ASTM A516 Gr 70 Pressure Vessel Steel Plate - Specialized Steel for Boilers, Storage Tanks, Heat Exchangers
The ASTM A516 Grade 70 steel plates we supply are the most commonly used pressure vessel steel under the American Standard (ASTM). Its core advantages are:
Excellent low-temperature toughness: It can maintain its strength at -46℃, making it suitable for northern regions or low-temperature projects.
Excellent welding performance: Low carbon content, less prone to cracking after welding, and easy to install.
High cost-effectiveness: Compared to some alloy steels, it is more affordable and can meet the needs of most conventional pressure vessels.
This type of steel plate is mainly used in industries such as liquefied gas storage tanks, boiler steam drums, petrochemical reactors, and heat exchangers.
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Why choose to purchase A516 Gr 70 steel plates from Yuxin?
High-quality materials, verifiable by evidence.
Each steel plate comes with the original factory warranty certificate from the steel mill, and the chemical composition and mechanical properties are clearly visible. We can also arrange for third-party testing by SGS or BV before shipment to conduct inspection and ensure that the goods you receive are 100% qualified.
Stock is abundant and delivery is fast
For common thicknesses (6mm - 150mm), we have a large quantity of stock in stock. Once you place an order, the goods can be dispatched within 7-15 days, which is much faster than directly ordering from the steel mill. For special sizes, we can also quickly "order the rolled piece" from the steel mill. We also accept orders for small batches.
Professional material selection advice
If you are unsure whether A516 Gr 70 is the most suitable material for your project, we can recommend the most appropriate and cost-effective material based on your working temperature, medium and pressure.
Comparison of ASME SA516 Grade 70 with Similar Steel Plates
| Feature | ASME SA516 Grade 70 | EN 10028 P355GH | GB 713 Q345R | JIS G3115 SPV355 |
|---|---|---|---|---|
| Standard / Region | ASME / ASTM (USA) | European Norm (Europe) | Chinese National Standard (China) | Japanese Industrial Standard (Japan) |
| Steel Type | Carbon steel plate for pressure vessels, primarily for moderate and lower temperature service . | Non-alloy steel for pressure purposes with specified elevated temperature properties . | Carbon steel plate for pressure equipment with specified elevated temperature properties . | Carbon steel plate for pressure vessels for intermediate and moderate temperature service . |
| Yield Strength (Min) | ≥ 260 MPa | ≥ 235 MPa (for thickness ≤ 16 mm) | ≥ 345 MPa (for thickness ≤ 16 mm) | ≥ 355 MPa |
| Tensile Strength | 485 - 620 MPa | 460 - 640 MPa | 510 - 640 MPa | 520 - 640 MPa |
| Impact Test Temperature | -46 °C . This is a key feature, emphasizing low-temperature toughness. | -20 °C . Standard impact test temperature is higher. | -20 °C . Standard impact test temperature is higher. | 0 °C . Standard impact test temperature is significantly higher. |
| Key Characteristics | - Excellent low-temperature notch toughness . - Widely used in international projects . |
- Optimized for high-temperature performance up to 500°C . - Direct European equivalent. |
- Higher yield strength than SA516 Gr70 . - Widely used in domestic Chinese petrochemical and nuclear projects . - Often seen as a close, but not exact, match to SA516Gr70 . |
- Designed for moderate temperature environments . - Suitable for applications like petroleum storage tanks and reactors . |
| Typical Applications | Low-temperature pressure vessels, oil & gas equipment, storage tanks (e.g., LNG), heat exchangers . | High-temperature boilers, chemical equipment, power station components . | Petrochemical pressure vessels, nuclear power components, steam drums . | Medium-temperature storage tanks (e.g., petroleum), reactors . |
| Heat Treatment | Typically normalized, especially for thicker plates or when impact testing is required (e.g., > 40mm) . | Normalized . | Hot-rolled or normalized, depending on thickness and performance requirements . | Hot-rolled or normalized . |
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why choose our products
Excellent Low-Temperature Toughness: A516 Grade 70 maintains toughness at -45°C, with impact energy ≥20 J, and some steel mill products can achieve ≥40 J, making it suitable for low-temperature pressure vessels.
