P690Q and P500Q are high-strength, quenched and tempered (Q) steel plates specified under the European standard EN 10028-6, primarily used for pressure vessels, boilers, and heavy-duty structural applications requiring excellent load-bearing capacity and weldability, with the number indicating the minimum yield strength (690 MPa for P690Q, 500 MPa for P500Q).
Chemical Composition
|
P500Q Chemical Composition |
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|
Grade |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
N |
B |
|
|
P500Q |
0.18 |
0.60 |
1.70 |
0.025 |
0.015 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Cr |
|
|
0.70 |
0.3 |
0.05 |
1.50 |
0.05 |
0.08 |
1.00 |
|
|
P690Q Chemical Composition |
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|
Grade |
The Element Max (%) |
||||||
|
C |
Si |
Mn |
P |
S |
N |
B |
|
|
P690Q |
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Cr |
|
|
0.70 |
0.3 |
0.06 |
2.50 |
0.05 |
0.12 |
1.50 |
|
Mechanical Property
|
Grade |
P500Q Mechanical Property |
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|
Thickness |
Yield |
Tensile |
Elongation |
|
|
P500Q |
mm |
Min Mpa |
Mpa |
Min % |
|
6-50 |
500 |
590-770 |
17% |
|
|
50-100 |
480 |
590-770 |
17% |
|
|
100-150 |
440 |
540-720 |
17% |
|
|
Grade |
P690Q Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
P690Q |
mm |
Min Mpa |
Mpa |
Min % |
|
6-50 |
690 |
770-940 |
14% |
|
|
50-100 |
670 |
770-940 |
14% |
|
|
100-150 |
630 |
720-900 |
14% |
|
Key Characteristics:
Standard: EN 10028-6 (for P690Q) and EN 10028-6 (for P500Q).
Type: Quenched & Tempered (Q) fine-grain steel.
Strength: High tensile strength, with P690Q offering a minimum yield strength of 690 MPa and P500Q offering 500 MPa, making them suitable for demanding conditions.
Applications: Ideal for pressure vessels, storage tanks, and construction components where high strength-to-weight ratio is crucial, notes TJC Steel.
Properties: Good weldability and impact toughness at low temperatures, ensuring reliability in diverse environments.
