Products Description
EN 10025-6 S550QL Quenched & Tempered Structural Steel Plate, also known as 550Q high-strength low-alloy (HSLA) steel plate, is produced according to EN 10025-6, which specifies hot-rolled structural steels with high yield and tensile strength in quenched and tempered condition.
The manufacturing process includes:
Quenching: Rapidly cooling the steel plate faster than in still air to increase hardness and strength.
Tempering: Heat treatment applied after quenching (or other hardening processes) to achieve the desired combination of strength, toughness, and ductility.
550Q steel plates are also subjected to low-temperature impact testing at -20°C to ensure adequate toughness in cold environments.
Products Specification
|
Gnee Grade : |
EN10025-6 S550Q |
|
Specification (mm) |
THK: 3 to 300, Width: 1500 to 4050, Length: 3000 to 27000 |
|
Standard: |
Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition |
|
Approval By Third Party |
ABS, DNV, GL, CCS, LR , RINA, KR, TUV, CE |
|
Classification: |
Hot rolled products of structural steels |
S550QChemical Composition
|
S550QChemical Composition |
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|
Grade |
The Element Max (%) |
|||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
Cr |
|
|
S550 Q |
0.20 |
0.80 |
1.70 |
0.020-0.025 |
0.010-0.015 |
0.015 |
0.005 |
1.50 |
|
Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
|
|
|
0.50 |
0.70 |
0.06 |
2.0 |
0.05 |
0.12 |
0.15 |
|
|
S550QMechanical Property
|
Grade |
S550QMechanical Property |
|||||
|
Thickness |
Yield |
Tensile |
Elongation |
Min Impact Energy
|
||
|
S550 Q |
mm |
Min Mpa |
Mpa |
Min % |
-20 |
30J |
|
3<t≦50 |
550 |
640-820 |
16 |
-20 |
30J |
|
|
50<t≦100 |
530 |
640-820 |
16 |
-20 |
30J |
|
|
100<t≦150 |
490 |
590-770 |
16 |
-20 |
30J |
|
Products Application
Storage Tanks, Low-Pressure Vessels, Temperature Controlled VesselsHeat, Heat Exchangers, Pressure Vessels, and Boilers.
