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S2 Rockbit

 

 

Goods and services provided by K-mac Plastics (MI, USA).
Sold by 2CheckOut.com Inc. (Ohio, USA).

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.

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.

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

� copyright 2005 Hoover Precision Products, Inc., All Rights Reserved

-

S2 Rockbit Balls

 

Click Here for Ball Terms and Definitions (Grades Available and Tolerances)


Rockbit Balls
Balls per Pkg Stock # Grade # Diameter  Price/Pkg
100 KB-1802 200 0.187 $7.60
100 KB-1803 200 0.250  $14.12
100 KB-1804 200 0.312  $21.72
50 KB-1805 200 0.437  $24.00
50 KB-1806 200 0.500  $29.20
50 KB-1807 200 0.562  $38.52
20 KB-1818 200 0.687  $24.00
20 KB-1809 200 0.750  $33.00
20 KB-1800 200 0.812  $44.00
10 KB-1811 200 0.875  $26.76
10 KB-1835 200 0.937  $30.96
10 KB-1814 200 1.00  $37.84

 
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Contact Kmac Plastics

 

K-Mac Plastics  3821 Clay Ave. SW, Wyoming, MI  49548 

sales@k-mac-plastics.net

 

616-406-0671 

  616-406-0682 fax