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EN10305-1 Seamless Cold Drawn Tubes

Grade E215, E235, E355

EN10305-1 E215, E235, E355 is the standard applicable to seamless cold drawn tubes

EN10305 Consists of the following parts under the general title:

Steel tubes for precision applications.

Technical delivery conditions:

  • Part 1: Seamless cold drawn tubes.
  • Part 2: Welded cold drawn tubes.
  • Part 3: Welded cold sized tubes.
  • Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems.
  • Part 5: Welded and cold sized square and rectangular tubes.
  • Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems.

Chemical Composition

Steel GradeChemical Components (%)
Steel NameSteel NumberC

max.

Si

max.

Mn

max.

P

max.

S

max.

AL

min.

E2151.02120.100.050.70.0250.0250.025
E2351.03080.170.351.20.0250.025/
E3551.0580.220.551.60.0250.025/

 

Delivery Conditions

The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes. The tubes shall be supplied in one of the delivery conditions as follows:

DesignationSymbolDescription
Cold drawn/hard+CNo heat treatment after the final cold drawing process.
Cold drawn/soft+LCAfter the final heat treatment there is a suitable drawing pass.
Cold drawn and stress relieved+SRAfter the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.
Annealed+AAfter the final cold drawing process the tubes are annealed in a controlled atmosphere.
Normalized+NAfter the final cold drawing operation, the tubes are normalized in a controlled atmosphere.

 

Delivery Condition Symbol in accordance with EN10305 and DIN2391

Symbol in accordance with EN 10305Symbol in accordance with DIN2391
+CBK
+LCBKW
+SRBKS
+AGBK
+NNBK

 

Mechanical Properties

Mechanical properties at room temperature
Steel GradeMinimum values for the delivery condition
Steel NameSteel Number+C+LC+SR+A+N
Rm

Mpa

A

%

Rm

Mpa

A

%

Rm

Mpa

ReH

Mpa

A

%

Rm

Mpa

A

%

Rm

Mpa

ReH

Mpa

A

%

E2151.02124308380123802801628030290 to 4302530
E2351.03084806420104203501631525340 to 48023525
E3551.0580640458075804501045022490 to 63035522

 

Inspection and test list for the EN 10305 Standard

Inspection or test typesTest frequency
Internal testAcceptance test
Chemical analysisMM
Tensile testingMOne per tested batch
Flattening test or extension testMTwo per tested batch
Dimension verificationMM
Visual inspectionMM
NDT in order to identify leaksIndividualIndividual

Standard: EN10305-1

Description Name: EN10305-1 Seamless cold drawn tubes, E235 Precision tubes, Seamless precision tubes, E355 Precision tubes

Size: 4mm-260mm

W.T.: 0.5mm-25mm

Shape: Round

Production type: Cold drawn or cold rolled

Length: Single random length/ Double random length or as customer’s actual request max length is 10m

Grade: E215, E235, E355

Marking

The following marking shall, unless option 22 is specified, be shown on a label attached to the bundle:

  • the manufacturer’s name or trade mark;
  • the specified dimensions;
  • the number of this European Standard;
  • the steel name or number;
  • the cast number;
  • the delivery condition;
  • in the case of specific inspection, an identification number (e. g. order or item number) which permits the correlation of the product or delivery unit to the related document.

Option 22: Alternative marking is specified.

Note:

Mill test certificates will be issued according to EN10204.3

The tubes Shall be Seamless cold drawn or cold rolled.

Protection and Packing:

Packed in wooden box or bundles protected with plastic paper, and suitably protected for sea-worthily delivery or as requested.

The tubes shall be delivered with a temporary corrosion protection. The type of protection shall be at the discretion of the manufacturer

Application:

apply to the Precision steel tubes used.

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Photos for EN10305-1:

EN10305-1 E235 NBK Size OD. 8mm x W.T. 1mm

EN10305-1 E235 NBK Tubes Size OD measuring

EN10305-1 E235 NBK Tubes Size OD measuring

EN10305-1 E235 NBK Tubes Size ID measuring

EN10305-1 E235 NBK Tubes Size ID measuring

EN10305-1 E235 NBK Tubes Size WT measuring

EN10305-1 E235 NBK Tubes Size WT measuring

EN10305-1 E235 NBK Tubes Size inspection

EN10305-1 E235 NBK Tubes Size inspection

EN10305-1 E355 NBK Size OD. 13.2mm x W.T. 2mm

EN10305-1 E355 NBK Tubes Packing

EN10305-1 E355 NBK Tubes Packing

EN10305-1 E355 NBK Tubes Size OD measuring

EN10305-1 E355 NBK Tubes Size OD measuring

ASTM A519 AISI1045 SAE1045 Seamless Tubing

ASTM A519 AISI1045 SAE1045 Seamless Tubing

EN10305-1 E355 NBK Tubes Wooden Case

EN10305-1 E355 NBK Tubes Wooden Case

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