EN10028-6 P460QL1 is pressure vessel steel grade that is widely recognized for its exceptional strength and durability, especially at low temperatures. This grade is part of the European standard for flat products for pressure equipment, and it is designed to withstand the rigorous demands of pressure vessel applications.
Chemical Composition:
The chemical composition of EN10028-6 P460QL1 is carefully controlled to ensure the steel's mechanical properties and weldability. The typical chemical composition includes:
|
P460QL1 Chemical Composition |
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|
Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
N |
B |
|
|
P460QL1 |
0.18 |
0.50 |
1.70 |
0.020 |
0.010 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Zr |
|
|
0.50 |
0.3 |
0.05 |
0.5 |
0.03 |
0.06 |
0.05 |
|
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
Mechanical Properties:
The mechanical properties of P460QL1 are characterized by high strength and excellent toughness, which are crucial for pressure vessel applications. The typical mechanical properties are as follows:
|
Grade |
P460QL1 Mechanical Property |
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|
Thickness |
Yield |
Tensile |
Elongation |
|
|
P460QL1 |
mm |
Min Mpa |
Mpa |
Min % |
|
6-50 |
460 |
550-720 |
19% |
|
|
50-100 |
440 |
550-720 |
19% |
|
|
100-150 |
400 |
500-670 |
19% |
|
Heat Treatment Conditions:
P460QL1 steel plates are generally supplied in the thermomechanically rolled condition (TMCP). This process involves controlled rolling and accelerated cooling to achieve the desired microstructure and mechanical properties without the need for a subsequent heat treatment.
Low-Temperature Impact Test:
Given the importance of maintaining toughness at low temperatures, P460QL1 steel is subjected to a low-temperature impact test at -40°C. The material must meet the specified impact energy requirements to ensure it can perform reliably in cold environments.
