Products Description
A516 Grade 70 is a carbon steel plate for pressure vessels specified in the American Society for Testing and Materials (ASTM) standards, categorized for medium-to-low temperature pressure vessels.
- Material: A516 Grade 70 is a low-alloy high-strength steel plate offering excellent impact resistance, fatigue resistance, and corrosion resistance.
- Compliance: Meets ASTM A516/A516M standards.
- Chemical Composition: Primarily contains carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), and other elements.
- Physical Properties: Features moderate density, thermal conductivity, and linear expansion coefficient, suitable for operating environments across various temperature conditions.
Yuxin Company consistently provides steel materials of various grades and specifications, such as Z-directional steel, pipeline steel, bridge plates, shipbuilding plates, high-strength medium-thick plates, boiler and pressure vessel plates, low-alloy medium-thick plates, and ordinary carbon medium-thick plates. If you would like to learn more about our products or are interested in purchasing them, please contact us! info@chinasteelcompany.com
Our Products
Product Performance
1. Mechanical Properties
This is the core advantage.
- Strength meets standards: Yield strength ≥380MPa, tensile strength 485-620MPa, capable of withstanding internal media pressure within equipment to prevent deformation or rupture.
- Superior Low-Temperature Toughness: Transverse Charpy V-notch impact energy ≥34J at -30°C, preventing brittle fracture in cryogenic conditions-a performance standard unattainable by ordinary carbon steel.
- Excellent Ductility: Elongation ≥20% (for thickness ≤25mm), facilitating fabrication into complex pressure components like storage tanks and reactors via rolling, stamping, and other processes.
2. Process Performance
Welding, Forming, and Other Processing Steps
- Excellent weldability: Minimal hardening in the heat-affected zone during welding reduces crack risk, compatible with manual and submerged arc welding.
- Reliable formability: Meets cold-forming requirements for pressure vessel heads, bent pipes, and similar components.
- Strong Heat Treatment Adaptability: Supplied in hot-rolled condition by default; grain refinement can be achieved through normalizing (N condition) to enhance low-temperature toughness.
3. Corrosion Resistance
Petrochemical, Energy, and Related Industries
- Fundamental corrosion resistance: Sulfur and phosphorus content ≤0.035% each, minimizing intergranular corrosion caused by sulfides and phosphides. Manganese and silicon synergistically form a dense oxide film, providing protection against atmospheric and weak acid/alkali corrosion.
Our Certificates
FAQ
01.Do you provide mill test certificates (MTC) with the shipment?
02.What is the difference between A516 Gr70 and A515 Gr70? Which one should I choose for my boiler?
A516 Gr70 – Designed for intermediate and low-temperature service (down to -50°C). Offers better impact toughness at lower temperatures.
A515 Gr70 – Designed for high-temperature service (up to 650°C). Provides better elevated-temperature strength but lower low-temperature impact resistance.
Recommendation: Use A516 Gr70 for normal boilers and pressure vessels operating below 450°C. Use A515 Gr70 only if your design temperature consistently exceeds 450°C.
03.Can you supply A516 Gr70 plates in thicknesses outside your listed range?
04.What is the typical lead time for international orders?
Stock sizes: 7–15 days
Custom sizes/quantities: 20–30 days
Large bulk orders (≥500 tons): 30–45 days
Shipping time to major ports (e.g., Houston, Rotterdam, Jebel Ali, Shanghai) is typically 15–30 days by sea.
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