USA UNS S44023
AISI
American Iron and Steel Institute
440FSe
Corresponding Standard ASTM A582/A582M-2012(R2017)
Free-Machining Stainless Steel Bars
Classification Martensitic Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Se
Minimum Value 0.95 - - - - 16 - - 0.15
Maximum Value 1.2 1 1.25 0.06 0.06 18 0.5 0.6 -
Mechanical Properties
Heat Treatment or Condition
Hardness
HBW
Annealing ≤285

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