產品形狀與規格的豐富性，專為滿足各種需求而設計

Steel Grades

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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Symbol
Chemical Composition
C
Si
Mn
P
S
Ni
Cr
Mo
SMn420RCH 0.17~0.23 0.15~0.35 1.20~1.50 0.030 Max 0.030 Max 0.250 Max 0.350 Max
SMn420HRCH 0.16~0.23 1.15~1.55
SMn433RCH 0.30~0.36 1.20~1.50
SMn433HRCH 0.29~0.36 1.15~1.55
SMn438RCH 0.35~0.41 1.35~1.65
SMn438HRCH 0.34~0.41 1.30~1.70
SMn443RCH 0.40~0.46 1.35~1.65
SMn443HRCH 0.39~0.46 1.30~1.70
SMnC420RCH 0.17~0.23 1.35~1.65 0.35~0.70
SMnC443RCH 0.40~0.46 1.30~1.70
SCr415RCH 0.13~0.18 0.60~0.90 0.90~1.20
SCr415HRCH 0.12~0.18 0.55~0.95 0.85~1.25
SCr420RCH 0.18~0.23 0.60~0.90 0.90~1.20
SCr420HRCH 0.17~0.33 0.55~0.95 0.85~1.25
SCr430RCH 0.28~0.33 0.60~0.90 0.85~1.25
SCr430HRCH 0.2~0.34 0.55~0.95 0.90~1.20
SCr435RCH 0.33~0.38 0.60~0.90 0.85~1.25
SCr435HRCH 0.32~0.39 0.55~0.95 0.90~1.20
SCr440RCH 0.38~0.43 0.60~0.90 0.85~1.25
SCr440HRCH 0.37~0.44 0.55~0.95 0.90~1.20 0.15~0.25
SCr415RC 0.13~0.18 0.60~0.90 0.85~1.25 0.15~0.30
SCr415HRCH 0.12~0.18 0.55~0.95 0.90~1.20 0.15~0.25
SCr418RCH 0.16~0.21 0.60~0.90 0.85~1.25 0.15~0.30
SCr418HRCH 0.15~0.21 0.55~0.95 0.90~1.20 0.15~0.25
SCM420RCH 0.18~0.23 0.60~0.90 0.85~1.25 0.15~0.30
SCM420HRCH 0.17~0.23 0.55~0.95 0.90~1.20
SCM425RCH 0.23~0.28 0.60~0.90 0.85~1.25
SCM425HRCH 0.55~0.95 0.90~1.20
SCM430RCH 0.28~0.33 0.60~0.90
SCM435RCH 0.33~0.38 0.85~1.25 0.15~0.35
SCM435HRCH 0.32~0.39 0.55~0.95 0.90~1.20 0.15~0.30
SCM440RCH 0.38~0.43 0.60~0.90 0.85~1.25 0.15~0.35
SCM440HRCH 0.37~0.44 0.55~0.95 0.90~1.20 0.15~0.30
SCM445RCH 0.43~0.48 0.60~0.90 0.85~1.25 0.15~0.35
SCM445HRCH 0.42~0.49 0.55~0.95 0.90~1.20 0.35~0.45
SCM822RCH 0.20~0.25 0.60~0.90 0 .85~1.25
SCM822HRCH 0.19~0.25 0.55~0.95 2.00~2.50 0.20~0.50
SNC415RCH 0.12~0.18 0.35~0.65 1.95~2.50 0.20~0.55
SNC415HRCH 0.11~0.18 0.30~0.70 2.50~3.00 0.60~1.00
SNC631RCH 0.27~0.35 0.35~0.65 2.45~3.00 0.55~1.05
SNC631HRCH 0.26~0.35 0.3~0.70 3.00~3.50 0.60~1.00
SNC815RCH 0.12~0.18 0.35~0.65 2.95~3.50 0.55~1.05 0.15~0.25
SNC815HRCH 0.11~0.18 0.30~0.70 0.40~0.70 0.40~0.60 0.15~0.30
SNCM220RCH 0.17~0.23 0.60~0.90 0.35~0.75 0.35~0.65
SNCM220HRCH 0.60~0.95 0.40~0.70 0.40~0.60
SNCM240RCH 0.38~0.43 0.70~1.00 1.60~2.00
SNCM420RCH 0.36~0.43 0.40~0.70 1.55~2.00 0.35~0.65
SNCM420HRCH 1.60~2.00 0.60~1.00
SNCM439RCH 0.36~0.43 0.60~0.90
SNCM447RCH
0.44~0.50
SNCM616RCH
0.13~0.20 0.80~1.20 2.80~3.20 1.40~1.80 0.40~0.60

