WDB620C high-strength steel plate with low weld crack susceptibility
WDB620C Steel Plate Introduction: WDB620C Introduction: WDB620 is a new 6kg low-welded crack sensitive high-strength steel plate (referred to as CF steel) for hydropower pressure steel pipes and unit volutes developed by Wugang in order to adapt to and meet the West-East Power Transmission Project, which is divided into two grades:
C and D. Steel plates with a thickness range of 8-100m can be provided, of which steel plates with a thickness of less than 50mm are produced by TMCP process, and steel plates with a thickness of 50-100mm are produced by quenching and tempering process
| Chemical composition |
| Watch: Depu Steel Date: 2024-01-16 |
| C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
Nb |
| ≤0.09 |
0.15-0.4 |
1.2-1.6 |
≤0.018 |
≤0.008 |
0.2-0.5 |
≤0.3 |
0.1-0.3 |
Note:
(1): In order to improve the properties of steel, other trace alloying elements other than the above table can be added, and 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 be in accordance with the provisions
of GB/T222 WDB620C mechanical properties of the steel plate: tensile strength σb (MPa): 770-930 yield strength σs (MPa): ≥690
elongation δ5/(%):
≥15
WDB620C Delivery Status: WDB620C 8≤T≤50 Control Rolling+Tempering Pcm≤0.2%.
WDB620C 50< T≤100 quenched and tempered (quenching + tempering) PCM≤0.24%<b18>WDB620C hydropower steel application: Since its successful development in 2001, it has met the technical requirements of dozens of large and medium-sized hydropower stations in China, simplifying the production process of steel pipes and saving production costs. At present, the steel plate has been recognized by a number of hydropower design institutes and construction units, with a cumulative supply of more than 10,000 tons, and the steel can also be used in bridges, ships, offshore oil platforms, coal machinery, construction machinery and other industries.
