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Bright Anneal Hastelloy C276 Pipe Tube Diameter 6mm 8mm 10mm 12mm 14mm 15mm
| Herkunftsort | China |
|---|---|
| Markenname | DELTA |
| Zertifizierung | ISO |
| Modellnummer | Hastelloy C276 |
| Min Bestellmenge | 10 kg |
| Preis | 40 - 50 USD/Kg |
| Verpackung Informationen | Standardverpackung für den Exportieren |
| Lieferzeit | 5 - 12 Tage basierend auf der Menge |
| Zahlungsbedingungen | L/C, T/T, Western Union |
| Versorgungsmaterial-Fähigkeit | 3 Tonnen pro Woche |
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xProduktdetails
| Produkte | Hastelloy C276 Pipes | Grad | Hastelloy C276 |
|---|---|---|---|
| Durchmesser | 6 - 219 mm | Länge | Auf Wunsch beliebige Schnittlängen |
| Standards | ASTM EN | Dienstleistung | Schneiden |
| Ladeanschluss | Shanghai Hafen | Oberfläche | Hell |
Produkt-Beschreibung
Bright Anneal Hastelloy C276 Pipe Tube Diameter 6mm 8mm 10mm 12mm 14mm 15mm
More Specification Informations
| Products Name | Hastelloy C276 pipes |
| Diameter | 6.0 - 219mm |
| Thickness | 0.6 - 10.0mm |
| Length | custom cutting any length as request |
| Surface | bright |
| Brand | DELTA |
| Service | cutting, Polishing |
| MOQ | 2 Kgs |
| Other Type | round bar, strip,coil,pipe.sheet, plate,wire.etc |
| Packing | waterproof paper and wooden pallets, wooden box |
| Loading Port | Shanghai Port |
| Price term | EXW,FOB,CIF,CFR |
| Deliver time | within 12 days |
Bright Anneal Hastelloy C276 Pipe Tube Diameter 6mm 8mm 10mm 12mm 14mm 15mm
Hastelloy C276 bright anneal pipe tubes (with diameters of 6mm, 8mm, 10mm, 12mm, 14mm, and 15mm) are high-performance nickel-chromium-molybdenum alloy tubes renowned for their exceptional corrosion resistance, mechanical stability, and smooth surface finish. Engineered for harsh industrial environments, these tubes combine the inherent durability of Hastelloy C276 with the precision of bright annealing, making them a top choice for critical applications across sectors like chemical processing, energy, and pharmaceuticals.
1. Core Chemical Composition (Hastelloy C276 Alloy)
The superior performance of these tubes stems from their carefully balanced chemical composition, which is standardized to ensure consistency and corrosion resistance. The key components (by weight) are as follows:
| Element | Content Range | Function |
|---|---|---|
| Nickel (Ni) | ≥ 57% | Base metal; provides structural stability and resistance to chloride stress corrosion cracking. |
| Chromium (Cr) | 14.5 - 16.5% | Enhances oxidation resistance at high temperatures and protects against acidic environments. |
| Molybdenum (Mo) | 15 - 17% | Critical for resistance to pitting, crevice corrosion, and attack by strong reducing acids (e.g., sulfuric acid). |
| Tungsten (W) | 3 - 4% | Complements molybdenum to boost resistance to localized corrosion in chloride-rich media. |
| Iron (Fe) | 4 - 7% | Improves mechanical strength and fabricability without compromising corrosion resistance. |
| Carbon (C) | ≤ 0.01% | Minimized to prevent carbide precipitation (which can weaken corrosion resistance at high temperatures). |
| Silicon (Si) | ≤ 0.08% | Reduces impurities and enhances surface quality post-annealing. |
| Manganese (Mn) | ≤ 1% | Aids in alloy melting and casting without adverse effects on performance. |
2. Key Mechanical & Dimensional Parameters
2.1 Dimensional Specifications (Target Diameters)
The tubes are precision-manufactured to the following outer diameter (OD) and typical inner diameter (ID) ranges (wall thickness optimized for strength and flow):
| Outer Diameter (OD) | Typical Inner Diameter (ID) | Typical Wall Thickness |
|---|---|---|
| 6mm | 4.0 - 4.5mm | 0.75 - 1.0mm |
| 8mm | 5.5 - 6.0mm | 1.0 - 1.25mm |
| 10mm | 7.0 - 7.5mm | 1.25 - 1.5mm |
| 12mm | 8.5 - 9.0mm | 1.5 - 1.75mm |
| 14mm | 10.0 - 10.5mm | 1.75 - 2.0mm |
| 15mm | 10.8 - 11.3mm | 1.85 - 2.1mm |
Note: Dimensional tolerances comply with ASTM/ASME standards (±0.05mm for OD, ±0.1mm for ID).
