Seamless Steel Pipe
ASTM B161 Nickel Seamless Pipe & Tube
ASTM B161 is a globally recognized specification for seamless Nickel (Commercially Pure Nickel) pipes and tubes, primarily covering Nickel 200 (UNS N02200) and Nickel 201 (UNS N02201). These grades are known for their excellent corrosion resistance, outstanding thermal and electrical conductivity, and superior performance in alkaline, neutral, and reducing media.
Nickel seamless pipes and tubes manufactured under ASTM B161 are widely used in chemical processing, marine engineering, petrochemicals, heat exchangers, and high-temperature applications where purity and corrosion resistance are critical.
Key Features
Excellent resistance to caustic alkalis, acids, and neutral salts
Outstanding thermal and electrical conductivity
High ductility and formability
Exceptional resistance to stress corrosion cracking
Superior performance in high-temperature and high-pressure applications
Suitable for deep-drawing, spinning, and fabrication processes
Grades Covered
Nickel 200 – UNS N02200 (Commercially Pure Nickel, low carbon)
Nickel 201 – UNS N02201 (Low-carbon modification for elevated temperatures)
Specification
| Specification | Details |
|---|---|
| Standard | ASTM B161 |
| Material | Nickel 200 (UNS N02200), Nickel 201 (UNS N02201) |
| Product Form | Seamless Pipe & Seamless Tube |
| Manufacturing Type | Cold-drawn or hot-finished seamless |
| Size Range | OD: 6 mm to 219 mm | WT: 0.5 mm to 20 mm (custom on request) |
| Length | Single Random, Double Random, Cut-to-Length |
| Condition | Annealed (Soft), Stress Relieved, Hard-drawn |
| Finish | Bright Annealed, Polished, Pickled |
| End Types | Plain End, Bevelled End, Threaded |
| Tolerances | As per ASTM B161 requirements |
| Applications | Chemical plants, heat exchangers, condensers, marine equipment, alkali processing |
ASTM B161 Chemical Composition
| Element | Nickel 200 (%) | Nickel 201 (%) |
|---|---|---|
| Nickel (Ni) | 99.0 min | 99.0 min |
| Carbon (C) | 0.15 max | 0.02 max |
| Manganese (Mn) | 0.35 max | 0.35 max |
| Silicon (Si) | 0.35 max | 0.35 max |
| Sulfur (S) | 0.01 max | 0.01 max |
| Copper (Cu) | 0.25 max | 0.25 max |
| Iron (Fe) | 0.40 max | 0.40 max |
ASTM B161 Mechanical Properties
| Property | Nickel 200 | Nickel 201 |
|---|---|---|
| Tensile Strength (MPa) | 380 min | 370 min |
| Yield Strength (MPa) | 100 min | 100 min |
| Elongation (%) | 40 min | 40 min |
| Hardness | Rb 55 max | Rb 55 max |
Available Sizes
Outside Diameter: 6 mm to 450 mm
Wall Thickness: 0.5 mm to 50 mm
Length: Single Random, Double Random, Cut-to-Length
Forms: Round, Hydraulic, Hollow, Heat Exchanger Tubes
Types of ASTM B161 Nickel Pipes & Tubes
Nickel Seamless Pipes
Nickel Seamless Tubes
Nickel Heat Exchanger Tubes
Nickel Condenser Tubes
Nickel High-Temperature Pipes
Nickel Instrumentation Tubes
Nickel Boiler & Superheater Tubes
Applications
ASTM B161 Nickel Pipes & Tubes are widely used in:
Chemical and Petrochemical Processing
Caustic Alkali Manufacturing Plants
Marine & Offshore Engineering
Heat Exchangers & Condensers
Power Generation Industry
Gas Processing & Refining Units
Aerospace Components
Food Processing Equipment
Nuclear Engineering Applications