EN10305-5 Carbon Seamless Steel Tube For Precision Applications
Material and Specification
The EN10305-5 standard specifies the technical delivery conditions for welded and seamless cold-drawn carbon steel tubes for precision applications. This standard covers tubes with a maximum wall thickness of 6mm and a minimum outside diameter of 4mm. The tubes are intended for use in hydraulic and pneumatic systems, as well as in automotive and mechanical engineering applications.
Key Features
- High precision: The EN10305-5 carbon seamless steel tube is manufactured using a cold-drawing process, which ensures tight dimensional tolerances and excellent surface finish.
- Good machinability: The seamless nature of these tubes allows for easy manipulation and machining, making them versatile for various applications.
- High strength: The carbon steel used in the construction of these tubes provides good mechanical properties, including high tensile strength and hardness.
- Corrosion resistance: The Seamless Steel Tubes are also corrosion-resistant, making them suitable for use in environments where exposure to moisture or corrosive substances is a concern.
- Wide range of sizes: These tubes are available in a wide range of sizes, allowing for flexibility in design and application.
Chemical Composition
The chemical composition of EN10305-5 carbon seamless steel tubes typically includes the following elements (in percentage):
| Element | C | Si | Mn | P | S |
| Percentage | 0.17-0.22 | 0.10-0.35 | 0.40-0.80 | 0.035 max | 0.035 max |
Mechanical Properties
The mechanical properties of EN10305-5 carbon seamless steel tubes are as follows:
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
| Minimum Value | 440 | 290 | 12 | 75 |
| Maximum Value | 540 | 430 | 19 | - |
Steel Grade
The EN10305-5 standard applies to the following steel grades:
- E235: This grade is the most commonly used and offers good weldability, high strength, and excellent cold-forming properties.
- E355: This grade offers enhanced mechanical properties, including higher strength and impact resistance, suitable for more demanding applications.
Application
EN10305-5 carbon seamless steel tubes find application in a variety of precision engineering fields. Some of the common applications include:
- Hydraulic and pneumatic systems: The tubes are used for the transmission of pressurized fluids, such as hydraulic oil and air, in various industrial and automotive systems.
- Automotive industry: These tubes are essential components for manufacturing fuel injection systems, steering systems, and other precision automotive parts.
- Mechanical engineering: Their high precision and machinability make these tubes suitable for manufacturing precision machinery components, such as axles, shafts, and cylinders.
Possible Alternative Grades
Depending on the specific requirements of the application, alternative grades that may be considered as substitutes for EN10305-5 carbon seamless steel tubes include ASTM A519, DIN 2391, and JIS G3445. These standards offer similar specifications and properties, providing flexibility in material selection while ensuring the desired precision and performance.
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