A516 Grade 70 is a type of carbon steel plate widely used for pressure vessel applications. It is known for its good combination of strength and toughness, which allows it to perform reliably under high pressures and fluctuating temperatures. The steel is carefully controlled to ensure excellent weldability, making it a preferred choice for fabricating large and complex vessels in the oil, gas, and chemical industries. Its ability to resist brittle fracture, even at lower temperatures, also makes it suitable for low-temperature service and storage tanks. Overall, it is a versatile and dependable material commonly specified for critical equipment that requires high integrity and long-term performance.
Mechanical Properties
|
Grade |
Yield strength |
Tensile strength |
Elongation in 2" 1) |
Elongation in 8" 1) |
|---|---|---|---|---|
|
70 |
38 |
70 - 90 |
21 |
17 |
Chemical Composition
| Carbon, C | 0.31 % | 0.31 % | may vary with plate thickness |
| Iron, Fe | 98.315 % | 98.315 % | as balance |
| Manganese, Mn | 0.85 - 1.2 % | 0.85 - 1.2 % | |
| Phosphorus, P | 0.035 % | 0.035 % | |
| Silicon, Si | 0.15 - 0.40 % | 0.15 - 0.40 % | |
| Sulfur, S | 0.040 % | 0.040 % |
Applications
Pressure Vessels & Boilers: Tanks, boiler drums, pressure shells, components for steam boilers, and pressurized gas vessels.
Oil & Gas Industry: Storage tanks, separators, pipelines, and components for offshore platforms.
Power Generation: Heat exchangers, reactors, turbine volutes, and components in power plants.
Construction & Transportation: Bridges, structural tubing, railroad cars, and automotive/truck parts.
Chemical Processing: Vessels exposed to harsh chemicals and high mechanical stresses.
Advantages
High Strength & Toughness: Excellent tensile strength (485-620 MPa) and impact toughness, especially at lower temperatures.
Superior Weldability: Easily fabricated with standard welding techniques, suitable for complex designs.
Versatility: Good cold and hot forming properties, allowing for diverse manufacturing processes.
Durability: Resists brittle cracking and performs reliably in demanding conditions, offering long service life.
Standard Compliance: Meets stringent ASTM/ASME standards for critical applications, with options for supplementary testing (HIC, NACE).
Get an valued quotation for A516 Grade 70, Contact GNEE Steel.
What is A516 GR 70 material grade?
A516 Grade 70 is an excellent choice for service in lower than ambient temperature applications with excellent notch toughness and good weldability. This steel grade is used in both pressure vessel and industrial boilers and can withstand high pressure at different temperatures.
What is the difference between A516 grade 60 and grade 70?
The main difference between A516 Grade 60 and Grade 70 is their strength level. Grade 70 has higher minimum yield and tensile strength than Grade 60, making it more suitable for pressure vessels and equipment that must withstand greater internal pressure or heavier structural loads.