Top Manufacturer of SA-240/SB-688, A240/B 688 Stainless Steel Tubes in China
High-performance SA-240/SB-688, A240/B 688 stainless steel heat exchanger tubes, engineered for exceptional durability, corrosion resistance, and thermal efficiency. Ideal for industrial applications, these precision-crafted tubes ensure reliable performance in demanding environments, meeting stringent quality standards for heat transfer and fluid flow optimization.
SA-240/SB-688, A240/B 688 Stainless Steel Heat Exchanger Tube - Detailed Specifications
| Parameter | Details |
|---|---|
| Grade | N08904 / 1.4539 |
| Material | Austenitic Stainless Steel |
| Temperature Range | -50°C to 300°C |
| Corrosion Resistance | Excellent |
| Tensile Strength | ≥ 520 MPa |
| Yield Strength | ≥ 220 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 230 HBW |
| Surface Finish | Polished or Mill Finish |
| Tube Dimensions | OD 6mm - 250mm; Thickness 1mm - 20mm |
| Applications | Chemical Processing, Power Plants, Desalination Systems |
Understanding the Standard: ASTM A240 / ASME SA-240
What It Is:
SA-240/SB-688, A240/B 688 defines stainless steel standards for heat exchanger tubes.
- Specifies chromium, molybdenum, nitrogen levels.
- Requires PREN over 40 for pitting resistance.
- Mandates controlled heat treatment.
- Ensures austenite-ferrite balance for strength.
- Serves as raw material master document.
Why It Is Your Core Focus:
SA-240/SB-688, A240/B 688 ensures top performance and reliability in harsh environments.
- Guarantees exceptional performance in hot seawater.
- Ensures ultra-high mechanical strength for deep-sea use.
- Provides certified proof of compliance.
- Ensures material integrity for peace of mind.
SA-240/SB-688, A240/B 688 Stainless Steel Material Properties
| Element | Percentage (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 18.00 - 20.00 |
| Nickel (Ni) | 8.00 - 11.00 |
| Nitrogen (N) | ≤ 0.10 |
| Molybdenum (Mo) | Optional (Trace Levels) |
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 515 | MPa |
| Yield Strength | ≥ 205 | MPa |
| Elongation | ≥ 40 | % |
| Hardness (Brinell) | ≤ 217 | HBW |
| Density | ~7.9 | g/cm³ |
| Thermal Conductivity | ~16.2 | W/m·K |
| Maximum Working Temp | ~870 | °C |
Applications of SA-240/SB-688, A240/B 688 Stainless Steel Heat Exchanger Tube
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For uncompromising durability and superior corrosion resistance in extreme conditions, choose our SA-240/SB-688, A240/B 688 Stainless Steel Heat Exchanger Tube. Designed for maximum reliability and efficiency, it offers unparalleled performance under the harshest pressures and environments. Contact our team for your custom solution today!
