GL-D460 Steel Plate

 

 

 

 

Limitations in Terms of Strength

 

Limited Load - Bearing Capacity
Common carbon structural steels like Q235 steel have a relatively low yield strength. In building structures such as large high - rise buildings or long - span bridges that require high load - bearing capacity, they may not be able to meet the design requirements. For example, in super - high - rise buildings, as the number of floors increases, the columns at the bottom of the structure need to bear huge vertical loads. Q235 steel may cause excessive structural deformation due to insufficient strength.

 

Poor Strength Stability
Under the action of long - term sustained loads, the strength of common carbon structural steels will gradually decrease. Taking a warehouse building as an example, when the warehouse is in a fully loaded state for a long time and the beams and columns made of Q235 steel bear loads close to their ultimate load - bearing capacity, the crystal structure inside the steel will change, and defects such as dislocations will accumulate continuously, reducing the strength and toughness of the steel and increasing the risk of structural failure.

 

Limitations in Corrosion Resistance

 

Susceptible to Corrosive Environments
Common carbon structural steels are prone to corrosion in humid environments with corrosive gases (such as sulfur dioxide in industrial waste gas, salt fog by the sea, etc.). For example, in buildings in coastal areas, when common carbon structural steels do not have appropriate anti - corrosion measures, salt fog will erode the steel surface, forming rust. Over time, the rust will continuously expand and penetrate into the interior of the steel, reducing the cross - sectional area of the steel and its load - bearing capacity.

 

High Cost and Limited Effectiveness of Anti - corrosion Measures
To prevent the corrosion of common carbon structural steels, anti - corrosion measures such as painting and galvanizing are usually required. However, these anti - corrosion measures need to be regularly maintained and updated. For example, the paint layer on the surface of painted steel may peel off due to sun exposure, rain, physical wear, etc., and needs to be repainted. Moreover, even with anti - corrosion measures, the corrosion of steel may still occur in harsh corrosive environments, although the speed is somewhat slowed down.

 

Limitations in Welding Performance

 

Difficulty in Ensuring Welding Quality
During the welding process of common carbon structural steels, welding defects are likely to occur if the welding process is improper. For example, when welding Q235 steel, if parameters such as welding current, voltage, or welding speed are not appropriate, defects such as pores, slag inclusions, and incomplete fusion may occur. These defects will become stress concentration points. When the building structure bears loads, the stress will concentrate at these defects, reducing the strength of the welded joint and affecting the overall performance of the structure.

 

 

 

 

 

Grade	Mechanical Property			Charpy V Impact Test
	Yield Min Mpa	Tensile Mpa	Elongation Min %	Degree	Energy 1 (J)	Energy 2(J)
D460	420	530-680	18%	-20	28	42

 

 

 

 

Limitations in Fatigue Performance

 

Prone to Fatigue Cracks
In building structures that bear alternating loads (such as the repeated driving of vehicles on bridges, the frequent lifting of cranes in industrial plants, etc.), common carbon structural steels are prone to fatigue cracks. Due to their relatively low fatigue limit, after a certain number of alternating load applications, the microscopic structure inside the steel will be damaged, and fatigue cracks will gradually form and expand. For example, on a busy highway bridge, the steel beams made of Q235 steel may develop fatigue cracks after several years of use under the repeated loading of vehicles.

 

Complex Anti - fatigue Measures
To improve the fatigue performance of common carbon structural steels, some complex measures such as surface strengthening treatments (shot peening, rolling, etc.) are required. These measures not only increase the construction cost and time but also have limited effectiveness. Under some high - intensity alternating load applications, even with anti - fatigue measures, common carbon structural steels may still not be able to meet the long - term use requirements of the structure.

 

 

 

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-D460 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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