DIN 2609 Grade St 44-0 seamless tube is manufactured from high-strength carbon steel, offering excellent yield and tensile properties. The material demonstrates good mechanical stability and resistance to general corrosion, making it suitable for a wide range of industrial applications under demanding service conditions.
DIN 2609 Grade St 44-0 seamless pipes have a minimum yield strength of 420 MPa and a minimum tensile strength of 550 MPa, ensuring reliable performance in pressure-bearing and load-sensitive systems. Below is a general overview of the DIN 2609 Grade St 44-0 seamless tube.
Equivalent Material of ST 44-0 DIN 2609 Seamless Pipe
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Equivalent Designation
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DIN
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EN
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BS
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NFA
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ASTM
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ASME
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DIN 2609 Grade St 44-0
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–
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–
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–
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–
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–
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DIN 2609 Gr ST 44-0 Pipe Wall Thickness
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Outer diameter and wall Thickness
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Execution
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Size Range
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OD Tolerance
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Wall tolerance
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Hot-rolled Tube
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OD – 80 mmOD > 80 mmWall < 12 mmWall - 12 mm
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± 0.4 mm± 0.5 % of OD
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± 0.7 mm± (5 % x wallthickness + 0.1 mm
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Hot-rolled peeled tube
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All sizesWall < 12 mmWall - 12 mm
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+ 0.25/- 0 mm
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± 0.8 mm± (5 % x wall thickness+ 0.2 mm)
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Cold Worked tubecold-rolled or cold-drawn
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OD < 40 mmOD 40 - 80 mmOD > 80 Wall Thickness< 6 mm Wall Thickness6 - 8 mm Wall Thickness > 8
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+ 0.30/- 0 mm*+ 0.35/- 0 mm*+ 0.40/- 0 mm*
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± 0.30 mm± 0.35 mm± 0.40 mm
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Dimensional Tolerances of DIN 2609 Grade St 44-0
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Component length (mm)
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OD 30-100 mm
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OD 100-254 mm
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10-100
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+ 1.0/- 0
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+ 2.0/- 0
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100-600
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+ 2.0/- 0
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+ 3.0/- 0
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600-1200
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+ 3.0/- 0
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+ 4.0/- 0
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1200-5000
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+ 5.0/- 0
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+ 6.0/- 0
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DIN 2609 Gr. ST 44-0 Seamless Pipe Chemical Element
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Chemical Properties
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Carbon
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Silicon
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Manganese
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Phosphorous
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Sulphur
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Molybdenum
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Nickel
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Chromium
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Copper
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Others
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max 0.21
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–
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–
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0.04
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0.04
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–
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–
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–
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–
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–
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DIN 2609 Gr St44 Pipe Mechanical Properties
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Mechanical Properties
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Yield Strength
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Tensile Strength
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Elongation A5 min
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MPa min
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ksi min
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MPa min
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MPa min
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ksi min
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Percentage
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420
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550
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–
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21
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