AISI type 440C stainless steel balls offer the maximum in material strength and fair corrosion resistanc. They resist alcohol, food environments, fresh water, many petroleum products, organic materials and steam. Type 440C balls are uses in bearings, valves, locking mechanisms, fasteners and quick-disconnect couplings.

AISI 440-C      
SIZE RANGE   0.30mm (.012") up to 2-1/2"  
GRADES   3, 25, 50, 100, 200, 500, 1000, 2000  
       
CHEMICAL COMPOSTION      
CHROMIUM   16%-18%  
CARBON   .95%-1.2%  
NICKEL      
MANGANESE   1% MAX.  
SILICON   1% MAX.  
PHOSHOROUS   .040 % MAX.  
SULPHUR   .03% MAX.  
MOLYBDENUM   .75% MAX.  
       
MECHANICAL PROPERTIES
HARDNESS   RC-58 MIN.  
TENSILE STRENGTH   285,000 PSI  
ELONGATION IN TWO INCHES   2%  
REDUCTION IN AREA   55%-70%  
MODULUS OF ELASTICITY   29,000,000 PSI  
DENSITY   .277 LBS./CU.IN.  
       
PHYSICAL CHARACTERISTICS      
CORROSION RESISTANCE   FAIR  
MAGNETIC   YES  
       
GENERAL USAGE      
BEARING APPLICATIONS, VALVE APPLICATIONS. LOCKING MECHANISMS. FASTENERS, QUICK DISCONNECT COUPLINGS.
       

Abbott Ball stanless 440-C comparative chart