Good Weldability: With a low carbon equivalent, it is suitable for various welding methods such as SMAW, SAW, and TIG, and the post-weld microstructure remains stable.
Cost-effective: Compared to some low-alloy steels, A516 Gr70 offers a higher cost-performance ratio.
High-temperature performance: Generally, when temperatures exceed 345°C, other materials such as Cr-Mo steel (e.g., SA387) should be selected.
Corrosion resistance: It has limited corrosion resistance and typically requires coating or the use of stainless steel composite plates to enhance corrosion resistance.
Our Certificates
who choose us?
1.Quality Assurance and Traceability
Factory Warranty: Each piece of steel plate (such as A516GR70) we provide comes with a factory warranty issued by the steel mill, ensuring that the chemical composition and mechanical properties comply with international standards such as ASME, ASTM, EN or GB.
Third-party testing: We support third-party testing institutions such as SGS and BV for pre-loading inspections, or we can accept the testing standards specified by the customers to ensure that the materials are 100% qualified.
Full-process traceability: From steelmaking, rolling to heat treatment (such as normalizing), we have complete production process records to ensure the stability and traceability of material performance.
2. Professional Material Selection and Technical Support
Precise Material Selection: Many purchasing mistakes occur because the wrong grade of material is chosen. We not only sell materials but also offer material selection advice. If you are unsure whether to use A516GR70 or P355GH, our technical team can recommend the most suitable and cost-effective material for you based on the design temperature, medium, and pressure of your equipment.
Alternative solution optimization: If a certain brand is out of stock or has an excessively high price, we can leverage our expertise to provide an alternative brand with similar performance (such as replacing the American standard A516GR70 with the European standard P355GH), and analyze the impact of the substitution to help you avoid risks.
3. Flexible Inventory and Short Delivery Period
Spot Advantage: We have ample stock in stock for commonly used specifications (such as container plates with thickness ranging from 6mm to 150mm), and can deliver within 7 to 15 days, which is significantly shorter than the direct production cycle of the steel mills.
Tension Rolling Service: For special dimensions (such as fixed width, fixed length) or special requirements (such as -50℃ low-temperature impact, flaw detection), we can leverage our close partnership with the steel mill to achieve rapid tension rolling. Even for small order quantities, we can also accept orders.
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FAQ
Q: What is the difference between ASTM A516 Grade 60 and Grade 70?
A: The main difference is their minimum yield strength. Grade 70 has a higher minimum yield strength of 260 MPa (compared to Grade 60's 220 MPa), making it suitable for higher-pressure applications. Grade 70 is the most commonly used grade for pressure vessels and boilers due to its excellent balance of strength, toughness, and weldability. We supply both grades, and our team can help you select the right one based on your design pressure and temperature.
Q: Do you provide mill test certificates (MTC) with the steel plates?
A: Yes, absolutely. Every single plate we ship comes with the original mill test certificate, which clearly shows the chemical composition, mechanical properties, and heat treatment details. We also support third-party inspections from SGS, BV, or any other agency you prefer, before loading, to give you full confidence in material quality.
Q: What is the normal delivery time for A516 Gr 70 plates?
A: For standard thicknesses (6mm to 150mm), we keep large stocks and can ship within 7 to 15 days after order confirmation. For special sizes or requirements (like custom length, width, or extra low-temperature impact testing), we can arrange "tension rolling" at the mill, which typically takes 20-30 days. We can also accept small quantity orders for special rolling.
Q: Why is "normalized" heat treatment important for A516 Gr 70 plates?
A: Normalizing is a heat treatment process that refines the grain structure of the steel, improving its uniformity and toughness. According to ASTM standards, plates thicker than 40mm are usually required to be normalized to ensure reliable impact resistance, especially for low-temperature applications. We can supply both as-rolled and normalized plates based on your project needs.
Q: Can A516 Gr 70 be used for high-temperature service?
A: A516 Gr 70 is primarily designed for moderate and low-temperature service (down to -46°C). For continuous service temperatures above 345°C, we would recommend other materials like chrome-molybdenum steel (e.g., ASTM A387). If you're unsure, just tell us your operating temperature and pressure, and our technical team will suggest the most suitable and cost-effective material for your specific case.
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