Steels_ Metallurgy and Applications, Third Edition

Table 3.9 Guide to the selection of category 1 through hardening steels

Heat Tensile HBrange Ruling Section

treatment strength

condition range >I3 mm >I9 mm >29 mm >63 mm >I00 mm >I50 mtn

mid)" -^43 mm <I9 - mm - (29 mm^163 mm^5100 mm^1150 mm^5250 mm

Q 625-775 179-229 MOM30

212M36'

R 700-850 201-255 080M36

212M36'

226M44'

S 775-925 223-277 120M36

080M466

216M44'

226MMC

osoM30

212M36'

OSOM40

216M44'

226M44'

120M36

OSOMSOb

216M44'

226M44'

OSOM36

212M36'

120M36

150M19

OSOM@

216M44'

226M44'

135M44

150M36

OSOMW

216M44'

226M44'

OSOM40

150M19

212M36'

135M44

150M36

OSOM50b

216M44'

226M44'

530M40

07OMw

606M36'

120M36 135M44 708M40

150M36

OSOM46b OsoMsOb

216M44' 216M44'

135M44 708M40 708M40

530M40 605M36

07oMssb

216M44'

606M36'

708M40 709M40 709M40

605M36

continued overleaf