ASTM A515 Grade 70 is a type of carbon steel plate tailored for pressure-bearing applications operating in elevated-temperature environments. It boasts excellent weldability, reliable structural integrity, and resistance to thermal fatigue, making it a preferred choice across the oil and gas, power generation, and chemical processing sectors. This grade is widely used to fabricate pressure vessels, boilers, heat exchangers, and industrial storage tanks, as it can withstand harsh service conditions involving high internal pressure and cyclic temperature variations without compromising performance.
Specifications
|
Specifications |
: |
ASTM A515 |
|
Thickness |
: |
8-100mm |
|
Width |
: |
1500-3500mm |
|
Length |
: |
3000-8000mm |
|
Surface |
: |
2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hair line, sand blast, Brush, etching, etc |
|
Finish |
: |
Hot rolled plate (HR), Cold rolled sheet (CR) |
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Form |
: |
Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Strip etc. |
Chemical Composition
|
Grade |
C |
Mn |
P |
S |
Si |
|
A515 Grade 70 |
0.30-0.35 |
1.30 max |
0.035 max |
0.035 max |
0.13-0.45 |
Mechanical Properties
|
Grade |
Thickness |
Yield |
Tensile |
Elongation |
|
A515 Grade 70 |
50-200mm |
MPa -551 min |
MPa – 485-620 |
17-21% |
applications
Oil and gas industry pressure-bearing equipment
It is a core material for fabricating pressure vessels used in hydrocarbon exploration, refining, and storage, capable of withstanding harsh working conditions involving pressure fluctuations and corrosive media contact.
Boilers and heat exchangers
Widely applied in the construction of industrial boilers and heat exchange units for power generation, heating systems, and chemical processing, as it maintains stable structural performance under long-term elevated-temperature and pressure service.
Industrial storage tanks
Utilized to manufacture storage tanks for pressurized liquids and high-temperature fluids, meeting the safety and durability requirements of chemical, petrochemical, and energy storage sectors.
Other pressure-sensitive components
Adopted for producing reactor shells, pressure headers, and related critical parts in chemical plants and metallurgical facilities, where resistance to thermal fatigue and pressure-bearing capacity are essential.
Full specification and details are available on request. The above information is provided for guidance purposes only. For specific design requirements please contact our technical sales staff.
What is the difference between A515 grade 70 and A516 70?
SA-516-70 is commonly used for pressure vessels where moderate and lower temperature service is required. SA515 GR 70 is used for intermediate and higher temperature service applications. ASME standards: Both materials adhere to specific ASME standards for pressure vessel applications.
What welding rod for A515 Grade 70?
For ASTM A515 Grade 70 carbon steel, common welding rods (electrodes/wires) include E7018 (SMAW/Stick) for general use, ER70S-6 (GMAW/MIG) for mill scale, E71T-1C/12MJ (FCAW/Flux-Cored) for high deposition, and ER70S-2 (GTAW/TIG) for clean welds.