What material is A53 pipe equivalent to?
ASTM A53 Carbon Steel Seamless Pipe Specifications
ASTM A53 seamless steel pipe is an American standard brand. A53-F corresponds to China's Q235 material, A53-A corresponds to China's No. 10 material, and A53-B corresponds to China's No. 20 material.
ASTM A53 is a carbon steel alloy that can be used as structural steel or for low-pressure piping.
ASTM A53 (ASME SA53) Carbon Steel Pipe is a specification covering seamless, welded black and hot-dip galvanized steel pipe in sizes NPS 1/8" to NPS 26. A53 is suitable for pressure and mechanical applications and is also suitable for general use in steam , water, gas and air pipelines.
A53 pipes are available in three types (F, E, S) and two grades (A, B).
A53 Type F is manufactured with furnace butt welds or may have continuous welds (Grade A only)
A53 Type E features resistance welding (Class A and B)
A53 S type is a seamless pipe, available in grades A and B)
Chemical Properties %
| / | Grade |
C, max |
Mn, max |
P, max |
S, max |
Cu*, max |
Ni*, max |
Cr*, max |
Mo*, max |
V*, max |
| Type S (Seamless) | A | 0.25 | 0.95 | 0.05 | 0.05 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
| B | 0.3 | 1.2 | 0.05 | 0.05 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 | |
| Type E (Electric-resistance Welded) | A | 0.25 | 0.95 | 0.05 | 0.05 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
| B | 0.3 | 1.2 | 0.05 | 0.05 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 | |
| Type F (Furnace-welded) | A | 0.3 | 1.2 | 0.05 | 0.05 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
Mechanical Properties
| Grade A | Grade B | |
| Tensile Strength, min., psi, (MPa) | 48,000 (330) | 60,000 (415) |
| Yield Strength, min., psi, (MPa) | 30,000 (205) | 35,000 (240) |
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