ASTM A515 Grade 70,A515 Gr.70,A515GR70 STEEL PLATE

ASTM A515 Grade 70 pressure vessel steel plates Steel Plate supplier

Gangsteel is a leading supplier of high-quality pressure vessel steel plates, specializing in ASTM A515GR70 steel plates. Designed for intermediate and higher-temperature service, ASTM A515 GR.70 is a carbon steel plate widely used in pressure vessel manufacturing due to its excellent strength, durability, and weldability.

Gangsteel provides an in-depth look at the chemical composition, mechanical properties, and applications of ASTM A515GR.70, along with comparisons to related grades such as ASTM A515 Grade 60, ASTM A515 Grade 65, and ASTM A516 Grade 70 to help you make informed decisions for your projects.

What is ASTM A515 Grade 70 Steel Plate?

A515 70 is a carbon steel plate specified under the ASTM A515 standard for pressure vessel plates, designed for intermediate and higher-temperature service. These plates are normalized to enhance their mechanical properties, making them ideal for applications such as boilers, heat exchangers, and other pressure vessels operating under elevated temperatures. Gangsteel ensures that our ASTM A515GR70 steel plates meet stringent quality standards, offering thicknesses from 6mm to 300mm, widths from 1500mm to 4050mm, and lengths from 3000mm to 15000mm.

Chemical Composition of ASTM A515 Grade 70

Gangsteel provides an in-depth look at the chemical composition of ASTM A515 GR.70, which is critical to its performance in high-temperature environments. Below are the maximum allowable percentages for key elements, based on both product analysis and ladle (melting) analysis, ensuring compliance with ASTM standards.

Chemical Composition (Product and Ladle Analysis)

Carbon Equivalent (Ceq):
The carbon equivalent is calculated using the formula:
Ceq = [C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15]%.
This ensures the weldability and suitability of ASTM A515GR.70 for pressure vessel applications.

Mechanical Properties of ASTM A515 Grade 70

A515 70 offers superior mechanical properties, making it a preferred choice for demanding applications. The following table outlines its key mechanical characteristics:

These properties ensure that ASTM A515GR70 steel plates can withstand high-pressure conditions while maintaining structural integrity.

Applications of ASTM A515 Grade 70 Steel Plate

ASTM A515 GR.70 is widely used in industries requiring robust materials for high-temperature and high-pressure environments. Common applications include:

• Boilers and Pressure Vessels: Ideal for fabricating boilers and pressure vessels due to its high tensile strength and heat resistance.
• Heat Exchangers: Used in heat exchangers for efficient heat transfer under elevated temperatures.
• Power Generation: Employed in power plants for components exposed to high temperatures.
• Petrochemical Industry: Suitable for storage tanks and processing equipment in petrochemical plants.

Gangsteel’s ASTM A515GR.70 steel plates are tested for supplementary requirements such as HIC (Hydrogen Induced Cracking) and NACE MR0175, ensuring reliability in harsh environments.

Comparison with Other ASTM A515 Grades

To help you choose the right material, we compare A515 70 with other grades in the ASTM A515 family:

• ASTM A515 Grade 60: Offers lower strength but higher ductility, suitable for less demanding applications.
• ASTM A515 Grade 65: A middle ground with balanced strength and ductility, ideal for moderate-temperature services.
• ASTM A515GR70: Provides the highest strength, making it perfect for high-pressure and high-temperature environments.

Comparison with ASTM A516 Grades

For a broader perspective, we compare ASTM A515 GR.70 with ASTM A516 grades, which are designed for moderate and lower-temperature services:

• ASTM A516 Grade 55: Best for low-temperature applications with high ductility.
• ASTM A516 Grade 60: Similar to A515 Grade 60 but optimized for lower temperatures.
• ASTM A516 Grade 65: Offers a balance of strength and toughness for moderate conditions.
• ASTM A516 Grade 70: Matches A515 70 in strength but is designed for lower-temperature service.

For high-temperature applications, ASTM A515GR70 outperforms A516 grades due to its normalized structure and enhanced heat resistance.

Equivalent Steel Grades for ASTM A515 Grade 70

ASTM A515 GR.70 has equivalent grades in various international standards, ensuring compatibility for global projects:

These equivalents allow flexibility in sourcing materials while maintaining performance standards.

Frequently Asked Questions (FAQs) About ASTM A515 Grade 70

What is the difference between ASTM A515 Grade 70 and ASTM A516 Grade 70?

ASTM A515GR70 is designed for intermediate and higher-temperature service, while ASTM A516 Grade 70 is optimized for moderate and lower-temperature applications. A515 Grade 70 has a normalized structure for enhanced heat resistance, whereas A516 Grade 70 offers better toughness in colder environments.

What are the typical applications for ASTM A515 Grade 70?

A515 70 is commonly used in boilers, pressure vessels, heat exchangers, and petrochemical equipment due to its high strength and ability to withstand elevated temperatures.

Is ASTM A515 Grade 70 suitable for welding?

Yes, ASTM A515 GR.70 has excellent weldability, thanks to its controlled carbon equivalent (Ceq). Proper welding procedures should be followed to maintain its properties.

What are the available sizes for ASTM A515 Grade 70 plates?

Gangsteel offers ASTM A515GR70 plates in thicknesses from 6mm to 300mm, widths from 1500mm to 4050mm, and lengths from 3000mm to 15000mm, customizable to project requirements.

Does ASTM A515 Grade 70 meet NACE MR0175 standards?

Yes, Gangsteel’s ASTM A515GR.70 plates are tested for NACE MR0175 and HIC, ensuring suitability for sour service environments.

Why Choose Gangsteel for ASTM A515 Grade 70 Steel Plates?

Gangsteel is a trusted supplier of ASTM A515GR.70 steel plates, offering:

• Quality Assurance: All plates undergo rigorous testing, including HIC, NACE MR0175, and Z15/Z25/Z35 tests.
• Custom Sizes: Available in thicknesses from 6mm to 300mm, widths from 1500mm to 4050mm, and lengths from 3000mm to 15000mm.
• Global Reach: We supply to industries worldwide, ensuring timely delivery and competitive pricing.
• Comprehensive Support: Our team provides technical guidance to meet your project specifications.

For more details on our ASTM A515 product range or to inquire about stock availability, contact Gangsteel today.

Conclusion

ASTM A515GR70 steel plates are the go-to choice for high-temperature pressure vessel applications, offering superior strength, weldability, and durability. By comparing it with ASTM A515 Grade 60, ASTM A515 Grade 65, and ASTM A516 grades, you can see its unique advantages for demanding environments. Trust Gangsteel to deliver high-quality A515 70 steel plates tailored to your needs.

For more information or to place an order, visit our pressure vessel steel plate page or contact our team.