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Seamless Nickel and Nickel Alloy Tubes for Condensers and Heat Exchangers - China Suppliers and Factory
Referenced Documents
- Key standards:
- ASTM B751 — General requirements for nickel alloy tubes
- ASTM E8/E8M — Tensile testing
- ASTM E29 — Rounding test data
Ordering Information
Buyers must specify:
- ASTM designation (B163 or B163M) and year of issue
- Alloy UNS number (e.g., N06690)
- Dimensions (OD, wall thickness, length)
- Quantity (total length or number of tubes)
- Certification / Test Reports (if required)
- Special Requirements (e.g., hydrostatic testing, non-destructive examination)
Material and Chemical Composition
- UNS Alloy Codes — Common grades include:
- Pure Nickel: N02200, N02201
- Nickel-Copper: N04400
- Nickel-Chromium-Iron: N06600, N06690
- Chemical Limits — Strict adherence to composition ranges (e.g., Ni, Cu, Fe, Cr) per ASTM B163 tables
Mechanical Properties
- Tensile Strength, Yield Strength, Elongation — Varies by alloy (e.g., N06600: min. tensile 80 ksi [550 MPa])
- Hardness Requirements — Optional, if specified
- Hydrostatic Testing — Mandatory unless waived; pressure calculated per standard formulas
Inspection and Testing
- Chemical Analysis — Performed on each heat/lot
- Mechanical Tests — Tensile tests on samples from finished tubes
- Non-Destructive Testing (NDT) — Eddy current or ultrasonic testing optional unless specified
- Visual Inspection — Surface defects must not exceed specified limits
- Certification — Manufacturer must provide compliance certification if requested
Dimensions and Tolerances
- Outside Diameter (OD) — ±0.005 in. or ±0.13 mm for precision tubes
- Wall Thickness — ±10% typical (varies by size)
- Length — ±1/8 in. for cut lengths; longer tolerances for uncut tubes
Marking and Packaging
- Marking — Includes ASTM standard, alloy UNS, heat number, size, and manufacturer's ID
- Packaging — Protected against damage during shipment (e.g., wooden crates for long tubes)
Keywords
Nickel alloy tubes · Seamless tubes · Condensers · Heat exchangers · Corrosion-resistant · High-temperature service
Material Codes (UNS) in ASTM B163/B163M
The ASTM B163/B163M standard covers seamless nickel and nickel alloy tubes for condenser and heat-exchanger applications. Below is a list of the material codes (UNS numbers) included in the latest version of the standard, along with their corresponding alloy names:
| UNS Number | Alloy Name / Common Designation | Primary Composition |
|---|---|---|
| N02200 | Nickel 200 | 99.6% min. Nickel (Ni) |
| N02201 | Nickel 201 (low-carbon Nickel 200) | 99.6% min. Ni, low carbon |
| N04400 | Monel 400 | Ni-Cu (66% Ni, 31.5% Cu) |
| N06600 | Inconel 600 | Ni-Cr-Fe (72% Ni, 15% Cr) |
| N06601 | Inconel 601 | Ni-Cr-Fe (61% Ni, 23% Cr) |
| N06603 | Inconel 603GT | Ni-Cr-Fe with Al & Ti |
| N06690 | Inconel 690 | Ni-Cr-Fe (60% Ni, 30% Cr) |
| N08800 | Incoloy 800 | Fe-Ni-Cr (32% Ni, 21% Cr) |
| N08810 | Incoloy 800H | High-carbon Incoloy 800 |
| N08811 | Incoloy 800HT | Thermally treated 800H |
| N08825 | Incoloy 825 | Ni-Fe-Cr-Mo-Cu (42% Ni, 21.5% Cr) |
| N10276 | Hastelloy C-276 | Ni-Mo-Cr (57% Ni, 16% Mo, 15% Cr) |
Notes:
1. UNS (Unified Numbering System) codes are standardized alloy identifiers.
2. Common Trade Names: Some alloys are widely known by commercial names (e.g., Monel, Inconel, Incoloy).
3. Chemical & Mechanical Properties: Each alloy has specific requirements for composition, tensile strength, and corrosion resistance, detailed in ASTM B163/B163M tables.
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❓ Frequently Asked Questions (FAQ)
Q1 What is ASTM B163/B163M and what does it cover?
ASTM B163/B163M is the Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes. It defines requirements for chemical composition, mechanical properties, dimensions, tolerances, inspection, testing, marking, and packaging for seamless tubes used in condenser and heat-exchanger applications.
Q2 Which alloy grades are included in ASTM B163/B163M?
The standard covers a range of nickel and nickel alloy grades identified by UNS numbers, including N02200 (Nickel 200), N02201 (Nickel 201), N04400 (Monel 400), N06600 (Inconel 600), N06690 (Inconel 690), N08800 (Incoloy 800), N08825 (Incoloy 825), N10276 (Hastelloy C-276), and several others.
Q3 What information must buyers provide when ordering ASTM B163 tubes?
Buyers must specify the ASTM designation and year of issue, the alloy UNS number, dimensions (OD, wall thickness, length), quantity, and whether certification/test reports or special requirements such as hydrostatic testing or non-destructive examination are needed.
Q4 What are the dimensional tolerances for ASTM B163 seamless tubes?
For precision tubes, the outside diameter tolerance is ±0.005 in. (±0.13 mm). Wall thickness tolerance is typically ±10% (varies by size). Length tolerance is ±1/8 in. for cut lengths, with longer tolerances applying to uncut tubes.
Q5 Is hydrostatic testing mandatory for ASTM B163 tubes?
Yes, hydrostatic testing is mandatory under ASTM B163 unless specifically waived by the purchaser. The test pressure is calculated using standard formulas defined within the specification to ensure tube integrity under operating conditions.
Q6 What non-destructive testing (NDT) methods are applicable to ASTM B163 tubes?
Eddy current testing and ultrasonic testing are the primary NDT methods applicable to ASTM B163 seamless tubes. These methods are optional unless specifically required by the purchaser in the order. Chemical analysis and mechanical tensile tests are performed as standard requirements on each heat or lot.