The ASTM A519 4140 Seamless Precision Steel Tube is a high-quality chrome moly alloy steel tube that is widely used in various industries. It is designated under the ASTM A519 specification, which covers seamless carbon and alloy steel mechanical tubing. The material composition and mechanical properties of this tube make it suitable for demanding applications where strength, durability, and corrosion resistance are essential.
The A519 4140 Steel Tube is made from chromium-molybdenum alloy steel, also known as chrome moly steel. This alloy steel contains significant amounts of chromium and molybdenum, which enhance its strength and toughness. The tube is produced using a seamless manufacturing process, ensuring excellent dimensional accuracy and a smooth internal surface.
The chemical composition of the ASTM A519 4140 Seamless Precision Steel Tube is as follows (values are approximate percentages):
| Element | Composition |
|---|---|
| Carbon (C) | 0.38-0.43 |
| Manganese (Mn) | 0.75-1.00 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Silicon (Si) | 0.15-0.35 |
| Chromium (Cr) | 0.80-1.10 |
| Molybdenum (Mo) | 0.15-0.25 |
The mechanical properties of the ASTM A519 4140 Seamless Precision Steel Tube are provided in the table below:
| Property | Value |
|---|---|
| Tensile Strength | 850 MPa Min |
| Yield Strength | 640 MPa Min |
| Elongation | 25% Min |
| Hardness | 22 HRC Max (Annealed condition) |
The A519 4140 Steel Tube falls under the steel grade designation ASTM A519 Grade 4140. This grade signifies the specific composition and mechanical properties of the tube, as outlined by the ASTM standards.
The A519 4140 Steel Tube finds its application in various industries, including:
While the ASTM A519 4140 Seamless Precision Steel Tube is renowned for its excellent properties, there might be alternative grades suitable for specific applications. Some of the possible alternative grades include:
These alternative grades offer similar characteristics to the A519 4140, and their application suitability depends on specific requirements and industry standards.
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