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ASTM B167 Nickel Alloy Pipe & Tube Specification
What is ASTM B167?
ASTM B167 (ASME SB167) is the standard specification for seamless nickel chromium iron alloy pipes and tubes intended for high-temperature corrosive and pressure applications. The specification defines the manufacturing process chemical composition mechanical properties dimensions heat treatment testing and inspection requirements to ensure consistent quality durability and reliable performance in demanding industrial environments.
ASTM B167 covers seamless pipes and tubes manufactured from high-performance nickel alloys including Alloy 600 Alloy 601 Alloy 625 Alloy 800 Alloy 800H Alloy 800HT and Alloy 690 depending on the applicable material designation. These alloys provide exceptional resistance to oxidation corrosion carburization and elevated temperatures making them suitable for severe service conditions.
ASTM B167 seamless nickel alloy pipes and tubes are widely used in oil and gas petrochemical chemical processing power generation heat treatment aerospace marine nuclear and pollution control industries. Kamal Steels supplies ASTM B167 pipes and tubes in various nickel alloy grades sizes wall thicknesses and lengths with Mill Test Certificates (EN 10204 3.1) third-party inspection and customized project requirements for domestic and international applications.
ASTM B167 Nickel Alloy Pipe & Tube Specification
ASTM B167 covers seamless nickel alloy pipes and tubes designed to withstand severe operating conditions including high temperatures, corrosive chemicals, seawater exposure and extreme pressure environments. These products are manufactured according to strict quality requirements to ensure reliable industrial performance.
| Specification | Details |
|---|---|
| Standard | ASTM B167 / ASME SB167 |
| Product Type | Seamless Pipe & Tube |
| Material | Nickel-Chromium and Nickel Alloy |
| Manufacturing Process | Seamless |
| Size Range | 1/8" NB to 24" NB |
| Length | Single Random, Double Random & Cut Length |
| End Type | Plain End, Bevel End & Threaded End |
ASTM B167 Pipe Grades
| ASTM B167 Grade | Typical Application / Features |
|---|---|
| Inconel 600 | General-purpose nickel alloy offering excellent corrosion resistance and high-temperature strength. |
| Inconel 601 | Provides outstanding oxidation resistance and excellent performance in elevated-temperature environments. |
| Inconel 625 | Offers exceptional corrosion resistance in aggressive chemical, marine and offshore applications. |
| Inconel 690 | Designed for high-temperature oxidizing service and stress corrosion resistance. |
| Nickel Alloy 800 | Provides excellent strength and oxidation resistance for high-temperature industrial service. |
| Nickel Alloy 800H | Enhanced creep and rupture strength for prolonged exposure to elevated temperatures. |
| Nickel Alloy 800HT | Optimized for superior high-temperature performance and long-term structural stability. |
Types of ASTM B167 Pipes & Tubes
| Product Type | Typical Application / Features |
|---|---|
| ASTM B167 Seamless Pipe | Designed for high-pressure and corrosive service in demanding industrial applications. |
| ASTM B167 Seamless Tube | Widely used in heat exchangers, condensers, boilers and process systems requiring efficient heat transfer. |
| ASTM B167 Nickel Alloy Pipe | Suitable for general industrial service where excellent corrosion resistance and durability are required. |
| ASTM B167 Inconel Pipe | Provides exceptional strength and corrosion resistance in high-temperature and aggressive chemical environments. |
| ASTM B167 Heat Resistant Tube | Engineered for furnaces, thermal processing equipment and elevated-temperature applications. |
| ASTM B167 High Temperature Pipe | Designed to maintain mechanical strength and oxidation resistance during continuous high-temperature service. |
ASTM B167 Chemical Composition
The chemical composition of ASTM B167 seamless nickel alloy pipes and tubes varies depending on the alloy grade. The table below summarizes the principal alloying elements of commonly supplied grades.
| Grade | Nickel (Ni) | Chromium (Cr) | Iron (Fe) |
|---|---|---|---|
| Inconel 600 | 72.0% Min | 14.0–17.0% | 6.0–10.0% |
| Inconel 601 | 58.0–63.0% | 21.0–25.0% | Balance |
| Inconel 625 | 58.0% Min | 20.0–23.0% | 5.0% Max |
| Inconel 690 | 58.0% Min | 27.0–31.0% | 7.0–11.0% |
| Alloy 800 / 800H / 800HT | 30.0–35.0% | 19.0–23.0% | 39.5% Min |
Note: Values shown are the principal alloying elements for commonly supplied ASTM B167 grades. Refer to the applicable material specification for complete chemical composition requirements.
ASTM B167 Mechanical Properties
ASTM B167 seamless nickel alloy pipes and tubes are manufactured to meet specified mechanical property requirements for high-temperature and corrosion-resistant applications.
| Grade | Tensile Strength (Min MPa) | Yield Strength (Min MPa) | Elongation (Min %) |
|---|---|---|---|
| Inconel 600 | 550 | 240 | 30 |
| Inconel 601 | 550 | 205 | 30 |
| Inconel 625 | 827 | 414 | 30 |
| Inconel 690 | 586 | 241 | 30 |
| Alloy 800 / 800H / 800HT | 520 | 205 | 30 |
Note: Mechanical property values shown are typical minimum requirements for annealed ASTM B167 seamless nickel alloy pipes and tubes. Requirements may vary depending on the specific alloy grade, product dimensions and applicable ASTM specification.
