Manufacturing and development of bearings for special environment  | balls, bearing and related parts | BNB I&T Co., LTD.
 
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Stainless Steel Ball
 
 
Stainless Ball (Austenite stainless ball)
Chemical Composition
Sign Chemical Composition
C Si Mn P S Ni Cr MO
SUS304 0.08 1 2 0.045 0.03 8~10.5 18~20  
SUS316L 0.03 1 2 0.045 0.03 12~15 16~18 2~3
 
Product Grade Unit:㎛
Grade Scope of name Shape precision
and roughness
Section precision and gauge
Metric Inch Diameter
(VDWS)
Sphericity
(Max.)
Surface
roughness
Ra
LOT difference
(VDWL)
Gauge interval
40 0.3-5.0 0.025-2 1 1 0.08 2 4
100 0.3-65 0.025-4½ 2.5 2.5 0.125 5 10
200 0.3-65 0.025-4½ 5 5 0.2 10 15
1000     25.4 25.4   50.8  
 
SUS304
It is used when hardened stainless steel cannot meet quality and tension condition.
The most widely used material with excellent corrosion resistance, heat resistance and mechanical properties.
Production scope : 0.8mm~50.8mm
Applications : Electronic appliance, medical device, kitchen utensil, slide rail, valve, ball mill, spray, pump
 
SUS316L
Similar to 304 but with molybdenum (Mo) for better corrosion resistance. 
It was developed for more efficient corrosion resistance against sulphate compounds and is currently widely used.
Production scope : 0.8mm~50.8mm
Applications : accessory, ship-making part, pump, cosmetics, electrical part, ball mill.