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Carbon Steel Tube ASTM A519 4130 4140 Seamless Steel Pipe Thick Wall
The ASTM A519 steel tube specification covers both hot-finished and cold-finished mechanical tubing in sizes up to 12-3/4” O.D. A519 is available in round, square, and rectangular profiles, and in special sections.
Main steel grades: 4130,4135,4140,4150
Application: A519 seamless tubing is commonly used in applications requiring machining, heat treating, close tolerances, smooth finishes, and/or definite physical properties.
Chemical Composition & Mechanical Properties:
| Chemical Requirements for Alloy Steels | ||||||||
| Grade Designation | Chemical Composition Limits, % | |||||||
| Carbon | Manganese | Phosphorus, max | Sulfur, max | Silicon | Nickel | Chromium | Molybdenum | |
| 4130 | 0.28-0.33 | 0.40-0.60 | 0.040 | 0.040 | 0.15-0.35 | - | 0.80-1.10 | 0.15-0.25 |
| 4135 | 0.33-0.38 | 0.70-0.90 | 0.040 | 0.040 | 0.15-0.35 | - | 0.80-1.10 | 0.15-0.25 |
| 4140 | 0.38-0.43 | 0.75-1.00 | 0.040 | 0.040 | 0.15-0.35 | - | 0.80-1.10 | 0.15-0.25 |
| 4150 | 0.48-0.53 | 0.75-1.00 | 0.040 | 0.040 | 0.15-0.35 | - | 0.80-1.10 | 0.15-0.25 |
| Grade | Condition | Tensile Point (Mpa) | Yield Point (Mpa) | Elongation |
| 4130 | SR | ≥ 586 | ≥ 724 | ≥ 10% |
| A | ≥ 379 | ≥ 517 | ≥ 30% | |
| N | ≥ 414 | ≥ 621 | ≥ 20% | |
| 4140 | SR | ≥ 689 | ≥ 855 | ≥ 10% |
| A | ≥ 414 | ≥ 552 | ≥ 25% | |
| N | ≥ 621 | ≥ 855 | ≥ 20% |
Mark: As required.
Inspection and Test: chemical composition test, mechanical properties test(tensile, yield, elongation), process properties test(flatting, flaring, bending, hardness, impact, etc.), appearance and size test, non-destructive inspection test, hydrostastic test.
Delivery status: Annealed, normalized, normalized+Tempered, etc.
End: plain end, beveled end, threaded
End protection: plastic caps
Outside coating: black painting, anti-corrosion oil,galvanized finish, finish as per customer requirements.
Packing: Exporting package/wooden box /as requirement.
