ASTM A53 Grade B is a welded or seamless steel pipe with a minimum yield strength of 240 MPa and tensile strength of 415 MPa for low-pressure fluid transportation.
ASTM A53 Grade B Piping Type
Type F- Furnace-butt-welded, continuous welded
It is a process in which steel plates are preheated in a high-temperature furnace and welded using welding consumables. In the welding process, the steel plate is preheated to a sufficient temperature and then welded in the furnace by means of welding consumables to form a weld seam. Continuous welding means that the steel plate is continuously welded in the furnace, allowing for the manufacture of longer lengths of pipe.
Type E- Electric-resistance-welded
This is a welding process in which the edges of steel plates are heated and pressed together to form a weld by applying an electric current to both ends of the pipe using resistance heating and pressure. Instead of using molten welding consumables, resistance heating heats the edges of the steel plate to a sufficient temperature and applies pressure to form a weld at the edges of the steel plate.
Type S - Seamless
Seamless steel pipe is formed directly into a pipe without any seams by rolling, piercing, or extruding.
Raw Materials
Open furnace, electric furnace, or alkaline oxygen.
One or more processes may be used.
Heat Treatment
Welds in Type E Grade B or Type F Grade B pipe shall be heat treated after welding to at least 1000 °F [540°C] so that no untempered martensite exists, or otherwise treated so that no untempered martensite exists.
Chemical Requirements
| Type | C (Carbon) |
Mn (Manganese) |
P (Phosphorus) |
S (Sulfur) |
Cu (Copper) |
N (Nickel) |
Cr (Chromium) |
Mo (Molybdenum) |
V (Vanadium) |
| Type S | 0.30 b | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| Type E | 0.30 b | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| Type F | 0.30 a | 1.20 | 0.05 | 0.045 | 0.40 | 0.40 | 0.40 | 0.15 | 0.08 |
| a For each reduction of 0.01 % below the specified carbon maximum, an increase of 0.06 % of manganese above the specified maximum will be permitted up to a maximum of 1.35%. b For each reduction of 0.01 % below the specified carbon maximum, an increase of 0.06 % of manganese above the specified maximum will be permitted up to a maximum of 1.65%. c Cu, N, Cr. Mo and V: these five elements combined shall not exceed 1 % |
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The chemical composition of ASTM A53 Grade B contains up to 0.30% carbon (C), which helps maintain good weldability and some hardness. The content of manganese (Mn) is limited to a maximum of 0.95%, which enhances its wear resistance and improves impact resistance. In addition, phosphorus (P) is kept to a maximum of 0.05%, while sulfur (S) is kept to a maximum of 0.045%. The low content of these two elements helps to improve the purity and overall mechanical strength of the steel.
Tensile Requirements
| Grade | Tensile strength, min | Yield strength, min | Elongation in50 mm (2 in ) |
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| psi | MPa | psi | MPa | note | |
| Grade B | 60,000 | 415 | 35,000 | 240 | Table X4.1 or Table X4.2 |
| Note: The minimum elongation in 2 in (50 mm) shall be that determined by the following equation: e = 625000 [1940] A0.2/U0.9 e = minimum elongation in 2 in or 50 mm in percent, rounded to the nearest percent. A= the lesser of 0.75 in2 (500 mm2）and the cross-sectional area of the tension test specimen, calculated using the specified outside diameter of the pipe, or the nominal width of the tension test specimen and the specified wall thickness of the pipe, with the calculated value rounded to the nearest 0.01 in2 (1 mm2). U=specified minimum tensile strength, psi [MPa]. |
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These mechanical properties make ASTM A53 Grade B steel pipe suitable not only for piping systems that transport water, gases, and other low-pressure fluids but also for supporting structures in architectural and mechanical constructions, such as bridges and towers.
Other Experimentation
Bend Test
No cracks will be created in any part of the weld and no welds will be opened seam.
Flattening Test
There shall be no cracks or breaks in the interior, exterior, or end surfaces of the weld until the distance between plates is less than the distance specified for the pipe.
Hydrostatic Test
All piping shall be hydrostatically tested with no leaks in welds or pipe bodies.
Hydrostatic Test
All piping shall be hydrostatically tested with no leaks in welds or pipe bodies.
Nondestructive Electric Test
If the nondestructive electric test has been performed, the lengths shall be marked with the letters "NDE." The certification, if required, shall state Nondestructive ElectricTested and shall indicate which of the tests was applied. Also, the letters NDE shall be appended to the product specification number and grade shown on the certification.
ASTM A53 Grade B Steel Pipe Applications
Conveying fluids: suitable for conveying water, gases, and steam.
Building and Structures: For building support structures and bridges.
Machine building: for manufacturing heavy-duty components such as bearings and gears.
Oil and Gas Industry: Used in the construction of drilling and pipeline systems.
Fire Protection Systems: Commonly used in the construction of fire sprinkler systems.
Air Conditioning and HVAC Systems: Used in the construction of piping networks.
ASTM A53 Grade B Alternative Materials
API 5L Grade B Pipe: API 5L Grade B pipe is a commonly used pipe for the transportation of natural gas and oil and has a similar chemical composition and mechanical properties to ASTM A53 Grade B. It is also used for the transportation of gas and oil.
ASTM A106 Grade B Steel Pipe: ASTM A106 Grade B steel pipe is another commonly used carbon steel pipe material that offers higher compressive strength and a wider range of applications than ASTM A53 Grade B. The ASTM A106 Grade B steel pipe has been used in a number of applications, such as in the manufacture of steel pipe and in the production of steel pipe.
ASTM A333 Grade 6 Steel Tubing: ASTM A333 Grade 6 steel tubing is cryogenic carbon steel tubing for service in cryogenic environments, such as cryogenic refrigeration equipment and cryogenic gas transmission piping.
DIN 17175 Tubes: DIN 17175 is a German standard that provides seamless steel tubes for use in high-temperature and high-pressure environments and can be used as an alternative to ASTM A53 Grade B. The tubes are available in a wide range of sizes and thicknesses.
EN 10216-2 Tubes: The EN 10216-2 standard provides seamless steel tubes for pressure applications, suitable for service at high temperatures and high pressures, and as an alternative to ASTM A53 Grade B.
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Post time: Mar-19-2024