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440A STAINLESS STEEL HOLLOW BALLS
Hollow balls are utilized in weight sensitive applications in some cases requiring a combination of high surface hardness with material fracture toughness. Typical applications include aircraft ball transfer units, liquid float systems, and custom ball valves.

HARDNESS
440A stainless steel hardness is measured on parallel flats.
 

440A MATERIAL ANALYSIS
Carbon……………………………… 0.60 to 0.75%
Manganese……………………… Maximum of 1.00%
Phosphorus……………………… Maximum of 0.040%
Sulfur……………………………… Maximum of 0.030%
Silicon……………………………… Maximum of 1.00%
Chromium……………………… 16.00 to 18.00%
Molybdenum…………………… Maximum of 0.75%

Note: Trace elements not shown


 

 


 




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