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

ASTM A387 Grade 5 is a 0.5Cr-0.5Mo low-alloy steel plate engineered for moderate-to-high temperature (up to 538°C/1000°F) and pressure applications. Ideal for petrochemical processing, power generation, and industrial equipment like tube shell heat exchangers, pressure vessels, and process piping, this material balances performance, cost-effectiveness, and corrosion resistance.

Selecting the right ASTM A387 Grade 5 plate requires aligning its properties with your application's operating conditions, compliance needs, and fabrication requirements.

As a leading supplier of ASTM/ASME-certified steel plates and custom tube shell heat exchangers, GNEE provides a practical, industry-focused guide to help you make informed decisions-ensuring reliability, safety, and cost-efficiency for your project.

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.

Chemical Composition and Mechanical Property

GNEE's ASTM A387 Grade 5 Solutions: Tailored to Your Needs

At GNEE, we don't just supply steel plates-we partner with you to select and deliver the perfect ASTM A387 Grade 5 solution for your application. Our offerings include:

Certified Plates: ASTM/ASME-compliant Class 1/2 plates with traceable MTRs and optional NACE MR0175 certification.

Custom Fabrication: Cut-to-size plates, bending, and welding for tube shell heat exchangers, pressure vessels, and piping.

Technical Support: Free engineering consultation to confirm Class, thickness, and testing requirements.

Fast Delivery: 3–7 days for in-stock items; 2–4 weeks for custom orders (global shipping included).

Application-Specific Kits: Complete solutions for tube shell heat exchangers (plates + tube sheets + baffles) optimized for petrochemical and power projects.

Conclusion

Selecting the right ASTM A387 Grade 5 plate requires four core steps: defining operating conditions, choosing Class 1/2, selecting size/thickness, verifying certification, and partnering with a trusted supplier. By aligning the material's properties with your application's needs, you ensure safety, reduce downtime, and optimize cost-whether for a tube shell heat exchanger, pressure vessel, or process piping.

For personalized guidance-whether you're unsure about Class selection, need custom testing, or want a quote for ASTM A387 Grade 5 plates-contact GNEE today. Our team of experts will help you navigate the selection process and deliver high-quality, compliant plates tailored to your industrial project.

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Get in touch with GNEE now to discuss your ASTM A387 Grade 5 requirements and secure the perfect material for your application!

What is a 387 gr 11 equivalent material?

Sa 387 Gr 11 Equivalent Material is the ASME SA387 in the US markets with the European Union having modules in 13CrMoSi5-5 grade. The Sa 387 Gr 11 Cl 2 Equivalent Material is the SA387-11-2 of the ASME and ASTM standard.

What is SA 387 11 CL2 material?

ASME SA387 Grade 11 Class 2 (ASTM A387 Grade 11 CL2) is a specification for chromium-molybdenum alloy steel plates intended for use in elevated temperature applications, commonly associated with pressure vessels and heat exchangers.

What temperature is SA 387 GR 11?

In the lower end of the temperature range SA 387 Gr 11 (1150 °F min tempering temperature) , and SA 387 Gr 22 (1250 °F min tempering temperature) are used. These grades can be specified in either class 1 or 2 and can also be provided in the Normalized & Tempered or Quenched and Tempered.

GNEE Steel also supplies a variety of boilers and pressure vessel steel plates, such as A204 Grade B,A515 Grade 70,A537 Class 1,SA387 Grade 11 Class 1,P265GH,S537 Class 2,P355Q,P275N,P355N,P690Q,Q345R, etc. If you want to know more about other types of steel plates, you can call the consultation hotline at +8615824687445 or send an email to alloy@gneesteelgroup.com. You are welcome to consult us, and we are very willing to answer your questions.