JIS G4053 LOW-ALLOY STEEL FOR MACHINE STRCUTURE USE

Symbol

Chemical Composition

C

Si

Mn

P

S

NI

Cr

MO

SMn420

0.17~0.23

0.15~0.35

1.20~1.50

0.030 Max

0.030 Max

0.25 Max

0.35 Max

SMn433

0.30~0.36

SMn438

0.35~0.41

1.35~1.65

SMn443

0.40~0.46

SMnC420

0.13~0.18

0.15~0.35

1.20~1.50

0.35~0.70

SMnC433

0.18~0.23

1.35~1.65

SCr415

0.28~0.33

0.15~0.35

0.60~0.90

0.90~1.20

SCr420

0.33~0.38

SCr430

0.38~0.43

SCr435

0.43~0.48

SCr440

0.13~0.18

SCr445

0.16~0.21

SCM415

0.13~0.18

0.60~0.90

0.90~1.20

0.15~0.30

SCM418

0.16~0.21

SCM420

0.18~0.23

SCM421

0.17~0.23

0.70~1.00

SCM425

0.23~0.28

0.60~0.90

SCM430

0.28~0.33

1.00~1.50

SCM432

0.27~0.37

0.30~0.60

0.90~1.20

SCM435

0.33~0.38

0.60~0.90

SCM440

0.38~0.43

SCM445

0.43~0.48

SCM822

0.20~0.25

0.35~0.45

SNC236

0.32~0.40

0.15~0.35

0.50~0.80

1.00~1.50

0.50~0.90

SNC415

0.12~0.18

0.35~0.65

2.00~2.50

0.20~0.50

SNC631

0.27~0.35

2.50~3.00

0.60~1.00

SNC815

0.12~0.18

3.00~3.50

SNC836

0.32~0.40

SNCM220

0.17~0.23

0.60~0.90

0.40~0.70

0.40~0.60

0.15~0.25

SNCM240

0.38~0.43

0.70~1.00

0.15~0.30

SNCM415

0.12~0.18

0.40~0.70

1.60~2.00

SNCM420

0.17~0.23

SNCM431

0.27~0.35

0.60~0.90

0.60~1.00

SNCM439

0.36~0.43

SNCM447

0.44~0.50

SNCM616

0.13~0.20

0.80~1.20

2.80~3.20

1.40~1.80

0.40~0.60

SNCM625

0.20~0.30

0.35~0.60

3.00~3.50

1.00~1.50

0.15~0.30

SNCM630

0.25~0.35

2.50~3.50

2.50~3.50

0.30~0.70

SNCM815

0.12~0.18

0.30~0.60

4.00~4.50

0.70~1.00

0.15~0.30

SACM645

0.15~0.50

0.15~0.50

0.60 Max

0.25 Max

1.30~1.70

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