 |
KB-1177 |
48 |
0.969 |
$201.49 |
65 |
KB-1170 |
200 |
1.000 |
$170.30 |
65 |
KB-1149 |
48 |
1.000 |
$178.10 |
10 |
KB-1814 |
200 |
1.00 |
$19.72 |
40 |
KB-1139 |
200 |
1.125 |
$233.60 |
40 |
KB-1168 |
48 |
1.125 |
$243.20 |
30 |
KB-1141 |
200 |
1.250 |
$212.40 |
30 |
KB-1140 |
48 |
1.250 |
$220.14 |
25 |
KB-1143 |
200 |
1.375 |
$296.50 |
25 |
KB-1142 |
48 |
1.375 |
$309.00 |
20 |
KB-1145 |
200 |
1.500 |
$265.20 |
20 |
KB-1144 |
48 |
1.500 |
$276.40 |
|
 |
|
|
S-2 Tool Steel (Rockbit) Balls: Available
Grades and Sizes
|
Grade
|
Size Range in Inches and Millimeters
|
50 - 200
|
5/32 - 1 3/4
3.968 - 38.100
|
|
 |
Click here for sizes and pricing |
|
Balls per Pound
|
Size
|
Balls per Pound
|
Inches
|
Millimeters
|
3/16
|
4.762
|
1,020
|
7/32
|
5.556
|
645
|
1/4
|
6.350
|
432
|
9/32
|
7.143
|
303
|
5/16
|
7.937
|
221
|
11/32
|
8.731
|
166
|
3/8
|
9.525
|
128
|
13/32
|
10.318
|
101
|
7/16
|
11.112
|
80.6
|
15/32
|
11.906
|
65.5
|
1/2
|
12.700
|
54.0
|
17/32
|
13.493
|
445.0
|
9/16
|
14.287
|
37.9
|
5/8
|
15.875
|
27.6
|
11/16
|
17.462
|
20.8
|
3/4
|
19.050
|
16.0
|
13/16
|
20.637
|
12.6
|
7/8
|
22.225
|
10.1
|
1
|
25.400
|
6.75
|
1 1/8
|
28.575
|
4.74
|
1 1/4
|
31.750
|
3.46
|
1 1/2
|
38.100
|
2.00
|
* Upon special request only.
|
|
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 |
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Material Analysis:
S-2 Tool Steel (Rockbit) balls are manufactured to the following
chemical analysis:
|
 |
|
|
Material
|
AISI
|
Federal
|
Military
|
ASTM
|
UNS
|
AMS
|
Military and
Gov't Stds.
|
S-2 Tool Steel
|
S-2
|
QQ-T-570
|
-
|
A681
|
T-4190
|
-
|
-
|
|
 |
|
|
Chemical Analysis
|
Carbon................................................................
|
0.47% to 0.55%
|
Manganese.........................................................
|
0.30% to 0.50%
|
Silicon..................................................................
|
0.90% to 1.10%
|
Molybdenum........................................................
|
0.30% to 0.60%
|
Phosphorus.........................................................
|
0.030% maximum
|
Sulpher.................................................................
|
0.030% maximum
|
Vanadium............................................................
|
0.5% maximum
|
|
 |
|
|
Mechanical Properties
Hardness as measured on parallel flat surfaces is
Rockwell “C” 55-58. Ball of special hardness are
available upon request.
|
Tensile
strength...................................................
|
310,000 psi
|
Yield
strength.......................................................
|
290,000 psi
|
Elongation in two
inches....................................
|
7%
|
Reduction in
area................................................
|
25%
|
Modulus of
elasticity...........................................
|
30,000,000 psi
|
Density.................................................................
|
0.283 lbs./cu. in
|
|
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copyright 2005 Hoover Precision Products, Inc., All Rights Reserved |