Product Overview
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Reliable Safety Armor for Medium & Low-Temperature Pressure Vessels
A516 Gr.70 (also known as ASME SA516 Gr.70) is a carbon steel plate specifically designed for pressure vessels operating in medium and low-temperature environments. It is widely used in:
- Petrochemical reactors and storage tanks
- LNG storage and transportation equipment
- Gas holders and heat exchangers
- Industrial boilers
Why do engineers trust A516 Gr.70? Because it delivers three critical guarantees for your pressure vessel project:
| Key Property | What It Means for Your Project |
| High tensile strength (485-620 MPa) | Sufficient safety margin under design pressure. Even during unexpected short-term pressure spikes, the material provides a buffer against catastrophic rupture. |
| Excellent low-temperature toughness (27J @ -30°C) | Reduces the risk of brittle fracture when equipment operates in cold regions (Northern Europe, Canada, Russia) or handles low-temperature media (LNG, liquid ammonia). |
| Good weldability (CE ≤ 0.43, typical 0.3) | Less preheating required, fewer weld cracks, lower rework costs. Your workshop gets a smoother fabrication process. |
From LNG module projects in Southeast Asia to petrochemical plant expansions in the Middle East, we have helped clients navigate material selection, certification review, emergency replenishment, and custom size cutting.
What you get when you order from us:
Clear traceability from steel mill to shipping port
Mill test certificates (EN 10204 Type 3.1 or 3.2 with third-party witness)
Technical team that understands ASME code requirements
Product Parameter
Special Parameter Analysis
Strength (tensile strength & yield strength)
470MPa-630MPa
Low-temperature toughness
-30℃
Weldability (Carbon Equivalent Control)
0.3
Strength (tensile strength & yield strength)
The tensile strength is akin to the "maximum load-bearing capacity" of a steel plate. It ensures that your pressure vessel has sufficient safety margin under the design pressure. Even if it encounters an unexpected short-term pressure peak, there is a buffer space to prevent catastrophic rupture.
The yield strength is more akin to a "normal operating threshold". The balanced strength design of A516GR70 enables it to maintain sufficient load-bearing capacity while being more suitable for cold bending and sheet rolling forming. This can effectively reduce the processing difficulty and material waste during the manufacturing of cylinders and heads, making the work in the processing workshop more smooth.
Low-temperature toughness
For equipment used in cold regions (such as Northern Europe, Canada, Russia) or in low-temperature media (such as LNG, liquid ammonia), the toughness of the material is of utmost importance. The excellent low-temperature impact value of A516GR70 is like injecting a "anti-freeze vaccine" into your equipment.
It can significantly reduce the risk of instantaneous brittle fracture of the equipment due to stress concentration when operating at low temperatures, which is a core indicator related to safety. Selecting materials with adequate toughness is one of the most important technical bases for you to pass the strict safety review and obtain the operation permit.
Weldability (Carbon Equivalent Control)
Excellent welding performance means:
Less prone to cracking: Significantly reduces the probability of cold cracks or hot cracks occurring in the heat-affected zone of the weld seam, thereby minimizing the costs of expensive rework and inspection.
More friendly to welding processes: It allows for a wider range of welding parameters, and the preheating requirements before welding may be lower, thus simplifying the process and shortening the manufacturing cycle.
Weld quality is more stable: It is easier to obtain welds that are dense, have good strength and toughness compatibility, ensuring the overall integrity and long-term reliability of the equipment.
Why Choose Our A516 Gr.70 Plate?
why choose our products
1. Ready Stock for Common Sizes
2,000+ tons monthly inventory covering 6mm to 150mm thickness
Common sizes (6mm, 8mm, 10mm, 12mm, 16mm, 20mm, up to 150mm) ready for 3-5 working days shipment
2. Customized Rolling for Non-Standard Sizes
Need thickness beyond stock range? Custom rolling lead time: 20-30 days
Width up to 4050mm, length up to 15000mm
Plasma/flame cutting service for rectangular blanks, circles, or custom shapes per your drawing
3. Full Certification & Inspection Support
Standard: EN 10204 Type 3.1 (mill certificate)
Upon request: EN 10204 Type 3.2 with third-party witness (SGS, BV, LR) – add 5-7 working days
NACE MR0175 available for sour service environments
Third-party inspection accepted at any stage
4. Technical Response You Can Rely On
1 hour reply for technical consultation
4 hours for a formal quotation with spec confirmation
Certification & Quality Assurance
All supplied A516 Gr.70 plates strictly comply with ASME SA516/SA516M and ASTM A516 standards.
What we provide with every order:
Traceable original mill test certificate (MTC)
Heat number stamped on each plate
Support for customer-appointed third-party inspection (SGS, BV, LR, etc.)
FAQ
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