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Material: Hastelloy C4, C22, C276, C2000, B2, B3, G30, X
Type: Seamless/Welded/SAW/ERW/EFW Pipe
Thickness: SCH5~SCHXXS
Size: 1/2" to 48"
End: Beveled End,Plain End
Production: Hot rolling / Hot work / Cold rolling / Cold-drawn
Hastelloy is a family of nickel-molybdenum-chromium alloys (nickel-based, 40-75% Ni) that offer superior corrosion resistance and high-temperature strength. Hastelloy steel pipes are used in the most demanding chemical processing, oil & gas, and pollution control applications. Jinie Technology supplies a comprehensive range of Hastelloy pipes and tubes:
Type | Seamless/Welded/SAW/ERW/EFW Pipe | |
End | BE (Beveled End) | |
Size | OD: 1/2"-48" | |
Manufacturing Technique | Hot rolling / Hot work / Cold rolling / Cold-drawn | |
Producing Standard | ASME B36.10 and ASME B36.19 | |
Hastelloy Steel Grades | ASTM B474 | UNS NO6002/Hastelloy X, UNS N06022/ Hastelloy C22, UNS N10276/Hasteloy C276, UNS N10665 Hastelloy B2, UNS N10675/Hastelloy B3 |
ASTM B622 | UNS N10665/Hastellby B2, UNS N10675/Hastelloy B3,UNS N06200/C2000, UNSN10276/C276, UNS N06002/ Hastelloy-X | |
1. Superior Corrosion Resistance: Nickel provides exceptional resistance to hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid, chlorine gas, and seawater. Molybdenum enhances resistance to pitting and crevice corrosion. Chromium adds oxidation resistance at elevated temperatures.
2. High-Temperature Performance: Hastelloy alloys maintain mechanical strength at temperatures up to 1095°C, significantly outperforming austenitic stainless steels. They resist creep, oxidation, and thermal fatigue.
3. Structural Stability: Unlike many nickel alloys, Hastelloy grades are designed to resist sensitization and sigma phase formation, maintaining weldability and toughness even after long-term elevated-temperature exposure.
Jinie Technology supplies Hastelloy pipes in the following forms to meet diverse engineering requirements:
Pipe Type | Manufacturing Method | Size Range (OD) | Wall Thickness | Standard Lengths | Primary Applications |
Seamless Pipe | Extrusion/piercing + cold drawing | 1/8" to 8" (3-219mm) | SCH 5S to XXH | Up to 12m | High-pressure critical service, H2S service |
Welded Pipe (TIG/ERW) | Plate/coil rolling + TIG welding | 1/4" to 48" (6-1219mm) | SCH 5S to SCH 40 | Up to 18m | Large-diameter low-pressure, cost-effective |
Welded Pipe (SAW) | Plate rolling + submerged arc welding | 16" to 120" (406-3048mm) | > SCH 30 | Up to 12m | Very large diameter, low-pressure |
Instrumentation Tube | Cold-drawn seamless | 1/8" to 2" (3-50mm) | BWG 11-20 (thin wall) | Coiled or straight | Instrumentation, analytical systems |
Heat Exchanger Tube | Seamless or welded (U-bend capable) | 3/4" to 2" (19-50mm) | BWG 12-18 | Straight or U-bent | Shell-and-tube heat exchangers |
Drawn Tube (OD/ID) | Precision cold-drawn | 0.125" to 6" (3-152mm) | Custom thin walls | Up to 6m | High-precision fluid transfer |
Table 2: Hastelloy Pipe Types — Dimensions and Applications. Source: ASTM B622, ASTM B626, ASTM B619, ASTM B829, manufacturer capability data.
