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EN10305-1 E255 Carbon Steel Seamless Tubes

Basic Information
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
Detail Information
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

Product Description

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
E235 1.0308 <= 0.17 <= 0.35 >=0.04 <=0.025 <=0.025 - -
E255 1.0408 <= 0.21 <= 0.35 >=0.04 <=0.025 <=0.025 - -
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 (%)


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.


EN10305-1 E255 Carbon Steel Seamless Tubes 0


Contact Details

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