Alloy Steel Pipe For High-stress Mechanical And Structural Uses
Astm a519 4130 seamless pipe offers high strength, toughness, and corrosion resistance for aerospace, automotive, and industrial applications.
Alloy Steel Pipe For High-stress Mechanical And Structural Uses
Astm a519 4130 seamless pipe offers high strength, toughness, and corrosion resistance for aerospace, automotive, and industrial applications.
ASTM A519 4130 Seamless Pipe is a premium alloy steel pipe engineered for high strength, toughness, and corrosion resistance in demanding applications. Conforming to the ASTM A519 standard, this seamless mechanical tubing is designed for high-stress environments in industries such as aerospace, automotive, and oil and gas. With a steel number of 1.7218, the 4130 grade features a composition of 0.28-0.33% carbon, 0.80-1.10% chromium, and 0.15-0.25% molybdenum, making it ideal for industrial piping systems requiring superior durability and performance.
The ASTM A519 4130 Seamless Pipe is manufactured through hot-rolling or cold-drawing processes, followed by heat treatments such as normalizing, annealing, or quenching and tempering to optimize its mechanical properties. Available in outer diameters from 1/4” to 50 7/8” and wall thicknesses from 1mm to 25mm, with lengths of 5.8m, 6m, 11.8m, or random (5-12m), it meets diverse project specifications. Surface treatments like galvanizing, FBE, or 3LPE coatings enhance corrosion resistance, protecting against wear in harsh environments. Plain, beveled, or threaded ends ensure seamless integration into industrial piping and mechanical systems.
The Seamless Mechanical Tubing undergoes rigorous testing, including tensile, hardness, flattening, and nondestructive tests, to ensure compliance with ASTM A519 standards. With a tensile strength of approximately 670 MPa (normalized) and a yield strength of 435 MPa, the 4130 grade offers exceptional toughness and fatigue resistance, making it suitable for high-stress components like aircraft frames, automotive roll cages, and hydraulic systems. Its corrosion resistance is enhanced by alloying elements like chromium and molybdenum, ensuring reliability in boiler pipeline protection and other aggressive environments.
Compatible with fittings and components conforming to standards like ASTM A234 or A105, the ASTM A519 4130 Seamless Pipe integrates seamlessly into complex industrial piping networks. Compared to carbon steel grades like ASTM A519 1026 or high-temperature alloy pipes like ASTM A335 P11, the 4130 grade offers a superior balance of strength, toughness, and weldability, making it a preferred choice for applications requiring high-performance high-strength piping. Its ability to be heat-treated allows for customized properties, such as increased hardness or ductility, to meet specific operational demands.
Engineered to address challenges like pipeline wear, corrosion, and mechanical stress, the ASTM A519 4130 Seamless Pipe delivers unmatched performance in high-throughput industrial systems. Its seamless construction and alloy composition ensure durability and safety in critical applications, making it an ideal solution for engineers seeking reliable mechanical tubing for aerospace, automotive, and industrial piping projects.
| Feature | ASTM A519 4130 | ASTM A519 1026 | ASTM A335 P11 |
|---|---|---|---|
| Material Type | Alloy Steel | Carbon Steel | Alloy Steel |
| Temperature Range | Moderate to High | Moderate | High (up to 540°C) |
| Notch Toughness | Good | Moderate | Good |
| Corrosion Resistance | Good (With coatings) | Good (With coatings) | Good (With coatings) |
| Applications | Aerospace, Automotive, Hydraulics | Hydraulic Cylinders, Machining | Boilers, Refineries |
| Tensile Strength (MPa) | ~670 (Normalized) | ~480 | 415 (min) |
| Yield Strength (MPa) | ~435 (Normalized) | ~310 | 205 (min) |
| Key Advantage | High strength and toughness | Cost-effective for general use | High-temp creep resistance |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.28-0.33 |
| Manganese (Mn) | 0.40-0.60 |
| Phosphorus (P) | ≤0.040 |
| Sulfur (S) | ≤0.040 |
| Silicon (Si) | 0.15-0.35 |
| Chromium (Cr) | 0.80-1.10 |
| Molybdenum (Mo) | 0.15-0.25 |
| Property | Value |
|---|---|
| Tensile Strength, min (MPa) | ~670 |
| Yield Strength, min (MPa) | ~435 |
| Elongation, min (%) | 20 |
| Hardness, max (HBW) | ~197 |
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