EN10025-6 S890QL super high strength steel is a kind of low alloy high strength steel whose properties are much higher than those of common marine steel plate. On the basis of low carbon, alloying elements are added to improve permeability to obtain the mixed structure of low carbon martensite and upper bainite, which has high carbon equivalent. Its welding has the main characteristics of hot crack, cold crack, hardening tendency and hydrogen-induced crack sensitivity, and its weldability is comparatively poor.
EN10025-6 S890QL Chemical Composition
|
Grade |
Chemical Composition |
|
S890QL |
The Element Max (%) |
|
C |
Si |
Mn |
P |
S |
Nb |
V |
Ti |
Zr |
Cr |
Ni |
Mo |
Cu |
N |
|
0.22 |
0.86 |
1.80 |
0.030 |
0.017 |
0.07 |
0.14 |
0.07 |
0.17 |
1.60 |
2.1 |
0.74 |
0.55 |
0.016 |
EN10025-6 S890QL Mechanical Property
|
Grade |
Mechanical Property |
|
S890QL |
Yield Strength
mm
Min(Mpa) |
Tensile Strength
mm
Min(Mpa) |
Elongation
Min,%
|
|
≥
3
≤
50 |
＞
50
≤
100 |
＞
100
≤
150 |
≥
3
≤
50 |
＞
50
≤
100 |
＞
100
≤
150 |
|
890 |
830 |
- |
940-110 |
880-1100 |
- |
11 |
EN10025-6 S890QL is used for key components like construction machinery, mining machinery structure and so on with low temperature and high strength. EN10025-6 S890QL high strength steel plate is used for manufacturing various construction machinery, such as drilling rigs, electric shovels, electric wheel dumpers, mining trucks, excavators, loaders, bulldozers, cranes, hydraulic supports and other mechanical equipment and other structures for mining and various engineering construction pieces.
