Grade

CHEMICAL COMPOSITION

USA

SAE/AISI

C

%

Si

%

Mn

%

P y S

≤%

Cr

%

Mo

%

Ni

%

V

%

1045

0.42-0.50

≤0.40

0.50-0.80

0.035

≤ 0.40

≤ 0.10

≤ 0..4

-

1050

0.47～0.55

0.17～0.37

0.50～0.80

0.035

≤ 0.40

≤ 0.10

≤ 0..4

-

1055

0.52-0.60

0.15-0.35

0.60-0.90

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1060

0.57-0.65

0.15-0.35

0.60-0.90

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1065

0.60-0.70

0.15-0.30

0.60-0.90

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1070

0.65-0.73

0.15-0.35

0.60-0.90

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1075

0.70-0.80

0.15-0.35

0.60-0.90

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1080

0.7S-0.88

0.15-0.30

0.60-0.90

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1084

0.80-0.90

0.15-0.35

0.40-0.70

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

1095

0.95-1.05

0.15-0.35

0.30-0.60

0.025

≤ 0.40

≤ 0.10

≤ 0.40

-

6150

0.47-0.55

≤ 0.40

0.70-1.10

0.025

0.90-1.20

≤ 0.10

0.90-1.20

0.10-0.25

APPROXIMATE EQUIVALENCE

USA

SAE/AISI

China

GBT

German

DIN

Great Britain

BS

France

NFA

European

EN

Italy

UNI

Japan

JIS

1045

45#

C45/CK45

XC 45

C45E

C 46/C 43

S45C

1050

50#

C5O/CK5O

CS50

XC50

C50E

C53

S50C/S53C

1055

CK 55

EN9

XC55

C55

S55C

1060

60#

C60/CK60

CS60

XC60

C60E

C60

SUP 11A/S58C

1065

65Mn

EN 42F

SUP2 S65-CSP

1070

C67/CK67

CS70

XC 68

C67S

C70

S70C-CSP

1075

75#

C75/CK75

EN 42J

XC75

C75S

C75

1080

C80

CS80

1084

T8

CK 85

XC90

C85S

C 90

SK5

1095

T10

CK 101

CS95

XC100

C100

SK4/SUP4

6150

50CrV4

50CV4

EN 47 / 735A50

5OCrV4

50CrV4

50CrV4

SUP 10