EN10028-3 pressure vessel steel plates

EN10028-3 pressure vessel steel plates

EN10028-3 standard covers a range of weldable fine grain steels supplied in the normalized condition and intended for pressure purposes. EN10028-3 pressure vessel steel plates have three steel grade levels: P275, P355, and P460. The leters indicate each grade’s minimum yield strength (in MPa) for plates 16 mm thick and below. Those grade levels are further subdivided on the basis of impact testing (transverse) temperature: N and NH indicate impact testing at -20 deg C or above, NL1 at -40 deg C or above, and NL2 at -50 deg C or above.

EN10028-3 pressure vessel steel plates chemical composition:

EN10028-3 Chemical elements,%
Grade No. C max. Si max. Mn P max. S max. Al (toal) min. N max. Cr max. Cu max. Mo max. Nb max. Ni max. Ti max. V max. Nb+Ti+ V max.
P275NH 1.0487 0.16 0.40 0.80
b
~ 1.50
0.025 0.015 0.020
c, d
0.012 e
0.30
e
0.30
e
0.08
0.05 0.50 0.03 0.05 0.05
P275NL1 1.0488
P275NL2 1.1104 0.020 0.010
P355N 1.0562 0.18 0.50 1.10 ~ 1.70 0.025 0.015 0.020
c, d
0.012 e
0.30
e
0.30
e
0.08
0.05 0.50 0.03 0.10 0.12
P355NH 1.0565
P355NL1 1.0566
P355NL2 1.1106 0.02 0 0.01 0
P460NH 1.8935 0.20 0.60 1.10
~ 1.70
0.025 0.015 0.020
c, d
0.025 0.30 f
0.70
0.10 0.05 0.80 0.03 0.20 0.22
P460NL1 1.8915
P460NL2 1.8918 0.020 0.010

EN10028-3 pressure vessel steel plates mechanical property:

EN10028-3 Thickness,mm Yield strength ReH MPa
min.
Tensile strength Rm MPa Elongation
A,%min.
Grade No.
P275NH P275NL1 P275NL2 1.0487
1.0488
1.1104
≤16 275 390~510 24
16<t≤40 265
40<t≤60 255
60<t≤100 235 370~490 23
100<t≤150 225 360~480
150<t≤250 215 350~470
P355N P355NH P355NL1 P355NL2 1.0562
1.0565
1.0566
1.1106
≤16 355 490~630 22
16<t≤40 345
40<t≤60 335
60<t≤100 315 470~610 21
100<t≤150 305 460~600
150<t≤250 295 450~590
P460NH P460NL1 P460NL2 1.8935
1.8915
1.8918
≤16 460 d
570~720
17
16<t≤40 445
40<t≤60 430
60<t≤100 400 540~710
100<t≤250 C C C

EN10028-3 pressure vessel steel plates impact test:

Grade Thickness, mm The impact energy min. value, KV, J at the following test temperatures (℃)
Transverse Longitudinalb
-50 -40 -20 0 +20 -50 -40 -20 0 +20
P…N
P…NH
c 5
~
250 d
30 40 50 45 65 75
P…N L1 27 35 50 60 30 40 50 70 80
P…N L2 27 30 40 60 70 42 45 55 75 85

EN10028-3 pressure vessel steel plates are widely specified in the manufacturing of pressure vessels throughout Europe and the standard is regularly seen in other parts of the world where equipment has been originally designed by a European company. EN10028-3 pressure vessel steel plates cover a range of weldable fine grain steels supplied in the normalised condition and intended for pressure purposes.

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