ASTM A533 Grade B Class3 is a kind of Ni alloy steel plate, which used to fabric high temperature pressure vessels, the composition of Ni is 8% and 9%. A553 have two types. They are: class A and class B. A553 class B need to be done the (Quenching + Tempering) heat-treatment to meet the property requirement in the standard ASTM A553/A553M.
This specification covers 8 and 9% nickel alloy steel plates for use in the water quenched and tempered condition intended for the fabrication of welded pressure vessels
ASTM A533 Grade B Class3 chemical composition:
|
Grade |
C≤ |
Mn |
Si |
P≤ |
S ≤ |
Mo |
Ni |
|
A533 Grade B Class3 |
0.25 |
1.07-1.62 |
013-0.45 |
0.035 |
0.035 |
0.41-0.64 |
0.37-0.73 |
ASTM A533 Grade B Class3 mechanical properties:
|
Grade |
Tensile Strength(MPa) ksi |
Yield Strength(MPa) ksi MIN |
% Elongation 2in. (50mm) MIN |
|
A533 Grade B Class3 |
(690-860) 100-125 |
(750) 83 |
16 |
ASTM A533 Grade B(A533GR B) Pressure Vessel and Boiler Steel Plate are used in Pressure Vessel,Boiler,Storage Tanks and Heat Exchanger in Oil,Gas Project.
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