, , .
[σ]H. I. ( 1011, 101 .) [σ]H :
[σ]H=KHLC/sm, (18.22)
KHL ( 107 ):
N= KHEN [. (12.1) (12.2)]. I (. 12.3):
II. [σ] ( 9, 2362 .) ( ):
[σ] /2; v, /. [σ] >45 HRC.
III. ( 15, 20 .) [σ] :
[σ] /2; vs /.
( ) [σ] 15%.
[σ]F. , , (. 18.3).
18.3. [σ]f
. 18.3 KFL ( 106 ):
NFE = KFENK [ (12.1) (12.2)].
KFE (. 12.3):