DIN 2609 ST 35-8 Grade Seamless Pipe is a specific specification of seamless steel pipe, which is standardized according to the German Industrial Standard DIN 2609. This seamless pipe belongs to high-quality carbon structural steel, and its chemical composition includes specific contents of elements such as carbon, silicon, and manganese to ensure its mechanical properties and corrosion resistance.
DIN 2609 ST 35-8 pipes have a yield strength of at least 360MPa and a minimum tensile strength of 480MPa.
DIN 2609 Gr ST 35-8 pipes are available in different diameters and wall thicknesses. There are also welded pipes and seamless, round, hydraulic, rectangular, square and other types of pipes. Each pipe type is used differently in the application. It is usually used in high-pressure and high-temperature environments such as boilers and pressure vessels.
Products Data
Chemical Composition of DIN 2609 Grade St35-8 ERW Pipe
| Element | Content Range (%) |
|---|---|
| Carbon (C) | 0.17 |
| Silicon (Si) | 0.10 - 0.35 |
| Manganese (Mn) | 0.4 - 0.8 |
| Phosphorus (P) | ≤ 0.02 |
| Sulphur (S) | ≤ 0.025 |
Mechanical properties of DIN2609 ST35-8 grade heat exchanger tubes
| roperty | Range/Value |
|---|---|
| Tensile Strength (MPa) | 360 - 480 |
| Yield Strength (MPa) | ≥ 225 - 235 |
| Elongation (%) | ≥ 25 |
Wall thickness of DIN 2609 Gr ST 35-8 Pipe
| Outer diameter and wall Thickness | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Execution | Size Range | OD Tolerance | Wall tolerance | ||||||
| Hot-rolled Tube | OD – 80 mmOD > 80 mmWall < 12 mmWall - 12 mm | ± 0.4 mm± 0.5 % of OD | ± 0.7 mm± (5 % x wallthickness + 0.1 mm | ||||||
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DIN 2609 St35-8 Carbon Steel Tubes
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