Q890E Chemical requirement
|
Grade |
Chemical requirement or element Max % |
|||||||||||||
|
|
C |
Si |
Mn |
P |
S |
Cu |
Cr |
Ni |
Mo |
B |
V |
Nb |
Ti |
|
|
Q890E |
0.2 |
0.8 |
1.7 |
0.020 |
0.010 |
0.5 |
1.5 |
2 |
0.7 |
0.005 |
0.12 |
0.06 |
0.05 |
|
Q890E steel plate is a high-strength quenched and tempered structural steel plate. In its grade designation, "Q" stands for yield strength, "890" represents the yield strength value, and "E" indicates the quality level. This steel plate conforms to the standard GB/T 16270-2009.
During the manufacturing process, Q890E steel plate undergoes quenching and tempering treatment, providing excellent mechanical properties. Its chemical composition includes elements such as carbon, silicon, manganese, phosphorus, sulfur, niobium, vanadium, titanium, chromium, copper, molybdenum, and nitrogen. The dimensions, shape, weight, and permissible deviations of Q890E steel plate shall comply with the provisions of GB/T 709. This steel plate is smelted by oxygen converter or electric furnace. Inspection of this steel plate shall be carried out sheet by sheet, including tests for mechanical and technological properties.
|
Grade |
Property |
Impact test |
|||||||||
|
Q890E |
Yield Mpa Min |
Tensile Mpa |
Elongation |
Min J |
|||||||
|
Thickness mm |
Thickness mm |
Degree |
|||||||||
|
50 |
50-100 |
100-150 |
50 |
50-100 |
100-150 |
% |
0 |
-20 |
-40 |
-60 |
|
|
890 |
830 |
- |
940-1100 |
- |
11 |
|
|
27 |
|
||
Q890E steel plate is mainly used in manufacturing steel structural components requiring good weldability, such as coal mine hydraulic supports, heavy-duty vehicles, and engineering machinery. Examples include drilling rigs, electric shovels, electric wheel dump trucks, mining trucks, excavators, loaders, bulldozers, various cranes, and other mechanical equipment and structural parts used in mining and various engineering constructions.
During cutting, Q890E steel plate can be processed using the natural gas flame cutting method, which involves preheating the metal to its ignition temperature, then releasing a high-pressure oxygen stream to intensify oxidation and blow away the slag to form the cut.
In summary, Q890E steel plate is a high-quality construction material with excellent mechanical properties and reliability, suitable for various applications requiring high-strength structures.
