| Place of Origin: | China |
|---|---|
| Brand Name: | SunShine |
| Certification: | ISO9001 |
| Model Number: | 6mm to 114.3mm |
| Minimum Order Quantity: | 5T |
| Packaging Details: | In Bundles, Woodenbox As Your Requirement |
| Delivery Time: | 30days |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 2000T/Month |
| Keyword: | Seamless Tube | OD. Range: | 6mm – 114.3mm |
|---|---|---|---|
| Wall Thickness: | 1mm To 20mm | Standard: | DIN2391, EN10305, EN10216, EN10210 |
| Grade: | ST35, ST45, ST52,E255,E235,E355 | Length: | Max Length 12M |
| Application: | Fluid Pipe, Boiler Pipe, Drill Pipe, Gas Pipe, OIL PIPE, Chemical Fertilizer Pipe, Structure Pipe | ||
| High Light: | 1mm Seamless Alloy Tube,E255 Seamless Alloy Tube,E255 seamless mild steel tube |
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EN10305-1 E255 Seamless Alloy Tube mild Carbon Steel 1mm High Precision
Standard EN 10305 covers steel-produced precision tubes. This standard includes delivery conditions for six different parts. Part 1 as referred to as EN 10305-1 refers to Seamless cold drawn precision tubes. These precision tubes are specifically designated with the letter E, thereby the manufacturing processes adhere to the standard and keep tight tolerances, making them well-suited for use as machine parts. This is because a precision steel tube en 10305-1 is identical to the system it is to be attached to.
Hence, there is no error, nor is there any wiggle room for a mismatch to occur in the system. Therefore the use of EN 10305-1 material to make a cold-drawn precision tube is a welcome one. In addition to being designated as machine steels, there are many grades with differing yield strengths that could be used in the production of EN 10305-1 equivalent tube.
Generally, most buyers prefer the use of steels that have a minimum yield strength of about 235 N/mm2 or 355 N/mm2. The EN 10305-1 material is often designated with a relevant treatment the tubes have been processed with. For instance, the tube with the designation en 10305-1 E235+N would indicate that the steel is to be delivered in a normalized condition. There are several benefits of using an E355+SR EN 10305-1 Cold drawn seamless precision tube. Not only do they have a tighter level of tolerances, but they have better mechanical properties and hardness. Moreover, the cold drawing improves the surface of the EN 10305-1 E235+C tube as they are smoother.
EN 10305 is characterized by having exactly defined tolerances on dimensions and specified surface roughness. Typical fields of applications are in the furniture, vehicle, and general engineering industries. E235 in the pickled, normalized condition, to be delivered in standard length of 5.8 m.
Chemical Composition:
| Standard | Steel Grade | Material Number | C | Si | Mn | P | S | Cr | Mo |
| EN10305-1 EN10305-4 |
E235 | 1.0308 | <= 0.17 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
| EN10305-1 EN10305-4 |
E255 | 1.0408 | <= 0.21 | <= 0.35 | >=0.04 | <=0.025 | <=0.025 | - | - |
| EN10305-1 EN10305-4 |
E355 | 1.058 | <= 0.22 | <= 0.55 | <=1.60 | <=0.025 | <=0.025 | - | - |
| Steel Grade | (+C) | (+LC) | (+SR) | (+A) | (+N) | |||||||
| Rm Tensile Strength (Mpa) Min |
A Elongation (%) Min |
Rm Tensile Strength (Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa) Min | Rel Yield Strength(Mpa) Min | A Elongation (%) Min | Rm Tensile Strength (Mpa) Min | A Elongation (%)Min | Rm Tensile Strength (Mpa) | Rel Yield Strength (Mpa) Min | A Elongation (%) Min | |
| E235 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
| E255 | 580 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440-570 | 255 | 21 |
| E355 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490-630 | 355 | 22 |
Final supply conditions:.
| Designation | Symbol | Description |
| Cold finished (hard) | BK | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation. |
| Cold finished (soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding). |
| Cold-finished and stress-relieved | BKS | Heat treatment is applied following the last cold-forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
| Annealed | GBK | The last cold-forming process is followed by annealing in a controlled atmosphere. |
| Normalized | NBK | The last cold-forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
