The main difference is that P500Q steel has a lower minimum yield strength (500 MPa) compared to P690Q (>690 MPa), which also results in a lower minimum tensile strength for P500Q. Both are quenched and tempered steel plates for pressure vessels, following the EN 10028-6 standard, but P690Q is a higher-strength grade.
Supplementary Technology: HIC Test | NACE MR0175 | Z15 | Z25 | Z35 |
Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm
|
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 |
|
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
|
P690Q Chemical Composition |
|||||||
|
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 |
|
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
|
Grade |
P500Q Mechanical Property |
|||
|
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% |
|
