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AISI Type 420 Stainless Steel

AISI type 420 stainless steel balls have fair-to-good corrosion resistance and good material strength. They resist corrosion from alcohol, ammonia, food environments, fresh water, many petroleum products and organic materials and some mild acid environments. They are found in bearings, valves, lighters and writing instruments.

AISI 420   
SIZE RANGE 1.00mm (.040″) up to 1-1/4″ 
GRADES: 25, 50, 100, 500, 1000, 2000 
    
CHEMICAL COMPOSITION   
CHROMIUM 12%-14% 
CARBON .15% MAX. 
NICKEL   
MANGANESE 1% MAX. 
SILICON 1% MAX. 
PHOSPHOROUS .040% MAX. 
SULPHUR .03% MAX. 
    
MECHANICAL PROPERTIES   
HARDNESS ROCKWELL 48 MIN. 
TENSILE STRENGTH 95,000-250,000 PSI 
ELONGATION IN TWO INCHES 8%-25% 
REDUCTION IN AREA 25%-50% 
MODULUS IN ELASTICITY 29,000,000 PSI 
DENSITY 0.279 LBS./CU. IN. 
    
PHYSICAL CHARACTERISTICS   
CORROSION RESISTANCE FAIR 
MAGNETIC YES 
    
GENERAL USAGE   
BEARINGS, VALVES, LIGHTERS, WRITING INSTRUMENTS
    

Abbott Ball stanless 420 comparative chart