A573 Grade 70 (A573 Gr70) structural carbon steel for low and medium temperature pressure vessels is produced in accordance with ASTM A573/A573M standard of ASME standard. A573 Grade 70 prevessel vessel steel plate offers high strength and toughness, allowing it to withstand heavy loads, while also demonstrating excellent impact toughness at low temperatures. A573 Gr70 prevessel vessel steel plate also provides superior corrosion and abrasion resistance, maintaining its performance and appearance over long periods even in harsh environments.
A573 Grade 70 prevessel vessel steel is a structural grade carbon-manganese-silicon steel plate manufactured using a fine-grain practice. The number "70" in the grade designation indicates a minimum tensile strength of 70 ksi (approximately 485 MPa). A573 Grade 70 pressure vessel steel plate is widely used in the petroleum, chemical, power plant, and boiler industries. It's used to make equipment and components such as reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, high-pressure water pipes for hydropower stations, and turbine scrolls.
Chemical Composition of A573 Grade 70
The chemical makeup of A573 Grade 70 steel ensures its strength and toughness. Below is a detailed breakdown of its composition:
| Element |
Carbon (C) |
Manganese (Mn) |
Phosphorus (P) |
Sulfur (S) |
Silicon (Si) |
| Content (%) |
0.27 max |
0.85-1.20 |
0.035 max |
0.040 max |
0.15-0.40 |
Mechanical Properties of A573 Grade 70
The mechanical properties of A573 Grade 70 structural steel make it ideal for high-stress environments.
| Property |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
| Value |
485-620 |
290 min |
18 min |
Equivalent Grades of A573 Grade 70
A573 Grade 70 structural steel can be compared to other international standards for similar applications.
| Standard |
Equivalent Grade |
| EN 10025 |
S275JR |
| JIS G3101 |
SS400 |
| GB/T 700 |
Q235B |
Applications and Dimensions of A573 Grade 70 Steel A573 Grade 70 is a versatile material used across various industries due to its robust properties. It is often sought after as **A573 Grade 70 weldable carbon steel** for fabrication purposes. Below are the common uses and available dimensions: - **Applications:** - Structural components in bridges and buildings - Storage tanks and pressure vessels - Heavy machinery and equipment frames - Marine and offshore structures - **Conventional Dimensions:** - Thickness: 6 mm to 100 mm - Width: 1500 mm to 3000 mm - Length: 3000 mm to 12000 mm These dimensions can be customized based on project requirements, making it a flexible choice for engineers looking for **A573 Grade 70 structural steel plate**.
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Conclusion A573 Grade 70 structural carbon steel stands out as a high-strength, low-alloy material with exceptional toughness and weldability. Its compliance with ASTM standards, combined with a well-balanced chemical composition and impressive mechanical properties, makes it a top choice for critical applications such as pressure vessels and structural frameworks. Whether you\'re exploring **A573 Grade 70 steel for storage tanks** or seeking **A573 Grade 70 low-alloy steel applications**, this material offers reliability and versatility. With customizable dimensions and a range of equivalent grades, it meets the needs of diverse industrial projects worldwide.
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