AISI type 304 stainless steel balls are used where good corrosion resistance is important, but hardness is not. They offer good resistance to atmospheric corrosion, dyes, food environments, sterilizing solutions and many organic and inorganic materials. Type 304 balls are used in aerosol and dispenser valves, medical applications, animal feeders, trigger sprayers, finger pumps and food processing.
AISI type 316 stainless steel balls offer excellent corrosion resistance and resistance to sulphuric acid compounds. This austenitic steel includes 2-3% molybdenum. Type 316 balls are used in trigger sprayers, bearings, dispenser valves, body jewelry, lotion pumps, quick-disconnect couplings and aerospace applications.
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 type 430 stainless steel balls provide fair to-good corrosion resistance. They resist corrosion from fresh water, steam, food environments, dairy products, nitric acid and many petroleum products and organic material. Applications include balls in cosmetics agitators such as nail polish and eyeliners,as dispenser pump balls and valve balls.
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.