ASTM A500 and ASTM A252 are two steel pipe standards with different uses and characteristics, each suited for specific applications and having their own technical requirements.
Gnee provides a comprehensive comparison of these two standards from multiple perspectives, helping you choose the appropriate standard and material based on your engineering needs.
Different Applications
The difference in application areas is the most significant distinction between ASTM A500 and ASTM A252.
ASTM A500 is used for welded, riveted, or bolted construction of bridges, buildings, and general structural applications.
ASTM A252 is applied to pipe piles, where the steel cylinder serves as a permanent load-bearing component or as a shell for cast-in-place concrete piles.
In short: ASTM A500 is for structural steel pipe applications, while ASTM A252 is for piling pipe applications.
Different Manufacturing Processes
Both ASTM A500 and ASTM A252 allow seamless and welded processes, but there are differences in permitted welding methods:
ASTM A500 only allows ERW (Electric Resistance Welded) pipes with longitudinal seams.
ASTM A252 permits a wider range of welding processes, including ERW, flash welding, and fusion welding, with seams that can be longitudinal, helical-butt, or helical-lap.
Different Shapes and Dimensions
| Standard | ASTM A500 | ASTM A252 |
|---|---|---|
| Shape | Round, square, rectangular, and special shapes | Round |
| Dimension | Periphery ≤ 88 in. [2235 mm], wall thickness ≤ 1 in. [25.4 mm] | Not specified |
Different Chemical Composition
| Element | ASTM A500 (Grade B & D) | ASTM A500 (Grade C) | ASTM A252 (Grade 1, 2 & 3) |
|---|---|---|---|
| Carbon | 0.30 % max | 0.27 % max | - |
| Manganese | 1.40 % max | 1.40 % max | - |
| Phosphorus | 0.045 % max | 0.045 % max | 0.050 % max |
| Sulfur | 0.045 % max | 0.045 % max | - |
| Copper | 0.18 % min | 0.18 % min | - |
ASTM A252 has relatively simple chemical composition requirements because it is mainly used as a permanent load-bearing member or concrete shell, focusing on load-carrying capacity and durability.
Different Mechanical Properties
While tensile property requirements are similar, ASTM A500 has stricter mechanical standards. In addition to tensile testing, it requires Flattening, Flaring, and Wedge Crush tests, ensuring higher plasticity and crush resistance for high-load structural environments.
ASTM A252 does not require these additional tests.
| Property | ASTM A500 | ASTM A252 |
|---|---|---|
| Tensile Strength | Grade B: 400 MPa min Grade C: 425 MPa min Grade D: 400 MPa min |
Grade 1: 345 MPa min Grade 2: 415 MPa min Grade 3: 455 MPa min |
| Yield Strength | Grade B: 315 MPa min Grade C: 345 MPa min Grade D: 250 MPa min |
Grade 1: 205 MPa min Grade 2: 240 MPa min Grade 3: 310 MPa min |
ASTM A500 and ASTM A252 are two steel pipe standards with distinct uses:
ASTM A500: Structural and load-bearing scenarios.
ASTM A252: Foundation applications, focusing on corrosion resistance and durability.
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