DIN 17155 HII pressure vessel steel plate is a kind of non alloy quality steel with high temperature performance. It belongs to medium pressure boiler steel plate.DIN HII steel plate has features of good plasticity, toughness, cold bending property and weldability. 

Common delivery status of DIN 17155 HII pressure vessel steel plate are:
Hot rolling, normalizing (N), controlled rolling (M), quenching and tempering (QT).

DIN 17155 HII pressure vessel steel plate chemical composition:


Grade

C

Si

Mn

P

S

Al

Cr

Cu

Mo

Nb

Ni

Ti

V

HII

0.20

0.35

0.50-1.30

0.035

0.030

0.020

0.25

0.30

0.10

0.01

0.30

0.03

0.03

DIN 17155 HII pressure vessel steel plate mechanical properties:


Grade

Material
Number

Yield strength

Tensile strength

Elongation

Thickness (mm)

≤16

16-40

40-60

60-100

100-150

≤60

60-100

100-150

≤60

60-150

HII

1.0425

265

255

245

215

200

410-530

410-530

400-530

22

21

DIN 17155 HII pressure vessel steel plates are widely used to manufacture reactor, heat exchanger, separator, spherical tank, oil gas tank, liquefied gas tank, nuclear reactor pressure shell, liquefied petroleum gas cylinder, turbine spiral case, etc.