Factors affecting the quality of S420NL material steel


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Analysis of mechanical properties of WQ960EZ25: yield strength not less than 960MPa, tensile strength 980-1150 MPa.
S420NL material steel, WQ960EZ25 quenched and tempered high-strength steel can be used to manufacture pressure-resistant shell parts, deep tide life-saving devices, high-pressure structural parts, and manufacture various engineering machinery.

What are the characteristics of medium and thick plate, S420NL material steel? First, the performance of shock resistance and vibration is very good, so the application of medium and thick plates in buildings and bridges can greatly improve the safety. Second, the bearing capacity of medium and thick plate, S420NL material steel is good, the performance is excellent. The bridge, the automobile girder steel plate, and buildings have strict load-bearing requirements, and it is easy to cause accidents if the steel materials not meet the requirements, so the selection of steel is more stringent.

Global S420NL material steel crude steel production in March this year increased by 2.6 percent month on month and fell by six percent year on year to 147.1 million metric tons. accordina to the World Steel Association (worldsteel).In the first quarter of this year, global S420NL material steel crude steel production decreased to 443.03 million mt, down 1.4 percent year on year.

In 2010, the 87th session of the International Maritime Organization (IMO) Maritime Committee passed the "Performance Standards for Alternative Anticorrosion Measures for Crude Oil Cargo Tanks". It is mandatory that the cargo tanks of large oil tankers above 5,000 dwt need to be protected or used The construction of corrosion-resistant steel promotes the rapid development of the research and application of corrosion-resistant steel for oil tankers in China. At present, the performance of domestic corrosion-resistant steel has reached the world's leading level and can meet the requirements of large-scale applications.

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