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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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Symbol
Chemical Composition
C
Si
MN
P
S
S10C 0.08~0.13 0.15~0.35 0.30~0.60 0.030 Max 0.035 Max
S12C 0.10~0.15
S15C 0.12~0.18
S17C 0.15~0.20
S20C 0.18~0.23
S22C 0.20~0.25
S25C 0.22~0.28
S28C 0.25~0.31 0.60~0.90
S30C 0.27~0.33
S33C 0.30~0.36
S35C 0.32~0.38
S38C 0.35~0.41
S40C 0.37~0.43
S43C 0.40~0.46
S45C 0.42~0.48
S48C 0.45~0.51
S50C 0.47~0.53
S58C 0.50~0.56
S15C9 0.07~0.12 0.10~0.35 0.30~0.60 0.025 MAX 0.025 MAX
S20CK 0.13~0.18 0.15~0.35
S09CK 0.18~0.23

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Symbol Chemical Composition
C Si Mn P S AI
SWRCH 6A 0.08 Max 0.10 Max 0.6 Max 0.030 Max 0.035 Max 0.02 Min
SWRCH 8A 0.10 Max
SWRCH 10A 0.08~0.13 0.30~0.60
SWRCH 12A 0.10~0.15
SWRCH 15A 0.13~0.18
SWRCH 16A 0.60~0.90
SWRCH 18A 0.15~0.20
SWRCH 19A 0.70~1.00
SWRCH 20A 0.18~0.23 0.30~0.60
SWRCH 22A 0.70~1.00
SWRCH 25A 0.22~0.28 0.30~0.60
SWRCH 10K 0.08~0.13 0.10~0.35 0.30~0.60 0.030 Max 0.035 Max
SWRCH 12K 0.10~0.15
SWRCH 15K 0.13~0.18
SWRCH 16K 0.60~0.90
SWRCH 17K 0.49~0.56 0.30~0.60
SWRCH 18K 0.60~0.90
SWRCH 20K 0.18~0.23 0.30~0.60
SWRCH 22K 0.70~1.00
SWRCH 24K 0.19~0.25 1.35~1.65
SWRCH 25K 0.22~0.28 0.30~0.60
SWRCH 27K 0.22~0.29 1.20~1.50
SWRCH 30K 0.27~0.33 0.60~0.90
SWRCH 33K 0.30~0.36
SWRCH 35K 0.32~0.38
SWRCH 38K 0.35~0.41
SWRCH 40K 0.37~0.43
SWRCH 41K 0.36~0.44 1.35~1.65
SWRCH 43K 0.40~0.46 0.60~0.90
SWRCH 45K 0.42~0.48
SWRCH 48K 0.45~0.51
SWRCH 50K 0.47~0.53

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Symbol Chemical Composition
C Si Mn P S
SWRH 27 0.24~0.31 0.15~0.35 0.30~0.60 0.030 Max 0.030 Max
SWRH 32 0.29~0.36
SWRH 37 0.34~0.41
SWRH 42A 0.39~0.46 0.30~0.60
SWRH 42B 0.60~0.90
SWRH 47A 0.44~0.51 0.30~0.60
SWRH 47B 0.60~0.90
SWRH 52A 0.49~0.56 0.30~0.60
SWRH 52B 0.60~0.90
SWRH 57A 0.54~0.61 0.30~0.60
SWRH 57B 0.60~0.90
SWRH 62A 0.59~0.66 0.30~0.60
SWRH 62B 0.60~0.90
SWRH 67A 0.64~0.71 0.30~0.60
SWRH 67B 0.60~0.90
SWRH 72A 0.69~0.76 0.30~0.60
SWRH 72B 0.60~0.90
SWRH 77A 0.74~0.81 0.30~0.60
SWRH 77B 0.60~0.90
SWRH 82A 0.79~0.86 0.30~0.60
SWRH 82B 0.60~0.90

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