-
The demand for reliable materials in cryogenic service applications has increased significantly with the rapid growth of LNG terminals, industrial gas storage facilities, and low-temperature pressure vessels.2026-06-24
-
As the global demand for liquefied natural gas (LNG) continues to grow, the need for reliable materials for cryogenic storage systems has become increasingly important.2026-06-18
-
For engineers specifying materials for cryogenic pressure vessels, finding the balance between strength and ductility at sub-zero temperatures is challenging.2026-06-12
-
In industries where equipment must operate reliably under freezing or cryogenic conditions, material selection becomes a matter of safety and structural integrity.2026-06-01
-
While both ASTM A203 Grade B and ASTM A106 Grade B serve critical roles in industrial applications, they are fundamentally different in composition, purpose, and performance.2026-06-01
a387 grade 5 class 2 steel plate,a387 grade 5 class 2 steel chemical composition
a387 grade 5 class 2 steel plate under ASTM standard which is a kind of low alloy pressure vessel steel. a387 grade 5 class 2 steel is intended for use it pressure vessels and boilers where the temperature is high. ASTM A387 Grade 5 is particularly suited to this application because of the chromium and molybdenum alloying elements.
|
Element |
|
Chemical Composition (%) inc. Grade & UNS No. |
|
|
|
Grade 5 (UNS: S50200) |
|
Carbon: |
Heat Analysis: |
0.15 max |
|
|
Product Analysis: |
0.15 max |
|
Manganese: |
Heat Analysis: |
0.30 - 0.60 |
|
|
Product Analysis: |
0.25 - 0.66 |
|
Phosphorus: |
Heat Analysis: |
0.035 |
|
|
Product Analysis: |
0.035 |
|
Sulphur (max): |
Heat Analysis: |
0.030 |
|
|
Product Analysis: |
0.030 |
|
Silicon: |
Heat Analysis: |
0.50 max |
|
|
Product Analysis: |
0.55 max |
|
Chromium: |
Heat Analysis: |
4.00 - 6.00 |
|
|
Product Analysis: |
3.90 - 6.10 |
|
Molybdenum: |
Heat Analysis: |
0.45 - 0.65 |
|
|
Product Analysis: |
0.40 - 0.70 |
|
Designation: |
Requirement: |
Grade 5 |
|
a387 grade 5 class 2 |
Tensile strength, ksi [MPA] |
75 to 100 [515 to 690] |
|
|
Yield strength, min, ksi [MPa]/(0.2% offset) |
45 [310] |
|
|
Elongation in 8 in. [200mm], min % |
... |
|
|
Elongation in 2 in. [50mm], min, % |
18 |
|
|
Reduction of area, min % |
45 (measured on round specimen) |