ASTM A516 Grade 55 specification covers carbon steel plates intended primarily for service in welded pressure vessels where im-proved notch toughness is important.
ASTM A516 Grade 55 chemical compositions:
|
Grade:
A516 Grade 55 |
Thickness |
|
1 / 2 in. [12.5 mm] and under |
Over 1 / 2 in. to 2 in. [12.5 to 50 mm], incl |
Over 2 in. to 4 in. [50 to 100 mm], incl |
Over 4 to 8 in. [100 to 200 mm], incl |
Over 8 in. [200 mm] |
|
Carbon, max |
0.18 |
0.20 |
0.22 |
0.24 |
0.26 |
|
Mn |
0.55-1.30 |
0.55-1.30 |
0.55-1.30 |
0.55-1.30 |
0.55-1.30 |
|
Si |
0.13-0.45 |
0.13-0.45 |
0.13-0.45 |
0.13-0.45 |
0.13-0.45 |
|
P max |
0.035 |
0.035 |
0.035 |
0.035 |
0.035 |
|
S max |
0.035 |
0.035 |
0.035 |
0.035 |
0.035 |
ASTM A516 Grade 55 steel shall conform to the chemical requirements given in above table unless otherwise modified in accordance with Supplementary Requirement S17, Vacuum Carbon-Deoxidized Steel, in Specification A 20/A20M.
ASTM A516 Grade 55 mechanical properties:
|
Grade |
Tensile Strength (MPa) |
Yield Strength (MPa) min. |
% Elongation in 2 in.(50mm) min |
% Elongation in 8 in.(200mm) min |
|
A516 Grade 55 |
380-515 |
205 |
27 |
23 |
ASTM A516 Grade 55 steel, as represented by the tension test specimens, shall conform to the requirements given in Table 2.
ASTM A516 Grade 55 plates 1.50 in. [40 mm] and under in thickness are normally supplied in the as-rolled condition. The plates may be ordered normalized or stress relieved, or both. ASTM A516 Grade 55 plates over 1.50 in. [40 mm] in thickness shall be normalized.
ASTM A516 plates under this specification are available in four grades having different strength levels as follows:
Grade U.S. [SI] Tensile Strength, ksi [MPa]
55 [380] 55–75 [380–515]
60 [415] 60–80 [415–550]
65 [450] 65–85 [450–585]
70 [485] 70–90 [485–620]
ASTM A516 Grade 55 steel plates supplied to this product specification shall con- form to Specification A 20/A 20M, which outlines the testing and retesting methods and procedures, permissible variations in dimensions and mass, quality and repair of defects, marking, loading, and so forth. Katalor has large stock of ASTM A516 Grade 55 steel plates, and we can also order the ASTM A516 Grade 55 future goods as your demanding sizes and detail requirements if the quantity is favorable. Feel free to contact us if have needs.
