ASME SA516 Gr.70 Pressure Vessel Steel Plate – Full Specs & Stock
1. Mechanical Properties
- A516 Gr.70 steel plate offers a tensile strength of 70 ksi (approximately 483 MPa) and a yield strength typically above 38 ksi (approximately 262 MPa), allowing it to withstand high-pressure loads during the operation of pressure vessels. The plate maintains excellent impact toughness even in low-temperature environments, effectively preventing brittle fracture caused by sudden temperature fluctuations.
- Its chemical composition complies with relevant standards, with strict control over harmful elements, ensuring reliable performance under long-term high-pressure conditions and reducing the risk of failure due to localized stress concentration.
2. Weldability
- With a carbon content ≤ 0.30% and low levels of harmful elements such as sulfur and phosphorus, the steel plate exhibits low welding sensitivity. This minimizes the risk of defects such as cracks and porosity during welding.
- The welded joints offer strength comparable to the base material, eliminating the need for complex preheating or post-weld heat treatment processes, thereby simplifying the manufacturing process of pressure vessels.
3. Temperature and Corrosion Resistance
- A516 Gr.70 steel plate operates reliably within a temperature range of -40°C to 370°C, making it suitable for both low-temperature storage equipment and medium to high-temperature reaction vessels.
- It provides good corrosion resistance against common industrial media such as water, steam, and neutral gases.
4. Strict Manufacturing and Testing Standards
- Manufactured in accordance with ASME SA-516/SA-516M standards, each steel plate undergoes multiple inspections, including ultrasonic testing (UT), mechanical property tests (tensile and impact tests), and chemical composition analysis, ensuring consistent quality across every batch.
- The steel plates are available in a wide range of thicknesses to accommodate different design requirements for pressure vessels, supporting both integral forming and sectional assembly of large equipment.
5. Cost-Effectiveness and Practicality
- As a low-carbon manganese steel, A516 Gr.70 offers lower costs compared to alloy steel plates while maintaining excellent processability. It can be easily cut, bent, and stamped to produce complex pressure vessel components, reducing manufacturing difficulty and overall production costs.
- The steel plate provides long-term stability and, with proper maintenance, offers a service life of several decades.
What is SA516 Gr.70?
Product Picture
Product drawing
Basic feature
Technical Specifications of SA516 Gr.70
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SA516 Gr.70 vs. SA516 Gr.60 vs. Ordinary Carbon Steel (e.g., Q235B)
Compared to SA516 Gr.60, SA516 Gr.70 offers higher tensile strength (70 ksi vs. 60 ksi) and better yield strength, making it the preferred choice for pressure vessels operating under higher pressures or wider temperature ranges (-40°C to 370°C).
When compared to ordinary carbon steel like Q235B, SA516 Gr.70 provides significantly better impact toughness at low temperatures, stricter control of harmful elements (P/S ≤ 0.035%), and superior weldability due to lower carbon equivalent (CE). While Q235B is suitable for general structural use, it does not meet ASME code requirements for pressure-retaining applications and carries a higher risk of brittle fracture under cyclic pressure or low-temperature conditions.
Bottom line: For certified, safe, and long-lasting pressure vessel manufacturing, SA516 Gr.70 delivers a better balance of strength, weldability, and code compliance than lower-grade or non-ASME materials.
Typical Applications of SA516 Gr.70 Pressure Vessel Plates
SA516 Gr.70 is widely used in the fabrication of
LPG/propane storage tanks
Operating at low to medium temperatures.
01
Heat exchanger shells
Requiring reliable performance up to 370°C.
02
Petrochemical reactors
Where pressure cycling and corrosion resistance are critical.
03
Oil/gas separators
In upstream and midstream facilities.
04
Boiler drums
For moderate-temperature, high-pressure steam service.
05
Manufacturing Standards & Certification
Our SA516 Gr.70 pressure vessel plates are manufactured and tested in strict accordance with
ASME Boiler and Pressure Vessel Code, Section II, Part A – ensuring full compliance with international pressure equipment regulations.
ASME A516/A516M – the recognized standard for carbon steel plates for moderate- and lower-temperature service.
Available Certifications (upon request):
EN 10204 Type 3.1 – inspection certificate issued by the manufacturer, verified by an independent authorized representative.
EN 10204 Type 3.2 – inspection certificate issued by a third-party inspection body (e.g., TÜV, BV, SGS, DNV), required for many international projects and insurance purposes.
Each plate lot is accompanied by Mill Test Reports (MTRs) including:
Chemical composition (C, Mn, P, S, Si)
Tensile properties (yield, tensile strength, elongation)
Impact test results (typically at -40°C, upon request)
Ultrasonic testing (UT) according to A435 or A578.
Need a specific certification for your project? Contact us with your requirements.
Ahmed R., Abu Dhabi
Somsak C., Bangkok
Carlos M., Bogotá
why choose us
Why Choose Yuxin SA516 Gr.70 Pressure Vessel Plates?
ASME & EN 10204 Compliance – Fully certified to ASME SA516/SA516M with EN 10204 Type 3.1 or 3.2 reports available.
Stock & Fast Delivery – Wide thickness range (6mm–200mm) in stock. Custom cutting ready in 3–5 days.
Proven Quality – 100% ultrasonic testing (UT) and mechanical property verification per batch.
Technical Support – Free pre-sales consulting on material selection, welding procedures, and certification requirements.
📄 EN 10204 3.2 | 🔧 Custom Cutting | 🚢 Fast Delivery | 📞 24/7 Support
FAQ
01.What is the difference between SA516 Gr.70 and SA516 Gr.60?
02.Can you provide EN 10204 Type 3.2 certification?
03.What thicknesses and sizes do you have in stock?
04.Is SA516 Gr.70 suitable for low-temperature service?
05.What is your typical lead time and payment terms?
Lead time: 7–15 days for stock sizes; 20–30 days for large or non-standard orders.
Payment terms: T/T (30% deposit, 70% before shipment) or irrevocable L/C at sight.
Shipping: We can arrange FOB, CIF, or CFR to major ports worldwide. Express delivery for urgent sample orders is also available.
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