Chrome steel balls 1/32" for Ball Valves with RoHS 

1) Size: 0.7938mm (according to clients' requirement) 

2) Materials: AISI420/440C, AISI52100 

3) Grade: G5-G100; 

4) Certificate: ISO-9001, TS-16949, ISO14001; 

5) Application field: Small balls includes computers, mobile phone lithium battery, REM and mass products like the writing instruments. 

6) Heat treatment: Balls are through hardened by heating to 840 degrees C and quenching 


The steell balls can be further geometrical designed by additional processes. The focus to the micro and nano subject has become much more important in various international development. A positive example is the new process technology for the production of small steel balls. 

Flashing: Balls are ground under pressure between rotating grooved case iron plates to improve sphericity 
Heat treatment: Balls are through hardened by heating to 840 degrees C and quenching 
They are then tempered to remove excess stresses 
Hard grinding: Hardened balls are then ground under pressure between a rotating grinding wheel and a stationary cast iron plate 
Finish lapping: Balls are carefully lapped to their final dimensions between grooved cast iron plates, one rotating and stationary