Chemical Composition (%)

 

Designation

Grade

Chemical Composition (%)

C

Si

Mn

P

S

Nb

V

CE*

N(ppm)**

ASTM A36

A36

0.26max

0.40max

-

0.40max

0.050max

-

-

-

-

ASTM A572

Grade 42

0.21max

0.40max

1.35max

0.40max

0.050max

0.005~0.050

0.010~0.15

-

-

Grade 50

0.23max

0.40max

1.35max

0.40max

0.050max

0.005~0.050

0.010~0.15

-

-

ASTM 136

A36/

 

 

 

 

 

 

 

 

 

/A572G50

A57250

0.22max

0.40max

0.50-1.35

0.40max

0.050max

0.005~0.050

0.010~0.15

-

-

JIS G 3101

SS400

-

-

-

0.50max

0.50max

-

-

-

-

SS490

-

-

-

0.50max

0.50max

-

-

-

-

JIS G 3106

SM400A

0.23max

-

Cx2.5min

0.35max

0.35max

-

-

-

-

SM400B

0.20max

0.35max

0.60~1.40

0.35max

0.35max

-

-

-

-

SM490A

0.20max

0.55max

1.60max

0.35max

0.35max

-

-

-

-

SM490B

0.18max

0.55max

1.60max

0.35max

0.35max

-

-

-

-

SM490YA

0.20max

0.55max

1.60max

0.35max

0.35max

-

-

-

-

SM490YB

0.20max

0.55max

1.60max

0.35max

0.35max

-

-

-

-

SM520B

0.20max

0.55max

1.60max

0.35max

0.35max

-

-

-

-

EN 10025

S235JRG2

0.17max

-

1.40max

0.045max

0.045max

-

-

0.35max

90max

S275JR

0.21max

-

1.50max

0.045max

0.045max

-

-

0.40max

90max

S275JO

0.18max

-

1.50max

0.040max

0.040max

-

-

0.40max

90max

S355JR

0.24max

0.55max

1.60max

0.045max

0.045max

-

-

0.45max

90max

S355JO

0.20max

0.55max

1.60max

0.040max

0.040max

-

-

0.45max

90max

DIN 17100

RST37-2

0.17max

-

-

0.050max

0.050max

-

-

-

90max

ST44-2

0.21max

-

-

0.050max

0.050max

-

-

-

90max

BS 4360

40B

0.20max

0.50max

1.50max

0.50max

0.50max

-

-

-

-

40C

0.18max

0.50max

1.50max

0.50max

0.50max

-

-

-

-

43A

0.25max

0.50max

1.60max

0.50max

0.50max

-

-

-

-

43B

0.22max

0.50max

1.50max

0.50max

0.50max

-

-

-

-

43C

0.18max

0.50max

1.50max

0.50max

0.50max

-

-

-

-

50A

0.23max

0.50max

1.60max

0.50max

0.50max

0.003~0.1

0.003~0.1

-

-

50B

0.20max

0.50max

1.50max

0.50max

0.50max

0.003~0.1

0.003~0.1

-

-

50C

0.20max

0.50max

1.50max

0.50max

0.50max

0.003~0.1

0.003~0.1

-

-

Mn Cr+Mo+V Ni+Cu
CE = C+ --------------+ --------------- + ---------------
6 5 15

It is permissible to exceed the specified values provided that for each increase of
1 Dppm N the P max. content will be reduced by 0.005% ; the N content of the
tadle analysis, however, shall not be more than 120ppm. (1ppm=0.0001%)