How to Select the Right ASTM A387 Grade 5 Plate for Your Application

Are you seeking the best alloy steel plate option to bring your engineering project or manufacturing plan to life? If so, the ASTM A387 Grade 5 Plate could be your perfect solution! With superior corrosion resistance and strength, this product is an ideal choice for various applications. This blog post will examine what makes Gr. 5 plates unique and how to use them in your next project or business venture. Read on to discover why selecting the right ASTM A387 Grade 5 Plate is crucial for long-lasting results worth investing in!

What is ASTM A387 Grade 5 Plate?

ASTM A387 Grade 5 Plate is a chromium molybdenum alloy steel plate intended primarily for welded boiler and pressure vessels designed for elevated temperature service. The Cr content is 5.00%, and the Mo content is 0.5%. It also includes other alloys, such as manganese, which increase strength and hardness even in low temperatures. Physical properties of RHS Pipes include tensile strength range from 485-620 MPa, yield point at 215 min MPa, elongation 25%, with impact absorption energy 27 J at room temperature, and Brinell Hardness range 161-231 HBW. ASTM A387 Grade 5 Plate is suitable for applications handling high-temperature material like citric acid solutions or anhydrous sulfuric acid solutions in concentrations up to 85 per cent at temperatures up to 650°F (343°C).

How to Choose ASTM A387 Grade 5 Plate

Determine the Required Chemical Composition

The chemical composition of an ASTM A387 Grade 5 plate determines its properties and suitability for specific applications. The primary elements in ASTM A387 Grade 5 plates are chromium, molybdenum, and carbon. However, each application has its unique requirements for the chemical composition. For instance, an application that requires high-temperature resistance may require a higher percentage of chromium and molybdenum than an application that demands good corrosion resistance. It is crucial to consult with your steel supplier to ensure that the plate meets the required chemical composition.

Analyze the Required Mechanical Properties

The mechanical properties of ASTM A387 Grade 5 plates, such as tensile strength, yield strength, and elongation, determine the plate’s durability and resistance to deformation. The required mechanical properties vary from one application to another. Applications that require high strength demand a plate with high tensile strength and yield strength. On the other hand, applications that involve significant deformation require plates with high elongation. Your supplier can provide you with relevant data sheets to help you compare and analyze plate properties.

Consider the Plate’s Thickness

The thickness of the ASTM A387 Grade 5 plate is another critical factor to consider when selecting a plate for your application. The pressure the vessel will experience determines the required plate thickness. Thick plates have higher resistance to deformation and are often used in high-pressure applications. However, thick plates are more challenging to form and weld and require more fabricating time. Ensure that you select a plate of the right thickness to avoid compromising the performance and safety of your project.

Check the Plate’s Fabrication Requirements

Different industrial projects require ASA387 Grade 5 plates with varying fabrication requirements, such as welding, forming, and machining. When selecting a plate, consider your project’s fabrication requirements. If your application requires welding, choose a plate with high weldability and low susceptibility to cracking during welding.

Consult with a Trusted Steel Supplier

Selecting the right ASTM A387 Grade 5 plate for your industrial project can be challenging. However, working with a reliable steel supplier can make the process more manageable. A trusted steel supplier can provide technical support, helpful information, and data sheets to help you make informed decisions. Ensure you choose a reliable supplier with a proven track record of delivering high-quality products that meet your requirements.


Selecting the right ASTM A387 Grade 5 plate is critical to ensuring your industrial projects’ safety, reliability, and longevity. The factors to consider when selecting a plate include the required chemical composition, mechanical properties, thickness, fabrication requirements, and consulting with a trusted steel supplier. By considering these considerations, you can select a plate that meets your unique industrial requirements and project specifications—partner with an experienced and reputable supplier to ensure that you receive high-quality plates that meet your expectations.