DIN 17175 ST35.8 unalloyed (usually referred to as "carbon steel" in a broad sense for such standards, but technically "unalloyed" here means low-carbon steel without intentional alloying beyond trace elements) tube is a type of seamless steel tube specified by the German standard DIN 17175.
Properties:
The tubes exhibit good mechanical strength, heat resistance, and corrosion resistance, making them reliable for long-term use in demanding conditions.
They have a smooth surface finish and uniform wall thickness, ensuring efficient heat transfer and fluid flow.
Applications:
These tubes are widely used in high-pressure and high-temperature environments, such as in boilers, superheaters, heat exchangers, and other thermal equipment.
They are suitable for conveying steam, water, and other fluids under pressure in industrial settings.
ST35.8 Boiler Tube chemical composition
| Grade | Carbon | Silicone | Manganese | Phosphorus | Sulfur |
|---|---|---|---|---|---|
| St 35.8 | ≤0.17 | 0.10-0.35 | 0.40-0.80 | ≤0.040 | ≤0.040 |
DIN 17175 ST35.8 Condenser Tube mechanical properties
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|---|
| St 35.8 | 360-480 | ≥235 | ≥25 |
Physical properties of ST35.8 Tubing
| Density | Melting Point |
|---|---|
| 7.85 g/cm³ | 1420-1460°C (2590-2660°F) |
Test and inspection
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