With the development of science, technology and industry, higher requirements have been put forward for materials, such as higher strength, resistance to high temperature, high pressure, low temperature, corrosion resistance, wear and other special physical and chemical properties. In the field of pressure or cylinder,the
P690QH gradually widely used by people.
P690QH iron is in the standard EN10028-6,which is weldable fine grain steels,quenched and tempered steel for pressure purposed steel.
Do you always confused by the P...Q,P...QL1,P...QL2?Please kindly note:
a)the basic series (P...Q)
b)series with elevated temperature properties(P...QH)
c) series with low temperature properties down to -40 °C (P...QL1);
d) series with low temperature properties down to -60 °C (P...QL2).
Please pick suitable P690QH according to your working environment.
Here attached the P690QH steel plates chemical composition and mechanical strength.
EN10028-6 P690QH Chemical Composition
|
Grade |
Chemical Composition |
|
P690QH |
The Element Max (%) |
|
C |
Si |
Mn |
P |
S |
N |
B |
|
0.20 |
0.80 |
1.70 |
0.025 |
0.015 |
0.015 |
0.005 |
|
Mo |
Cu |
Nb |
Ni |
Ti |
V |
Zr |
|
0.70 |
0.30 |
0.06 |
2.50 |
0.05 |
0.12 |
0.15 |
The P690QH steel products percentage of grain refining elements shall be at least 0.015%, Alumnium is also included in these elements.
The minimum content of 0.015% applies here to dissolved aluminium.This value is regarded as attained if the total aluminium content is at least 0.018%
EN10028-6 P690QH Mechanical Property
|
Grade |
Mechanical Property |
|
P690QH |
Thickness |
Yield |
Tensile |
Elongation |
|
mm |
Min Mpa |
Mpa |
Min % |
|
t≤50 |
690 |
770-940 |
14% |
|
50＜t≤100 |
670 |
770-940 |
14% |
|
100＜t≤150 |
630 |
720-900 |
14% |
From the above chart,the P690QH steel plates ,when T≤50,Yield strength(Mpa) is 690Mpa, Tensile strength(Mpa) is 770-940 Elongation(%)Min:14%.
Shanghai Katalor is professional P690QH steel plates supplier,we aim to provide best quality,best serve,best price to customer.If you have P690QH need,please contact Katalor freely.
