Products Description
EN10305-4 Seamless Hydraulic Steel Tube and Tubing
Advantages of EN 10305-4 Seamless Precision Steel Tubes in Hydraulic Applications
- EN10305-4 is a standard designed for hydraulic and pneumatic systems. Compared to DIN 2391, although their precision is similar, EN 10305-4 is more widely coordinated across Europe.
- EN10305-4 Seamless Hydraulic Steel Tube and Tubing is manufactured with strict tolerances on outer diameter, wall thickness, and roundness, ensuring leak-free sealing of fittings and connectors in hydraulic circuits.
- High internal surface cleanliness reduces the risk of contamination, which is critical for hydraulic fluid systems. And EN 10305-4 tubes are cold drawn and normalized, with excellent ductility, easy to bend, flare, or form, and will not crack, making them ideal for custom pipeline routing.
Applications of EN10305-4 Seamless Hydraulic Steel Tube and Tubing
- Hydraulic Cylinders: Essential components in machinery that require precise movement and force.
- Pipelines: Used for transporting hydraulic fluids in industrial systems.
- Automotive Systems: Employed in hydraulic brakes and steering systems.
- Construction Equipment: Found in hydraulic systems of excavators, loaders, and other heavy machinery.
Chemical Composition
The chemical composition of EN10305-4 seamless hydraulic steel tubes is critical for ensuring their performance. Below is a typical composition table:
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Silicon (Si) | Chromium (Cr) | Nickel (Ni) |
| Composition (%) | 0.10 - 0.25 | 0.30 - 0.60 | ≤ 0.025 | ≤ 0.025 | ≤ 0.40 | ≤ 0.30 | ≤ 0.30 |
Mechanical Properties
The mechanical properties of EN10305-4 tubes are vital for their application in hydraulic systems. The following table summarizes these properties:
| Property | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| Value | ≥ 350 | ≥ 450 | ≥ 20 | ≤ 180 |
Physical Properties
Physical properties are essential for understanding the behavior of the material under various conditions. The table below outlines key physical properties:
| Property | Density (g/cm³) | Melting Point (°C) | Thermal Conductivity (W/m·K) | Electrical Resistivity (μΩ·m) |
| Value | 7.85 | 1425 - 1540 | 50.2 | 0.00001724 |
Possible Alternative Grades
While EN10305-4 specifies certain grades, there are alternative grades that may be suitable for similar applications:
ASTM A106: A standard specification for seamless carbon steel pipes for high-temperature service.
ASTM A53: A specification for pipe suitable for welding and bending.
ISO 3183: A standard for line pipes used in the petroleum and natural gas industries.
These alternative grades may offer similar mechanical and chemical properties, making them viable options depending on specific application requirements.
Packaging
Once the pipes have passed all inspections and tests, they are ready for packaging. They are usually packaged in bales wrapped in plastic. The pipes can be bundled and ready for delivery according to customer requirements, ensuring that the pipes are protected during transportation and prevent surface damage.
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