Equivalent Grades
| Alloy Grade | UNS Number | Werkstoff No. |
|---|---|---|
| Inconel 600 | N06600 | 2.4816 |
| Inconel 601 | N06601 | 2.4851 |
| Inconel 625 | N06625 | 2.4856 |
| Inconel 690 | N06690 | 2.4642 |
| Alloy 800 | N08800 | 1.4876 |
| Alloy 800H | N08810 | 1.4958 |
| Alloy 800HT | N08811 | 1.4959 |
Note: The equivalent grade information is provided for reference only. Material selection should always be based on the applicable ASTM specification, project requirements, and service conditions.
ASTM B167 Pipe Size Chart
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Wall Thickness | Standard Length |
|---|---|---|---|
| 1/4" | 13.7 mm | SCH 10S – SCH 160 | 6 Meters |
| 1/2" | 21.3 mm | SCH 10S – SCH 160 | 6 Meters |
| 1" | 33.4 mm | SCH 10S – SCH 160 | 6 Meters |
| 2" | 60.3 mm | SCH 10S – SCH 160 | 6 Meters |
| 4" | 114.3 mm | SCH 10S – SCH 160 | 6 Meters |
| 6" | 168.3 mm | SCH 10S – SCH 160 | 6 Meters |
| 8" | 219.1 mm | SCH 10S – SCH 160 | 6 Meters |
| 10" | 273.0 mm | SCH 10S – SCH 160 | 6 Meters |
| 12" | 323.9 mm | SCH 10S – SCH 160 | 6 Meters |
ASTM B167 Heat Treatment and Testing
| Test / Process | Description |
|---|---|
| Heat Treatment | Solution annealed according to ASTM B167 requirements. |
| Hydrostatic Test | Performed to verify pressure integrity of seamless pipes and tubes. |
| Non-Destructive Testing (NDT) | Eddy current or ultrasonic testing available as per specification. |
| Dimensional Inspection | Checked for OD, wall thickness, length and straightness tolerances. |
| PMI Testing | Positive Material Identification available on customer request. |
| Documentation | Mill Test Certificate (EN 10204 3.1) supplied with every shipment. |
| Third-Party Inspection | SGS, TUV, BV, DNV, Lloyd's and other agencies available upon request. |
ASTM B167 Applications
| Industry | Typical Application |
|---|---|
| Oil & Gas | Process piping and offshore installations. |
| Chemical Processing | Corrosion-resistant piping systems. |
| Petrochemical Plants | High-temperature process lines. |
| Power Generation | Boilers and heat recovery systems. |
| Heat Exchangers | High-performance heat transfer equipment. |
| Marine & Offshore | Seawater handling and offshore structures. |
| Aerospace | High-strength and high-temperature components. |
| Nuclear Industry | Critical piping and pressure systems. |
Advantages of ASTM B167
| Feature | Benefit |
|---|---|
| Excellent Corrosion Resistance | Performs well in highly corrosive environments. |
| High Temperature Strength | Maintains mechanical properties at elevated temperatures. |
| Excellent Oxidation Resistance | Suitable for demanding heat applications. |
| High Mechanical Strength | Reliable performance under high pressure. |
| Excellent Fabricability | Easy to machine, weld and fabricate. |
| Long Service Life | Reduces maintenance and replacement costs. |
| Wide Industrial Acceptance | Used across oil & gas, chemical, marine and power industries. |
| Certified Quality | Supplied with MTC, EN 10204 3.1 and third-party inspection options. |
ASTM B167 is the standard specification for seamless nickel-chromium alloy and nickel-chromium-iron alloy pipes and tubes used in high-temperature and highly corrosive environments.
ASTM B167 covers nickel alloy grades such as Inconel 600, Inconel 601, Inconel 625, Inconel 690 and other nickel-chromium alloys designed for demanding industrial applications.
ASTM B167 pipes and tubes are widely used in chemical processing, petrochemical plants, offshore platforms, power generation, aerospace, marine engineering and heat treatment industries.
ASTM B167 covers seamless nickel alloy pipes and tubes, while ASTM A312 covers austenitic stainless steel pipes. Nickel alloys generally offer superior resistance to extreme temperatures and aggressive corrosive environments.
Yes, ASTM B167 nickel alloy pipes provide excellent oxidation resistance, creep strength and mechanical stability at elevated temperatures, making them suitable for furnace and heat-processing applications.
ASTM B167 products are available in various outside diameters, wall thicknesses and lengths depending on the alloy grade and project requirements.
ASTM B167 pipes offer exceptional corrosion resistance, excellent high-temperature strength, long service life, resistance to oxidation and reliable performance in harsh industrial environments.
Industries including chemical processing, petrochemicals, marine engineering, power plants, aerospace, pollution control systems and offshore projects commonly use ASTM B167 tubes.