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High-Quality Nickel-Chromium-Iron Alloys Seamless Pipe & Tube from China Suppliers and Factory
Ordering Information
Buyers must specify the following when placing an order:
- ASTM designation (B167 or B167M for metric)
- Alloy UNS number (e.g., N06600)
- Dimensions (OD, wall thickness, length)
- Condition (annealed, cold-worked, etc.)
- Test requirements (if additional to standard)
- Certification (if needed)
- Special packaging (if required)
Material Codes (UNS Alloys)
Common alloys covered under ASTM B167/B167M:
| # | UNS Code | Alloy Type / Description |
|---|---|---|
| 1 | N06025 | Ni-Cr-Fe-Mo-Cu alloy |
| 2 | N06045 | Ni-Cr-Fe-Si alloy |
| 3 | N06600 | Nickel-Chromium-Iron, general-purpose alloy |
| 4 | N06601 | Nickel-Chromium-Iron, improved high-temperature strength |
| 5 | N06603 | Nickel-Chromium-Iron, oxidation-resistant |
| 6 | N06690 | Nickel-Chromium-Iron, low-carbon, corrosion-resistant |
| 7 | N06693 | Nickel-Chromium-Iron-Aluminum, high-temperature resistant |
Chemical Composition
- Limits for Ni, Cr, Fe, C, Mn, Si, Cu, S, and other trace elements are specified for each alloy.
- Material analysis must conform to ASTM E1473 or equivalent.
Mechanical Properties
- Tensile strength, yield strength, and elongation requirements vary by alloy and condition (annealed / cold-worked).
📌 Example — N06600 (Annealed Condition):
🔹 Tensile Strength: ≥ 80 ksi (550 MPa)
🔹 Yield Strength: ≥ 35 ksi (240 MPa)
🔹 Elongation: ≥ 30%
Inspection & Testing Requirements
- Chemical analysis (per heat/lot)
- Tensile testing (per lot)
- Hydrostatic or nondestructive testing (e.g., eddy current) for leaks/defects
- Dimensions and visual inspection (surface defects, straightness)
- Certification: Mill test reports (MTRs) must comply with the standard
Surface Finish & Dimensions
- Surfaces must be free of scale, cracks, and imperfections.
- Dimensional tolerances for OD, wall thickness, and length are specified.
Certification & Marking
- Marking must include: ASTM standard, alloy, heat number, size, and manufacturer's identification.
- Certification: Supplier must provide compliance documentation.
Keywords
Nickel Alloys
Seamless Pipe
Corrosion-Resistant
High-Temperature
UNS N06600
UNS N06690
ASTM B167
ASTM B167M
⭐ Key Notes:
🔩
N06600 is the most common alloy in this standard, widely used in high-temperature and corrosive environments.
⚛️
N06690 is often used in nuclear applications due to its low carbon content.
🔥
N06601 & N06693 offer enhanced oxidation resistance at elevated temperatures.
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Frequently Asked Questions (FAQ)
What is ASTM B167 / B167M?
ASTM B167 / B167M is the Standard Specification for Nickel-Chromium-Iron Alloy Seamless Pipe and Tube. It covers seamless pipe and tube products manufactured from nickel-chromium-iron alloys such as UNS N06600, N06601, N06603, N06690, N06693, N06025, and N06045.
Which alloy is most commonly used under ASTM B167?
UNS N06600 (Inconel 600) is the most widely used alloy under ASTM B167. It is a general-purpose Nickel-Chromium-Iron alloy known for excellent performance in high-temperature and corrosive environments.
What mechanical properties are required for N06600 in annealed condition?
For N06600 in the annealed condition, ASTM B167 requires a minimum tensile strength of 80 ksi (550 MPa), a minimum yield strength of 35 ksi (240 MPa), and a minimum elongation of 30%.
What testing is required for ASTM B167 pipe and tube?
Required testing includes chemical analysis per heat/lot, tensile testing per lot, hydrostatic or nondestructive testing (such as eddy current testing) for leaks and defects, as well as dimensional and visual inspection for surface quality and straightness.
Why is UNS N06690 preferred for nuclear applications?
UNS N06690 features a low carbon content, which significantly reduces the risk of sensitization and intergranular corrosion. This makes it highly suitable for nuclear steam generator tubing and other nuclear industry applications where corrosion resistance is critical.
What information must be provided when ordering ASTM B167 pipe or tube?
When placing an order, buyers must specify the ASTM designation (B167 or B167M), the alloy UNS number, required dimensions (OD, wall thickness, length), material condition (e.g., annealed or cold-worked), any additional test requirements, certification needs, and any special packaging requirements.