ASTM A537 Class 1 specification covers the standard for heat-treated carbon manganese-silicon steel plates intended for fusion welded pressure vessels and structures. The steel shall be killed and undergo normalization, quenching and tempering. Heat and product analyses shall be performed on the materials and results shall conform to the required values in chemical composition in carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium and molybdenum. Mechanical testing like tension test shall be done on the plates and shall conform to the required tensile strength, yield strength, and elongation.
This ASTM A537 specification covers heat-treated carbon-manganese-silicon steel plates intended for fusion welded pressure vessels and structures.
ASTM A537 Class 1 steel maximum thickness of plates furnished under this specification is 4 in. [100 mm] for Class 1 and 6 in. [150 mm] for Class 2 and Class 3.
The ASTM A537 Class 1 material values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system is to be used independently of the other without combining values in any way.
ASTM A537 Class 1 chemical composition:
|
Grade |
C max |
Si |
Mn |
P max |
S max |
Mo max |
Ni max |
|
A537 Class 1 |
0.24 |
0.13-0.55 |
0.92-1.72 |
0.035 |
0.035 |
0.09 |
0.38 |
ASTM A537 Class 1 mechanical properties:
|
Grade |
Tensile Strength(MPa) |
Yield Strength(MPa) min |
% Elongation in 2 in.(50mm) min |
Impacting Test Temperature(°C) |
|
A537 Class 1 |
450-585 |
310 |
18 |
-20,40,-60 |
Application of ASTM A537 Class 1:
ASTM A537 Class 1 Boiler container plate is used in the manufacture of petroleum, chemical, gas separation, gas leakage of the container or other similar devices, such as all kinds of tower, heat exchanger, storage tank, tank car and other high quality carbon structural steel and high strength low alloy structural steel plate.
