P460NH pressure vessel steel for gas industry

EN 10028 – P460 NH/NL1/NL2

P460NH, so called for having a minimum yield strength of 460 MPa, is is a high quality pressure vessel steel grade for use in boiler and pressure vessel fabrication. It is a normalized fine grain steel with good weldability characteristics.

 

Other grade types include

NL1 – is ideal for use in low temperatures

NL2 – is ideal for use in especially low temperatures

 

Mechanical Properties of EN 10028 – P460 NH/NL1/NL2

Grade Type Thickness (mm) Yield Strength
MPa (min)
Tensile Strength
MPa
Elongation
% (min)
P460 NH Normalized ≤ 16 460 570 – 750 17
P460 NL1   16> to ≤40 445 570 – 720 17
P460 NL2   40> to ≤60 430 570 – 720 17
    60> to ≤100 400 540 – 710 17
    100> to ≤150 17

 

Chemical Composition of EN 10028 – P460 NH/NL1/NL2

  P460 NH P460 NL1 P460 NL2
C 0.20 0.20 0.20
Si 0.60 0.60 0.60
Mn 1.10 to 1.70 1.10 to 1.70 1.10 to 1.70
P 0.025 0.025 0.020
S 0.015 0.015 0.010
Al 0.020 0.020 0.020
N 0.025 0.025 0.025
Cr 0.30 0.30 0.30
Cu 0.70 0.70 0.70
Mo 0.10 0.10 0.10
Nb 0.05 0.05 0.05
Ni 0.80 0.80 0.80
Ti 0.03 0.03 0.03
V 0.20 0.20 0.20

(The combined quantities of Niobium, Titanium and Vanadium should be 0.22% max.)

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