NV E620 Steel Plate

 

 

 

 

 

 

 

 

Effect on Corrosion Resistance

 

Phosphorus segregation will have an adverse effect on the corrosion resistance of the heat - affected zone of NV E620 welding. In a corrosive environment, the chemical composition of the segregation area is different from that of the surrounding matrix, forming a local micro - battery. The phosphorus - segregation area acts as an anode and is more prone to oxidation reactions, thus accelerating the corrosion process.

 

For example, in a humid environment containing chloride ions, the metal atoms in the phosphorus - segregation area are more likely to lose electrons and be oxidized into metal ions that enter the solution, while reduction reactions occur in the surrounding cathode area. This local electrochemical corrosion will lead to pitting corrosion, intergranular corrosion, and other corrosion forms in the heat - affected zone of welding, reducing the service life and reliability of the material.

 

 

 

 

 

 

 

 

 

Grade	The Element Max (%)
	C	Si	Mn	P	S	Al	N
NV E620	0.20	0.10-0.55	1.7	0.030	0.030	0.015-0.08	0.020
	Nb	V	Ti	Cu	B	Ni	Mo
	0.02-0.05	0.04-0.10	0.02		0.005

 

 

 

Effect on Fatigue Performance

 

Phosphorus segregation in the heat - affected zone of NV E620 welding will reduce the material's fatigue performance. Under alternating loads, the phosphorus - segregation area, due to its higher hardness and the presence of brittle phases, is prone to crack formation. These cracks will continuously expand under the repeated action of alternating stresses.

 

From the perspective of fatigue - crack propagation, the microscopic - structure defects in the phosphorus - segregation area provide a more favorable path for crack propagation. Compared with the non - segregation area, the stress - concentration coefficient in the segregation area is higher, making it easier for fatigue cracks to initiate and expand in these areas, and ultimately leading to fatigue failure of the material at a stress level lower than the normal fatigue strength.

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our NV E620 Steel Plate, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

Hot Tags: nv e620 steel plate, China nv e620 steel plate suppliers, factory, 304 Stainless Steel, C3712, C1220, CuAl10Ni5Fe4, 7050aluminum, 2 4817