(UNS S42020)
Single Figures are Maximums
0.15 C min., 1.25 Mn, 0.06 P, 0.15 S min., 1.00 Si, 12.00/14.00Cr, 0.60 Mo,
Bal. Fe
Type 420F, a free-machining version of Type 420,
is a hardenable 12% chrome steel with higher strength, hardness, and wear resistance
than Type 410.
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