ASTM A516 Grade 70 is a widely used carbon steel plate for building welded pressure vessels and tanks, known for its high strength and toughness in moderate to lower temperature service, often containing manganese, phosphorus, sulfur, and silicon for enhanced performance, making it ideal for containing liquids and gases under pressure.
Mechanical Properties
|
Grade |
Yield strength |
Tensile strength |
Elongation in 2" 1) |
Elongation in 8" 1) |
|---|---|---|---|---|
|
70 |
38 |
70 - 90 |
21 |
17 |
Chemical Composition
|
C |
Mn 1) |
P 2) |
S 2) |
Si |
|---|---|---|---|---|
|
0.25 |
0.85 - 1.20 |
0.020 |
0.010 |
0.40 |
Key Applications:
Pressure Vessels: Tanks for oil, gas, petrochemicals, and chemicals, used in refineries, processing plants, and offshore platforms where strength and reliability under pressure are essential.
Boilers & Power Generation: Components for steam boilers and reactors, where resistance to high temperatures and thermal cycling is required for long-term operation.
Storage Tanks: Large tanks for liquids and gases (API 650/620), providing stable performance for storing crude oil, refined products, and industrial chemicals.
Industrial Equipment: Heat exchangers, pipes, and structural parts, valued for its weldability and toughness in heavy‑duty processing systems.
Transportation: Railway cars, truck frames, and automotive parts, offering the durability needed for demanding transportation environments.
Construction: Bridges, buildings, and lighting standards, used where strength and cost‑effectiveness are important.
Cryogenic Applications: Equipment for low‑temperature storage like LNG, thanks to its ability to maintain toughness at very cold temperatures.
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What does grade 70 steel mean?
A516-70 plate is a high-strength, low-alloy steel plate that offers an optimum combination of strength, weldability, and notch toughness. A516 Grade 70 carbon steel properties include: Tensile Strength: 70-90 ksi. Yield Strength: 38 ksi.
What is a 516 GR 70 equivalent to?
What is the equivalent material for A516 GR 70? Common equivalents include ASME SA516 GR 70, EN 10028 P355GH, and BS1501 224-490 A & B, suitable for similar pressure vessel applications.