Product Description
S-2 TOOL STEEL BALLS (ROCKBIT)
AISI 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.
  
APPLICATION
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	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 Yield strength	310,000 psi 290,000 psi
Elongation in two inches	7%
Reduction in area	25%
Modulus of elasticity Density	30,000,000 psi 0.283 lbs./

AVAILABLE GRADES AND SIZES

Grade	Size Range in Inches and Millimeters
50-200	3/16"-6"  4.7625mm-150mm

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

About the outside carton:
For each carton,   length: 37cm  width:25cm   height:11cm   
Generally, if you don't want packing with our company's logo and name, we offer neutral packing.
Quqlity Control
Before packing, surface inspection will be made.
First, all the finished products will be visually inspected two times.     
After that, sample inspection is done each batch by visual inspection.
Last, sample inspection again is made by automatic checking and sorting machine.

Why choose Yusion:
 
1.rofessional manufacturer of steel balls since 1993.
2.The leading domestic facility which can supply high precision steel balls with complete specifications.
3.An integrated set of industry and trade company,professional at before & after sales service
4.Certified by ISO 9001:2000,SGS and D&B quality system certification
5.Strict quality control system,100% inspection.
6.Adequate inventory,on time delivery
7.All inquiries and messages will be replied within 24 hours
8.Free samples can be offered
We will provide customers with quality products, perfect service and fast delivery at competitive pricing! our products are very well known in more than European and other foreign countries. your cooperation and order are warmly welcome!