2.2 Mechanical Properties (Post Bright Annealing)
Bright annealing refines the alloy’s microstructure, resulting in excellent ductility and strength for forming and installation:
- Tensile Strength: 690 - 790 MPa
- Yield Strength (0.2% Offset): 275 - 310 MPa
- Elongation (in 50mm): ≥ 40%
- Hardness (Rockwell B): ≤ 95
3. Manufacturing Standards & Quality Certifications
To ensure reliability and compatibility with global industrial requirements, these tubes adhere to strict international standards:
| Standard Organization | Key Standards | Scope of Compliance |
|---|---|---|
| ASTM International | ASTM B622 | Specification for seamless Hastelloy C276 tubes (chemical composition, mechanical properties, dimensions). |
| ASME | ASME SB622 | Boiler and pressure vessel code-compliant version of ASTM B622 (for high-pressure applications). |
| ISO | ISO 6208 | Tolerances for seamless nickel-alloy tubes (dimensional accuracy). |
| DIN (Germany) | DIN 17752 | Supplementary standard for nickel-chromium-molybdenum alloy tubes (surface finish, testing). |
Quality Certifications: All tubes undergo 100% non-destructive testing (NDT) and come with:
- Mill Test Certificates (MTC) per EN 10204 3.1.B (verifying chemical composition, mechanical properties, and dimensional checks).
- Surface finish certification (Ra ≤ 0.8 μm, confirmed via profilometer testing).
- Pressure testing (hydrostatic test at 1.5x design pressure) to ensure leak tightness.
4. Bright Annealing Process: How It Enhances Performance
Bright annealing is a critical heat-treatment step that differentiates these tubes from standard annealed products. It is performed in a controlled, oxygen-free atmosphere (e.g., pure hydrogen or argon) to avoid oxidation, resulting in a smooth, reflective surface and optimized material properties. The process steps are as follows:
- Pre-Cleaning: Tubes are degreased and pickled (with dilute nitric acid) to remove surface contaminants (oil, oxides) that could impair annealing.
- Atmosphere Control: Tubes are loaded into a sealed furnace flushed with inert gas (oxygen content < 10 ppm) to prevent oxidation.
- Heating & Soaking: Furnace temperature is raised to 1050 - 1100°C and held for 30 - 60 minutes (depending on wall thickness) to soften the alloy and dissolve any residual carbides.
- Rapid Cooling: Tubes are quenched in an inert gas stream (cooling rate > 50°C/min) to lock in a uniform, non-carbide-precipitated microstructure—critical for corrosion resistance.
- Post-Annealing Finishing: A light mechanical polish (if needed) ensures a consistent bright surface (Ra ≤ 0.8 μm) and removes any minor surface imperfections.
5. Applications: Where Bright Anneal Hastelloy C276 Tubes Excel
The combination of small diameters (6mm - 15mm), bright surface, and Hastelloy C276’s corrosion resistance makes these tubes ideal for precision fluid handling in aggressive environments. Key applications include:
- Chemical Processing: Transfer lines for strong acids (sulfuric, hydrochloric), chlorinated solvents, and reactive intermediates (e.g., in pharmaceutical API synthesis).
- Petrochemical & Oil/Gas: Downhole sampling tubes, offshore platform instrumentation lines, and refinery catalyst regeneration systems (resists sour gas and chloride corrosion).
- Pharmaceuticals & Food Processing: Sanitary fluid lines (bright surface prevents bacterial fouling) for drug formulations, sterile water, and acidic food products (e.g., citrus juices).
- Energy (Nuclear & Solar): Heat exchanger tubes in nuclear power plants (resists radiation-induced corrosion) and concentrated solar power (CSP) systems (handles high-temperature heat transfer fluids).
- Environmental Engineering: Flue gas desulfurization (FGD) systems, wastewater treatment lines for heavy metal-laden effluents, and acid recovery units.
6. Key Advantages Over Other Alloy Tubes
- Superior Corrosion Resistance: Outperforms 316L stainless steel and Inconel 625 in chloride-rich and reducing acid environments (e.g., no pitting in 10% sulfuric acid at 60°C).
- Bright, Low-Maintenance Surface: The reflective finish eliminates the need for post-installation polishing and reduces particle accumulation (critical for cleanroom/pharmaceutical use).
- Dimensional Precision: Tight tolerances on small diameters (6mm - 15mm) enable compatibility with miniaturized equipment (e.g., lab-scale reactors, medical devices).
- High-Temperature Stability: Maintains mechanical strength and corrosion resistance up to 1000°C (suitable for high-heat industrial processes).
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