-
Executive Standard: SA299 Gr. B steel plates comply with the ASME standard, specifically ASTM A299/A299M.2026-08-26
-
SA299 is a carbon-manganese-silicon steel plate designed for pressure vessels—often referred to as "gas drum steel" under US standards.2026-08-19
-
ntroduction to SA299 Gr.A Steel Plate:
SA299 Gr.A is a steel plate grade designated for boilers and pressure vessels under American standards.2026-08-11 -
A285 Gr.C and SA285 Gr.C steel plates represent the same grade, though they are governed by different standards.2026-08-04
-
SA283 Gr.B is a low-to-medium strength carbon structural steel plate conforming to the American Society of Mechanical Engineers (ASME) standard.2026-07-31
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) |