Steel plates with different grades are used in a variety of applications. Changes in the grain structure of steel can either increase or decrease the attributes of a specific property. For example, increasing the strength of steel requires complex metallurgy such as cold-working and precipitation hardening. Finally, there are numerous indicators that define the capabilities of a specific steel product. Continue reading to learn more about ensuring that you're using the proper steel grade.
What are the various kinds of specially graded steel plates?
- ASTM 572
- ASTM 283 GRADE
- Plates AR
The ABS steel grade is the first type of steel grade you'll come across in this article. ABS is an American Bureau of Shipping classification that indicates that a specific steel plate has been approved for use in mechanical shipbuilding endeavors. ABS-graded steel is typically produced using the hot-rolling method, which, as the name implies, involves subjecting raw steel material to additional high-temperature processes. This temperature is usually set higher than the recrystallization temperature of the steel, or the point at which the steel is reformed.
However, the hot-rolling method yields thick-walled steel plates, which are used in shipbuilding, particularly for hull components. This section is critical because it secures the cargo, passengers, and other complex machinery found within the ship's structure. ABS steel plates are ideal for hulls due to their high yield strength and ability to withstand certain impacts. This is frequently divided into four other grades, each with a different yield and tensile strength grading.
ASTM A572 steel, unlike ABS-graded steel plates, is commonly found in aircraft applications or other types of general construction. The American Society for Testing and Materials determines this type of grade. The steel grade establishes the standard for high-strength and low-alloy steels, which typically have greater corrosion resistance than carbon steel. Aside from that, it results in the production of steel with increased hardness and strength.
ASTM A283 is another grade that denotes carbon steel classification, specifically those with low-to-intermediate tensile strength. It can also come in grades such as B, C, or D. Steel plates of ASTM A283 grade c Plates can be found in general product applications. They can be used as support profiles to improve the stability and durability of a specific structure or civil work. Steel plates can be used alone in this regard, or they can be subjected to additional manufacturing processes to create columns and other types of building profiles.
Because of the various classifications, it is critical to determine whether a low-tensile or intermediate-tensile-strength steel should be used. These steel plates are typically welded or joined together with other fittings to form multiple I-section steel profiles for bridge plate girders. Because bridges are typically traversed by a variety of vehicles carrying heavy loads, it is critical that the A283 steel used is of intermediate grading. Steel plates that will only be used as part of industrial facility flooring, on the other hand, must only have a low tensile strength rating. These plates would be tough enough to withstand activities such as simple machine navigation and daily foot traffic.
As previously stated, one of the processes that can improve steel's corrosion resistance is the alloying of specific elements. AR plates are the least prone to the destructive effects of weathering of all the graded steel plates you've come across on this list. AR plates also have a higher carbon content, which allows them to be used in virtually any application that requires increased strength and hardness. High-carbon AR plates typically contain 0.6% to 1% carbon, whereas ultra-high-carbon AR plates contain 1.25% to 2% carbon. AR plates, unlike other steel plates, are not commonly used for structural applications such as bridges or buildings. Instead, they're best for high-impact applications that require steel hardness. These products can range from simple manufacturing conveyors to more specialized items such as body armor, serrated blades, or gear wheels.