What is astm a252 material
A252 usually refers to the ASTM A252 standard, which is a standard for steel pipes used for piles and structural pipes. The material is mainly carbon steel or low alloy steel, depending on the grade (such as GR.1, GR.2, GR.3).
Astm a252 material specifications
| Standard | ASTM A252 |
| Steel Grade | Grade 1 |
| Grade 2 | |
| Grade 3 | |
| Diamensions | 6" – 56" |
| 168.3mm – 1422mm | |
| DN150-DN1400 | |
| Thickness | 0.134"- 1" |
| 3.40mm – 25.4mm | |
| Unit Length | R1 (4.88m – 7.62m) |
| R2(7.62m – 10.67m) | |
| Uniform Length | |
| Pipe End | Plain, Bevelled |
astm a252 chemical composition
| Chemical Requirements | |||||
|---|---|---|---|---|---|
| Element | Composition, % | ||||
| Grades B and D | Grade C | ||||
| Heat Analysis | Product Analysis | Heat Analysis | Product Analysis | ||
| Carbon, maxA | 0.26 | 0.30 | 0.23 | 0.27 | |
| Manganese, maxA | 1.35 | 1.40 | 1.35 | 1.40 | |
| Phosphorus, max | 0.035 | 0.045 | 0.035 | 0.045 | |
| Sulfur, max | 0.035 | 0.045 | 0.035 | 0.045 | |
| Copper, minB | 0.20 | 0.18 | 0.20 | 0.18 | |
| A For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.60% by product analysis. B If copper-containing steel is specified in the purchase order. |
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Astm a252 mechanical properties pdf
| Tensile Requirements | |||
|---|---|---|---|
| Mechanical Properties | Grade 1 | Grade 2 | Grade 3 |
| Tensile strength, min, psi [MPa] | 50 000 [345] | 60 000 [415] | 66 000 [455] |
| Yield point or yield strength, min, psi [MPa] | 30 000 [205] | 35 000 [240] | 45 000 [310] |
| Basic minimum elongation for nominal wall thicknesses 5⁄16 in. [7.9 mm] or more: | – | – | – |
| Elongation in 8 in. [203.2 mm], min, % | 18 | 14 | – |
| Elongation in 2 in. [50.8 mm], min, % | 30 | 25 | 20 |
| For nominal wall thicknesses less than 5⁄16 in. [7.9 mm], the deduction from the basic minimum elongation in 2 in. [50.8 mm] for each 1⁄32 – in. [0.8 mm] decrease in nominal wall thickness below 5⁄16 in. [7.9 mm], in percentage points | 1.50A | 1.25A | 1.0A |
| A Table 2 gives the computed minimum values: | |||
astm a252 vs a53
| Parameter | ASTM A252 (Piling Pipe) | ASTM A53 (Fluid Pipe) |
|---|---|---|
| Primary Use | Foundation piles/retaining structures | Fluid conveyance (water/gas/oil) |
| Key Strength | Bend resistance (Gr.3 yield ≥241 MPa) | Internal pressure resistance (Gr.B yield ≥240 MPa) |
| Critical Requirement | Straightness ≤0.25% of length | 100% hydrostatic test pass |
| Weld Type | Spiral/seam weld (load-bearing) | Seamless/electric resistance weld (sealed) |
| Rejection Criteria | Rejected if body bends | Rejected for pinhole leaks |
ASTM A252 Piling Pipe factory
