ASTM B167 UNS N06045 Nickel Alloy Pipe & Tube
ASTM B167 UNS N06045 is a high-performance nickel-chromium alloy designed for superior corrosion resistance and exceptional stability in high-temperature environments. Known for its resistance to reducing and oxidizing media, Alloy 45 performs reliably in chemical processing, marine engineering, and elevated temperature applications. Pipes and tubes manufactured under ASTM B167 ensure consistent mechanical properties, precision tolerance, and long-term durability across demanding operations.
Key Features
- Exceptional resistance to oxidizing and reducing acids
- High stability and strength at elevated temperatures
- Excellent stress corrosion cracking resistance
- Suitable for highly corrosive chemical and petrochemical environments
- Available in seamless and welded forms
- Superior weldability and formability
- Consistent quality as per ASTM B167 specifications
Equivalent Grades
| Standard | Equivalent |
|---|---|
| UNS | N06045 |
| Trade Name | Alloy 45 |
| Werkstoff | – |
| Other Equivalents | Nickel-Chromium Corrosion-Resistant Alloys |
Available Sizes
- Pipe OD: 6 mm to 914.4 mm
- Tube OD: 3 mm to 600 mm
- Wall Thickness: 0.3 mm to 50 mm+
- Length: SRL, DRL, Cut Lengths up to 13.5 meters
ASTM B167 UNS N06045 Chemical Composition
| Element | % |
|---|---|
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0 – 24.0 |
| Molybdenum (Mo) | 2.0 – 4.0 |
| Iron (Fe) | ≤ 10.0 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.50 |
| Carbon (C) | ≤ 0.08 |
| Sulfur (S) | ≤ 0.015 |
| Others | Trace |
UNS N06045 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 600 – 750 MPa |
| Yield Strength (0.2% Proof) | 250 – 350 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 90 HRB |
Alloy 45 Physical Properties
| Property | Value |
|---|---|
| Density | ~8.1 g/cm³ |
| Melting Point | 1350 – 1400°C |
| Thermal Conductivity | ~11 W/m·K |
| Electrical Resistivity | ~1.1 µΩ·m |
| Specific Heat | 440–460 J/kg·K |
Types ASTM B167 UNS N06045
- Seamless Pipes
- Welded Pipes
- Seamless Tubes
- Welded Tubes
- Annealed / Pickled Tubing
- High-Temperature Service Tubes
Application
- Chemical processing equipment
- Heat exchangers and condensers
- Marine and offshore systems
- Pulp & paper bleaching plants
- High-temperature furnace components
- Petrochemical processing units
- Corrosive gas handling systems
- Pharmaceutical and pollution-control equipment





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