S-2 TOOL STEEL BALLS (ROCKBIT)
S-2 Tool Steel Balls are hardened throughout and have unusually good wear characteristics. These balls are intended for applications that require extreme toughness and strength. They provide good service in withstanding the abrasion, high shock resistance, severe pressure impact, etc.
We manufacture a complete line of Rockbit balls in various diameters. Rockbit Balls are designed for extreme ruggedness. The balls are made from S-2 tool steel and specially heat treated to provide excellent hardness and wear resistance combined with toughness and impact resistance to survive extreme shock loads found in the drilling industry.
Applications:
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.
Specification:
Size 3/16"-6′
Hardness HRC60-HRC66
Diamenter 4.7625mm-150mm
Grade G10-G600
International Standard ASTM/AISI/JIS/DIN
Material AISI Military ASTM UNS AMS DIN JIS/SUJ
S-2 Tool Steel S-2 A-681 T-41902
Additional testing may be required to certify that materials comply with specific standards.
MATERIAL ANALYSIS
S-2 Tool Steel (Rockbit) Balls are manufactured to the following chemical analysis:
Chemical Analysis
Carbon 0.47% to 0.55%
Manganese 0.30% to 0.50%
Silicon 0.90% to 01.10%
Molybdenum 0.30% to 0.60%
Phosphorus 0.030% maximum
Sulphur 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
Packing
1.Firstly we pack the balls in cartons.
One type inside has two cartons.
For each carton, length: 22cm width:17cm height:10cm
Another type inside has four cartons:
For each carton, length: 15cm width:12cm height:10cm
2.Then, we pack our balls using wooden pallet in our export business :
1).Put the plastic paper in the pallet(waterproof).
The size of wooden pallet: 860mmm 800mm 750mm
2).Put the ball carton into the pallet ,and fix the pallet.
3).Hooping the pallet tightly using the steel rods
How to Inquire
When ordering balls, please specify the following:
1. Nominal ball diameter.
2. Type of material.
3. Precision grade.
All standard balls are always in stock and ready for immediate off-the-shelf delivery. If your application calls for custom balls, send us your specifications and we'll gladly meet them