S2 Tool Steel - Rockbit

Balls: S-2 Tool Steel (Rock Bit)

Material

Size Range

Grade

S-2 Tool Steel (Rock Bit)

7/32 - 1 3/8” (5.556mm - 34.9mm)

200


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.

 

Material Analysis:
All sizes and grades are of the highest quality and in accordance with AISI and ISO3290 type S-2 Tool Steel Rockbit.

Material

AISI

Federal

Military

ASTM

UNS

AMS

Military & 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.

 

All international specifications are for geometry only and not for mechanical properties.  
For material certification & mechanical properties please contact your local representative. 

 

Please note that the material information provided on our website is for informational purposes only. The properties listed per product type are typical and can vary based on suppliers of raw materials and customer specific needs. Please contact customer service for verification prior to ordering. Price and delivery may be subject to change based on specific requirements.

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