DIN2391 Seamless Precision Steel Tube

DIN2391 Seamless Precision Steel Tube
DIN2391 Seamless Precision Steel Tube
DIN2391 Seamless Precision Steel Tube
DIN 2391 standard specifies theSeamless Precision Steel Tube used for Mechanical and Automobile.
Carbon steel tubes for machine structural purposes .
Standard:
  • DIN2391-1: Seamless Precision Steel Tube.
  • EN 10305-1: Steel tubes for precision applications.
Size (mm):
  • Outer Dimensions: 4.0mm-60.0mm
  • Wall Thickness: 0.5mm-8 mm
  • Length: max 6000mm
Application:
  • motor-car construction
  • pneumatic
  • hydraulic operating mechanisms
Steel grade:
  • DIN2391-1 ST35
  • DIN2391-1 ST45
  • DIN2391-1 ST52

Delivery Condition:

  • GBK, BKS, BK, BKW, NBK

Inspection and Test:

  • Chemical Composition, Mechanical Properties
  • Visual and Dimension Test
  • NDT
  • Grain Size Test

Surface treatment:

  • Oil-dip, Varnish, Shot Blasting

Packing:

  • Inner packing:Caps on two ends of every pipe
  • Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
  • Surface treatment:Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
  • Marking: as per customers requirement

DIN2391-1: Chemical compositions(%)

GradeCSiMnPS
DIN2391 ST35≤0.17≤0.35≥0.40≤0.050≤0.050
DIN2391 ST45≤0.21≤0.35≥0.40≤0.050≤0.050
DIN2391 ST52≤0.22≤0.55≥1.60≤0.050≤0.050

DIN2391-1: Mechanical properties

GradeBKBKWBKSGBKNBK
Rm
N/mm
min
minRm
N/mm
min
minN/
mm
min
ReH
N/mm
min
minN/
mm
min
minN/mm
min
ReH
N/mm
min
min
DIN2391 ST354806420104203151431525340-47023525
DIN2391 ST45580552085203751239021440-57023521
DIN2391 ST52640458075804201049022490-63035522

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