ASTM A519 4140 alloy steel pipes are a type of seamless carbon and alloy steel mechanical tubing that conforms to the ASTM A519 specification. This specification covers a range of dimensions, tolerances, and mechanical properties for seamless precision tubing used in various industrial applications. The "4140" designation refers to the specific alloy composition of the steel, which primarily consists of chromium, molybdenum, and manganese. These pipes are characterized by their high tensile strength, good fatigue resistance, and excellent toughness, making them suitable for applications requiring durability and resistance to wear and tear. The alloy composition of 4140 steel pipes lends them a good combination of hardness and ductility, allowing them to withstand high-stress conditions without sacrificing flexibility.
The seamless manufacturing process of ASTM A519 4140 alloy steel pipes ensures uniformity in composition and structure, which contributes to their reliable mechanical properties. These pipes are commonly used in industries such as automotive, aerospace, oil and gas, construction, and machinery manufacturing. They are often employed in components like shafts, gears, axles, and various mechanical parts where high strength and resistance to fatigue are essential.
ASTM A519 4140 alloy steel pipes are seamless carbon and alloy steel tubing known for their high strength, toughness, and durability. They conform to the ASTM A519 specification and find application in a wide range of industries for components subjected to demanding mechanical conditions.
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Specification:
| Specification | ASTM A519 |
| Steel Grade | 4140 |
| Type | Seamless Carbon and Alloy Steel Mechanical Tubing |
| Size Range | Outer Diameter: 0.405" - 26.0" (10.3mm - 660.4mm) |
| Wall Thickness: 0.035" - 3.00" (0.9mm - 76.0mm) | null |
| Tolerance | OD: +/- 0.005" (0.13mm) |
| Wall Thickness: +/- 10% | null |
| Applications | Automotive, Aerospace, Oil and Gas, Construction, Machinery Manufacturing |
| Features | High Tensile Strength, Good Fatigue Resistance, Excellent Toughness |
| Common Uses | Shafts, Gears, Axles, Mechanical Components |
Chemical Composition of ASTM A519 4140 ALLOY STEEL PIPES
| Chemical Composition | Percentage Range |
| Chromium (Cr) | 0.80 - 1.10% |
| Molybdenum (Mo) | 0.15 - 0.25% |
| Manganese (Mn) | 0.75 - 1.00% |
| Carbon (C) | 0.38 - 0.43% |
Mechanical Properties of ASTM A519 4140 ALLOY STEEL PIPES
| Mechanical Properties | Minimum Values |
| Tensile Strength | 95,000 psi (655 MPa) |
| Yield Strength | 60,000 psi (415 MPa) |
| Elongation | 20% minimum |
Advantages of ASTM A519 4140 ALLOY STEEL PIPES
- Good general corrosion resistance and high strength
- Good sulfide stress corrosion resistance
- Resistance to chloride pitting and crevice corrosion
- Higher resistance to chloride stress corrosion cracking
- Easy to weld and conform
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| Pharmaceutical Equipment | Chemical Equipment |
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