ASTM A387GR21CL1|ASTM A387GR.21CL.1 Steel Plate supplier
Keywords: ASTM A387GR21CL1, ASTM A387GR.21CL.1, A387 Grade 21 Class 1, ASTM A387 GR.21 CL.1
Adopt Standard: ASTM A387
Gang steel grade
| ASTM A387 | Grade | Grade |
| A387Gr12cl1 | A387Gr12cl2 | A387Gr11cl1 |
| A387Gr11cl2 | A387Gr22cl2 | A387Gr22cl1 |
| A387Gr22L | A387Gr21cl2 | A387Gr21cl1 |
| A387Gr21L | A387Gr5cl1 | A387Gr5cl2 |
| A387Gr9cl1 | A387Gr9cl2 | A387Gr91 |
| A387Gr911 | A387Gr2cl1 | A387Gr2cl2 |
A387 Grade 21 Class 1
A387 Grade 21 Class 1 is a chromium molybdenum alloy steel plates intended primarily for welded boiler and pressure vessels designed of elevated temperature service. The Cr content 3% and the Mo content 1%.
Each grade except grade 21L,Grade 22L,Grade
91 and Grade 911 is available in two classes of tensile strength levels. Grade
91 and Grade 911 are available only as Class 2.
A387 Grade 21 Class 1 max thickness of
plates is limited only by the capacity of the composition to meet specified
mechanical property requirements.
Gangsteel is a large agent in HBIS and
cooperated with Wuyang Iron and steel co.,ltd to export high quality and super
thickness steel plate.
A387 Grade 21 Class 1 steel Chemical requirement in Product
analysis
| C % | Mn % | P % | S % | SI % | Cr % | Mo % |
| 0.04-0.15 | 0.25-0.66 | 0.035 | 0.035 | 0.50 | 2.63-3.37 | 0.85-1.15 |
| Ni % | V % | Nb % | B % | Nitrogen | AL % | Tungsten |
Mechanical
Property A387 Grade 21 Class 1
| Mechanical Property A387 Grade 21 Class 1 | A387 Grade 21 Class 1 |
|
Tensile
strength, kis [MPa]
Yield
strength, min, kis [MPa] Elongation in under [200mm], min, % Elongation in under [50mm], min, % | 415-585205 …. 18 |
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