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Product Description
S-2 Rockbit Steel balls can achieve extreme r edness. 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. 

The rockbit balls we can produce is ranging from 7.938mm~40mm with grade from G10 to 
G100.

Product Specification/Models
Rock Bit AISI S-2 Tool Steel Balls
Application: oil-well drilling, well applications, offshore drilling devices, well drilling bearings
Material: S-2 Tool Steel (Rock Bit)
Size Range: 5/16 - 1 1/2'' (7.938mm - 40mm) Grade: G10 - G100
Hardness: HRC60 - HRC67

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
Sulphur: 0.030% maximum
Vanadium: 0.5% maximum

Mechanical Properties
Hardness as measured on parallel flat surfaces is Rockwell 
"C" : 55 - 59
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./cubic inch

 

Application
oil-well drilling, well applications, offshore drilling devices, well drilling bearings

Other Information
Standard: ISO 9001-2008
OEM Service: Offered
Free Samples: Avaliable
Package: Anti-rust oil, 10kg or 20kg/ctn, wooden case and pallet, or as your requirements.
Payment Terms: 30% pre-payment in advance, the balance be arranged before shipment.

Why us ?
- Best Before and After-Sales service 
- Adequate inventory, On time delivery 
- Strong technical and sales support team 
- Strict quality control system 
- Special products can be customized