JIS G4502 STRUCTURAL STEELS WITH SPECIFIED HARDENABILITY BANDS

Symbol

JIS G4502 STRUCTURAL STEELS WITH SPECIFIED HARDENABILITY BANDS

C

Si

Mn

P

S

Ni

Cr

Mo

Mn

SMn420H

0.16~0.23

0.15~0.35

1.15~1.55

0.030

Max

0.030

Max

0.250

Max

0.350

Max

–

SMn433H

0.29~0.36

SMn438H

0.34~0.41

1.30~1.70

SMn443H

0.39~0.46

Mn-Cr

SMnC420H

0.16~0.23

1.15~1.55

0.350~0.70

SMnC443H

0.39~0.46

1.30~1.70

Cr

SCr415H

0.12~0.18

0.55~0.95

0.85~1.25

SCr420H

0.17~0.23

SCr430H

0.27~0.34

SCr435H

0.32~0.39

SCr440H

0.37~0.44

Cr-Mo

SCM415H

0.12~0.18

0.15~0.30

SCM418H

0.15~0.21

SCM420H

0.17~0.23

SCM425H

0.23~0.28

SCM435H

0.32~0.39

0.15~0.35

SCM440H

0.37~0.44

SCM445H

0.42~0.49

SCM822H

0.19~0.25

0.35~0.45

Ni-Cr

SNC415H

0.11~0.18

0.30~0.70

1.95~2.50

0.20~0.55

–

SNC631H

0.26~0.35

2.45~3.00

0.55~1.05

SNC815H

0.11~0.18

2.95~3.50

Ni-Cr-Mo

SNCM220H

0.17~0.23

0.60~0.95

0.35~0.75

0.35~0.65

0.15~0.30

SNCM420H

0.17~0.23

0.40~0.70

1.55~2.00

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