Katalor is a professional supplier for pressure vessels steels. One of the professional plates are under ASTM A302M--Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nicke.
ASTM A302 Grade D chemical composition:
|
Grade |
Thickness |
C |
Mn |
Si |
P max |
S max |
Mo |
Ni |
|
A302 Grade D |
≤25mm |
0.20 |
1.07-1.62 |
0.13-0.45 |
0.025 |
0.025 |
0.41-0.64 |
0.67-1.03 |
|
25~50mm |
0.23 |
|
>50mm |
0.25 |
ASTM A302 Grade D mechanical properties:
|
Grade |
Tensile Strength (MPa) |
Yield Strength (MPa) |
% Elongation in 2 in.(50mm) min |
% Elongation in 8 in.(200mm) min |
Impacting Test Temperature(°C) |
|
A302 Grade D |
550-690 |
345 |
20 |
17 |
-20,40,-60 |
Under standard ASTM A302M, there are two grade of manganese-molybdenum-nickel alloy steel plates--Grade C and Grade D. The difference between ASTM A302 Grade D & Grade C is the content of Nickel, ASTM A302 Grade D has 0.67-1.03% Nickel for product analysis and 0.7-1.0% Nickel for heat analysis.
In addition to the basic requirements of this specification ASTM A320M, certain supplementary requirements ASTM A302 Grade D are available when additional control, testing, or examination is required to meet end use requirements.
The steel A302 Grade D shall be killed and shall conform to the fine grain size requirement of Specification A20/A20M. If the requirements of this specification ASTM A302 Grade D are in conflict with the requirements of Specification A20/A20M, the requirements of this ASTM A302M specification shall prevail.
