Boiler and heat exchanger tube (Japan Standard-JIS G3461, JIS G3462)


Standard:

Japanese Industrial Standard JIS G3461 ----
Japanese Industrial Standard JIS G3462 ----


Purpose:
For the boiler pipes, tobacco pipes, superheater tubes, air preheater tubes.


The main production steel grades:
STB340, STB410, STBA22, STBA23 so on.

After consultation, can also supply other grades of steel.

Mechanical properties:

Standard

Trademark

Tensile strength (MPa)

Yield strength (MPa)

Elongation(%)

JIS G3461

STB340

≥340

≥175

≥35

STB410

≥410

≥255

≥25

JIS G3462

STBA22

≥415

≥210

≥30

STBA23

≥415

≥210

≥30


 

Chemical Composition:

Standard

Trademark

Chemical Composition

C

Si

Mn

P

S

Cr

Mo

Cu

Ni

V

JIS G3461

STB340

≤0.18

≤0.3

0.300.60

≤0.035

≤0.035

/

/

/

/

/

STB410

≤0.32

≤0.35

0.300.80

≤0.035

≤0.035

/

/

/

/

/

JIS G3462

STBA22

≤0.15

≤0.50

0.300.60

≤0.035

≤0.035

0.801.25

0.450.65

/

/

/

STBA23

≤0.15

0.501.00

0.300.60

≤0.030

≤0.030

1.001.50

0.450.65

/

/

/