1.0571 Datasheet
P355QH1
high-grade structural steel; unalloyed; pressure vessel steel
-
P355QH1 is a pressure vessel steel with good cold toughness and excellent weldability. The designation 1.0571/P355QH1 in accordance with EN 10222-4 is usually used for flanges and forgings. For corresponding the designation 1.8867/P355QH to EN 10028-6 is used for corresponding flat products. Both materials are mainly used in chemical tank construction and in the petroleum petroleum industry.
Composition
C
Si
Mn
P
S
Al
Cr
Cu
Mo
N
Nb
Ni
V
min.
-
0,10
0,90
-
-
0,0200
-
-
-
-
-
-
-
max.
0,20
0,50
1,65
0,025
0,015
0,0600
0,30
0,20
0,080
0,020
0,050
0,30
0,10
C
max.
0,20
Si
min.
0,10
max.
0,50
Mn
min.
0,90
max.
1,65
P
max.
0,025
S
max.
0,015
Al
min.
0,0200
max.
0,0600
Cr
max.
0,30
Cu
max.
0,20
Mo
max.
0,080
N
max.
0,020
Nb
max.
0,050
Ni
max.
0,30
V
max.
0,10
Standards and designations
Material group
High-quality engineering steel
AFNOR
P355QH1
B.S.
P355QH1
Fields of application
Chemistry, petrochemistry
Power engineering
Pressure vessel construction
Plant construction
Penstock construction
Apparatus engineering
Mechanical engineering
Steam boiler construction
Attributes
More properties
very good weldability
good machinability
suitable for cold forming
good mechanical properties
good cold toughness
Delivery forms
Cut to size/custom made
Profile tube
Round
Round tube/bushing
Sheets/sheet blanks/plates
Square
