GL-E620 Steel Plate

 

Chemical Composition

 

Addition of Alloy Elements: Adding alloy elements to materials is an important method to change their strength. For example, elements such as chromium (Cr), nickel (Ni), and molybdenum (Mo) are added to steel. Chromium can increase the hardness and wear resistance of steel, and at the same time enhance its antioxidant property. Nickel can improve the toughness and corrosion resistance of steel, and can prevent the steel from embrittlement in a low-temperature environment. Molybdenum can refine the grains and increase the strength of steel through the grain boundary strengthening mechanism. Taking stainless steel as an example, it contains a large amount of chromium and nickel. This alloy combination makes stainless steel not only have good corrosion resistance but also possess relatively high strength, enabling it to withstand certain mechanical loads.

 

Influence of Impurity Elements: Impurity elements in materials also have a significant impact on strength. For example, in metallic materials, impurity elements such as oxygen and sulfur will reduce the strength of the material. Sulfur will combine with iron in steel to form ferrous sulfide (FeS). The melting point of ferrous sulfide is relatively low. During the hot working process, it will form a eutectic with a low melting point and melt at the grain boundaries, resulting in the hot shortness phenomenon of the steel during hot working, which greatly reduces the strength and processing performance of the material. In some semiconductor materials, the content and types of impurity elements will change their electrical properties, and then indirectly affect the strength-related properties of the material in certain specific application scenarios.

 

 

 

 

 

 

 

 

 

Grade	Mechanical Property
	Tensile Strength(MPa)	Yield Strength(MPa)	% Elongation in 2 in.(50mm) min	Impacting Test Temperature(°C)
GL-E620	400-520	235	22	20

 

 

Microstructural Defects

 

Vacancies and Interstitial Atoms: Vacancies refer to the absence of atoms in the crystal structure, and interstitial atoms are those located in the interstitial positions of the lattice. Their existence will cause local lattice distortion. Vacancies and interstitial atoms will increase the resistance to the movement of dislocations, thus affecting the strength of the material. For example, in a metal crystal, the lattice around the interstitial atoms will be stretched. When dislocations move to these areas, they need to overcome greater resistance, which increases the yield strength of the material. However, if there are too many vacancies and interstitial atoms, it may lead to a decrease in the toughness of the material because they will become sources of cracks, making the material more prone to cracking when subjected to force.

 

Dislocation Density: Besides the influence of dislocation piling up at grain boundaries on strength, the dislocation density inside the material is also a key factor. The higher the dislocation density, the stronger the interaction between dislocations. When dislocations intersect with each other, complex dislocation structures such as jogs will be formed, and these structures will hinder the further movement of dislocations, thereby increasing the strength of the material. For example, through cold working deformation, the dislocation density of metallic materials can be significantly increased. For example, when copper is cold-rolled, the dislocation density can increase from the original relatively low level by several times or even dozens of times, significantly increasing the strength of copper, but at the same time reducing its toughness.

 

 

 

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 GL-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.

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