WSD690D Introduction of steel plates for hydropower pressure steel pipes
WSD690D is a steel plate for hydropower pressure steel pipes, and the steel plate of this grade implements the technical standard of Wugang: WYJ093-2017, and the production precautions are KTZ311-2017.
Flaw detection standard: NB/T47013.3-2015, first-class qualified, the requirements of the probe composite GB/T2970 WSD690D are delivered in the quenched and tempered heat treatment state of quenching and tempering, and the thickness of
WSD690D the steel plate is subject to Class B tolerance, and the delivery is delivered at a positive tolerance
Chemical composition |
| Watch: Depu Steel Date: 2024-01-18 |
| C |
Si |
Mn |
P |
S |
Ceq |
Pcm |
Cr |
Ni |
Cu |
| ≤0.09 |
≤0.50 |
0.7~1.50 |
≤0.015 |
≤0.005 |
≤0.52 |
≤0.25 |
≤0.60 |
0.5~1.50 |
≤0.50 |
Note:
(1): In order to improve the properties of steel, other trace alloying elements other than those in the above table can be added; This value is only for WSD690D≤80mm; The data comes from the network and is for reference only.
(2): The allowable deviation of the chemical composition of the finished steel plate shall comply with the provisions of GB/T222 (3): Ceq (%) = C + Mn/6 + Si / 24 + Ni / 40 + Cr / 15 + Mo / 4 + V / 14, and the allowable deviation of
Ceq for finished product analysis shall not exceed 0.02%;
(4) :P cm(%)=C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B finished product analysisPcm allowable deviation does not exceed 0.02%,
S50C steel product performance introduction
WSD690D mechanical properties and process performance
thickness/mm Transverse tensile test Transverse impact test Transverse bending yield strength MPa Tensile strength MPa Elongation A % Temperature/ Impact absorption energy KV2/J 5% strain aging impact energy Aks/J 180° bending
d=3a
≤80 ≥690 770-930 ≥15 -20 average ≥ 100 individual ≥ 70 -20 average ≥ 47 individual ≥34 intact
> 80-120 ≥670 750-920
Remarks: The results of the Charpy V-impact (including aging impact) test are calculated according to the arithmetic average of 3 specimens, and the value of one of the specimens is allowed to be lower than the value specified in the above table, but not less than 70% of the specified value.
