Hastelloy C2000 Nickel Alloy Capillary Tube
Product Introduction
The comprehensive corrosion resistance of the Hastelloy C2000 nickel alloy capillary tube means that the equipment is less at risk and has a longer service life when dealing with changes in process media, making it an ideal choice for handling harsh conditions such as mixed acids and complex waste liquids.
Hastelloy C-2000 seamless capillary tubes are typically manufactured using cold rolling (such as Pilger rolling) or cold drawing processes. Our customers often choose between two standards: ASTM B622 (General Standard for Seamless Tubes), which is the core technical requirement, and ASME SB622, which is required for pressure equipment. Please get in touch with us for a technical specification sheet or a quote.
Procurement Specifications and Industry Standards
Based on our experience, when purchasing Hastelloy C-2000 nickel alloy capillary tubes, the following points should be considered:
Confirm with your engineers the conveying medium, temperature, pressure, and other operating conditions. Hastelloy C-2000 nickel alloy capillary tubes are the best choice for you, rather than other materials.
1. Verify key specifications with us: the outer diameter, wall thickness, length, and tolerances of Hastelloy C-2000. Capillary tube dimensions are precise, and tolerance ranges must be clearly agreed upon (based on ASTM B622). Common supplier supply ranges: outer diameter 6-530mm, wall thickness 0.5-50mm, length 1-12m.
2. Clarify the final delivery condition: For this type of material, we generally supply "solution annealed," which is the baseline condition to guarantee performance. You can also choose different delivery conditions based on your specific operating requirements.
3. Cost and Key Negotiation Points:
In addition to the unit price, clearly define the packaging method (anti-collision), delivery date, and warranty terms for Hastelloy C-2000 alloy. For high-value materials, it is recommended to use wooden crates or dedicated pallets, protective film, etc.
4. Sample Request is Essential: Before bulk purchases, request samples for preliminary inspection of dimensions, spectral composition, and even third-party corrosion testing.
Manufacturing Process and Challenges
Hastelloy C2000 nickel alloy capillary tubes are difficult to produce and process. Whether purchasing raw materials, machining simple parts, or precision-machined parts, the following points should be noted by skilled machining personnel regarding secondary processing:
Secondary Machining Challenges:
Machining Difficulty: Hastelloy C-2000 nickel alloys are difficult to machine. It is recommended to use carbide tools coated with TiAlN or similar materials and ensure sufficient cooling. Speed should not be too high to avoid excessive tool wear due to hardening.
Welding Key Points: These nickel alloy capillaries generally do not require post-weld heat treatment. However, heat input and interpass temperature must be controlled, and matching nickel-based welding materials (such as ERNiCrMo-17) must be used to prevent weld degradation. Stress-relief annealing at around 650°C is strictly prohibited, as this will push it into the "sensitization" temperature range.
For more information, please contact:
Email: susan@lorkgroup.com
WhatsApp: +86 199 3707 5488
Chemical Composition
(ASTM B575 / ASTM B574 requirements) When purchasing, be sure to check whether the range of these critical elements meets the requirements in the Material Reporting Certificate (MTC):
| Weight% | Hastelloy c2000 |
| Ni | Residual component |
| Cr | 22.0 - 24.0 |
| Mo | 15.0 - 17.0 |
| Cu | 1.3 - 1.9 |
| Fe | ≤ 3.0 |
Key point: Ultra-low carbon content (≤0.01%) is crucial, as it minimizes the precipitation of harmful carbides during welding or heat treatment and is the basis for ensuring post-weld resistance to intergranular corrosion.
Mechanical Properties
| Material | (Annealed condition, refer to ASTM B622) |
| Tensile Strength MPa | ≥ 690 MPa |
| Yield Strength MPa | ≥ 283 MPa |
| Reduction of Area % | ≥ 45% |
| Hardness HB | ≤ 200 HB |
Capillary tubes are typically delivered in a solution-annealed state to ensure optimal corrosion resistance and plasticity.
Key points of the quality inspection process
Suppliers must be required to provide a material testing certificate (MTC/CMTR) conforming to EN 10204 3.1 or 3.2.
| Test Category | Core Test Items | Purpose and Explanation |
| Chemical Composition | Nickel and impurity element content | Verify whether the material grade meets the standards. |
| Mechanical Properties | Tensile strength, yield strength, and elongation | Verify whether the material condition and basic properties meet the standards. |
| Non-destructive testing | Eddy current testing (ET) or ultrasonic testing (UT) | Essential for detecting surface and internal defects such as cracks and inclusions in capillaries. |
| Dimensions and Appearance | Outer diameter, wall thickness, ovality, and surface finish of inner and outer surfaces | Use calipers, micrometers, etc. The surface should be acid-washed to a bright finish, free from scratches, folds, and other defects. |
| Corrosion Testing (Optional) | ASTM G28 A Method (Intergranular Corrosion Proneness) | This test is required for critical components used in highly corrosive environments and is the gold standard for evaluating the quality of material heat treatment. |
| Macro/Microstructure | Grain size and inclusion inspection | Assess material purity and heat treatment effectiveness. |
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