Thickness ranges from 100 to 400mm P355NH Steel Boiler Heavy Plate

carbon steel plate and sheet ASTM A516 gr 70

Thickness ranges from 100 to 400mm P355NH Steel Boiler Heavy Plate

A pressure vessel steel grade with good weldability and high resistance to brittle cracking, P355NH is used by the world’s fabricators for the manufacture of pressure vessel tanks for the storage of pressurized gases.

P355NH Chemical composition cast analysis:

Element P355NH  Max % Element P355NH max %
C 0.18 Cr 0.30
Si 0.50 Cu 0.30
Mn 1.10-1.70 Mo 0.08
P 0.025 Nb 0.050
S 0.015 Ni 0.50
AL 0.020 Ti 0.03
N 0.012 V 0.01

 

P355NH Mechanical properties:

Grade Type Thickness Yield Strength Tensile Strength Elongation Impact Energy
(mm) MPa (min) MPa % (min) (KV J) (min)
-20 degree
P355NH Normalized ≤ 16 355 490-630 22 30
16>to≤40 345 490-630 22 30
40>to≤60 335 490-630 22 30
60>to≤100 315 470-610 21 30
100>to≤150 305 460-600 21 30
150>to≤250 295 450-590 21 30

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