ABS Marine Steel Plate GradeDH32
Products Description Chromium has the following important impacts on the performance of ABS Marine Steel Plate (shipbuilding steel plate certified by American Bureau of Shipping): I. Improving corrosion resistance Antioxidation effect In the marine environment, shipbuilding steel plates are...
Description
Products Description
Chromium has the following important impacts on the performance of ABS Marine Steel Plate (shipbuilding steel plate certified by American Bureau of Shipping):
I. Improving corrosion resistance
Antioxidation effect
In the marine environment, shipbuilding steel plates are exposed to humid air and seawater for a long time and are prone to oxidation reactions. Chromium can combine with oxygen to form a dense chromium oxide protective film on the surface of the steel plate, preventing oxygen from further invading the interior of the steel, thereby effectively slowing down the oxidation rate of the steel.
This antioxidant property is crucial for prolonging the service life of shipbuilding steel plates. Especially under high-temperature and high-humidity marine climatic conditions, it can significantly reduce the strength reduction and structural damage of the steel plate caused by oxidation.
Resistance to corrosive media erosion
The ocean contains a large amount of salt and other corrosive substances such as chloride ions. Chromium can improve the resistance of steel plates to these corrosive media.
It can react with corrosive ions to form stable compounds and reduce the erosion effect of corrosive ions on steel. For example, chromium combines with chloride ions to form insoluble chromium chloride, reducing the adsorption and penetration of chloride ions on the steel surface and thus protecting the steel from corrosion.
II. Enhancing strength and hardness
Solid solution strengthening
Chromium can dissolve in the ferrite of steel to form a solid solution, thereby improving the strength and hardness of steel.
When chromium atoms are incorporated into the ferrite lattice, they will cause lattice distortion and increase the resistance to dislocation movement. As a result, the steel requires greater external force to produce plastic deformation when under stress, thereby increasing the strength of the steel.
Precipitation strengthening
Under appropriate heat treatment conditions, chromium can form fine carbide or nitride precipitation phases with other alloying elements, further improving the strength and hardness of steel.
These precipitation phases are evenly distributed in the matrix of steel and can hinder the movement of dislocations and enhance the deformation resistance of steel. For example, the chromium carbide precipitation phase formed by chromium and carbon has high hardness and stability and can significantly improve the strength of shipbuilding steel plates.
III. Improving high-temperature performance
Increasing high-temperature strength
Shipbuilding steel plates used in high-temperature components such as ship engines and boilers need to have good high-temperature strength. Chromium can improve the strength and stability of steel at high temperatures.
As the temperature rises, chromium can stabilize the microstructure of steel and prevent grain growth and softening, thereby maintaining a relatively high strength. For example, at high temperatures, chromium can form stable alloy phases with iron, improving the high-temperature strength and oxidation resistance of steel.
Resisting high-temperature creep performance
Shipbuilding steel plates are prone to creep deformation under long-term high-temperature and stress conditions, that is, the material slowly undergoes plastic deformation over time under constant stress. Chromium can improve the high-temperature creep resistance of steel.
It can hinder the climb and diffusion of dislocations and reduce the plastic deformation during creep, thereby improving the high-temperature creep resistance of steel. For example, shipbuilding steel plates containing an appropriate amount of chromium can maintain good structural stability in high-temperature and high-pressure marine environments and reduce the risk of failure due to creep.
| Grade | Chemical compostion % | |||||
| C | Si | Mn | P | S | Als | |
| AH32 | ≤0.18 | ≤0.50 | 0.9-1.6 | ≤0.035 | ≤0.035 | ≥0.015 |
| DH32 | ≤0.18 | ≤0.50 | 0.9-1.6 | ≤0.035 | ≤0.035 | ≥0.015 |
| EH32 | ≤0.18 | ≤0.50 | 0.9-1.6 | ≤0.035 | ≤0.035 | ≥0.015 |
| FH32 | ≤0.18 | ≤0.50 | 0.9-1.6 | ≤0.035 | ≤0.035 | ≥0.015 |
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 ABS Marine Steel Plate GradeDH32, 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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