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PT490 NRH

America ASME PT490NRH Specification for steel plates for pressure equipment and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: PT490NRH / PT490 NRH
Category Grade Standard Region/Area Standard Content
Metals PT490 NRH ASME SA/AS 1548 America Specification for steel plates for pressure equipment

Chemical composition(mass fraction)(wt.%) of the PT490 NRH

Element Min Max Similar
C - 0.2000 -
Mn 0.9000 1.7000 -
P - 0.0400 -
S - 0.0300 -
Si - 0.6000 -
Ni - 0.5000 -
Cr - 0.2500 -
Mo - 0.1000 -
Cu - 0.4000 -
V - 0.0300 -
Ti - 0.0400 -
Al - 0.1000 -
N - 0.0100 -
Nb 0.0100 0.0500 -
Cr+Cu+Mo - 0.4500 -
CEV - 0.4600 -

Mechanical Properties of steel grade PT490 NRH

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
757 (≥) 764 (≥) 22 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade PT490 NRH

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
34 - -     0.23 -  
537 818 - 33.3 311   -  
233 - 22 12.2   132 341

Heat Treatment of steel grade PT490 NRH

Heat treated : 1783°C - 1539°C

Technological Curves of steel grade PT490 NRH

Cross Reference Table (Equivalent Grade) of PT490 NRH

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