Hastelloy alloys are categorized by their primary alloying elements and corrosion mechanism. The following grades are the most commercially significant for pipe and tube applications:
Hastelloy B Family — Nickel-Molybdenum (Acid-Resistant)
Property | Hastelloy B-2 | Hastelloy B-3 |
UNS Number | N10665 | N10675 |
Nickel (Ni) | Balance (~70%) | Balance (~65%) |
Molybdenum (Mo) | 26-30% | 28-32% |
Chromium (Cr) | 1.0% max | 1.5% max |
Iron (Fe) | 2.0% max | 1.5-3.0% |
Tungsten (W) | — | — |
Carbon (C) | 0.02% max | 0.01% max |
PREN (approx.) | 55-65 | 55-70 |
HCl Resistance | Excellent (up to 20%) | Excellent (up to 20%) |
H2SO4 Resistance | Good | Good |
H3PO4 Resistance | Excellent | Excellent |
Max Temperature (continuous) | 400°C (750°F) | 400°C (750°F) |
Weldability | Good (careful procedure) | Excellent (improved) |
Primary Use | HCl acid, reducing acids | HCl acid, improved thermal stability |
Table 3: Hastelloy B Family — Chemical Composition and Properties. Source: Haynes International datasheets, UNS N10665/N10675/N10655 specifications, ASTM B622.
Key Note on B-2 vs B-3: Hastelloy B-3 has improved thermal stability over B-2, reducing the risk of sigma phase embrittlement during long-term exposure to 600-850°C. B-3 is the preferred choice for new projects. B-2 is legacy but still widely specified in existing plant designs.
Hastelloy C Family — Nickel-Chromium-Molybdenum (General Corrosion)
Property | Hastelloy C-276 | Hastelloy C-22 | Hastelloy C-2000 |
UNS Number | N10276 | N06022 | N06200 |
Nickel (Ni) | Balance (~57%) | Balance (~49%) | Balance (~59%) |
Chromium (Cr) | 14.5-16.5% | 20-22.5% | 22-24% |
Molybdenum (Mo) | 15-17% | 12.5-14.5% | 15-17% |
Iron (Fe) | 4-7% | 2-6% | 3% max |
Tungsten (W) | 3-4.5% | 2.5-3.5% | — |
Copper (Cu) | — | — | 1.3-1.9% |
Carbon (C) | 0.01% max | 0.015% max | 0.01% max |
PREN (approx.) | 65-75 | 70-80 | 70-80 |
Oxidizing Acid Resistance | Very Good | Excellent | Excellent |
Reducing Acid Resistance | Excellent | Very Good | Very Good |
Chloride Pitting/Crevice | Excellent | Excellent | Excellent |
H2S Resistance (sour gas) | Excellent (certified) | Excellent (certified) | Excellent (certified) |
Max Temperature (continuous) | 535°C (1000°F) | 540°C (1005°F) | 540°C (1005°F) |
Weldability | Good (WPS required) | Very Good | Very Good |
Primary Use | Most versatile, all-round | Best all-round oxidizing resistance | Best oxidizing + Cu for H2SO4 |
Table 4: Hastelloy C Family — Chemical Composition and Properties. Source: Haynes International datasheets, UNS N10276/N06022/N06200 specifications, ASTM B622.
The C-family represents the most versatile Hastelloy grades. C276 is the workhorse (most widely used), C22 offers the best overall corrosion resistance in oxidizing environments, and C-2000 adds copper for enhanced sulfuric acid performance.
Hastelloy G Family — Nickel-Chromium-Molybdenum-Copper (Phosphoric Acid)
Property | Hastelloy G-30 |
UNS Number | N06030 |
Nickel (Ni) | Balance (~43%) |
Chromium (Cr) | 28-31% |
Molybdenum (Mo) | 4-6% |
Iron (Fe) | 13-17% |
Copper (Cu) | 1.5-2.5% |
Niobium (Nb) | 0.3-1.5% |
PREN (approx.) | 50-55 |
H3PO4 Resistance | Superior (wet-process phosphoric acid) |
HNO3/HF Resistance | Good |
Chloride Resistance | Very Good |
Max Temperature | 540°C (1005°F) |
Primary Use | Phosphoric acid (fertilizer production) |
Table 5: Hastelloy G Family — Chemical Composition and Properties. Source: Haynes International datasheets, UNS N06030/N06035 specifications, ASTM B622.
Hastelloy X — Nickel-Chromium-Iron-Molybdenum (High-Temperature)
Property | Hastelloy X |
UNS Number | N06002 |
Nickel (Ni) | Balance (~47%) |
Chromium (Cr) | 20.5-23% |
Iron (Fe) | 17-20% |
Molybdenum (Mo) | 8-10% |
Cobalt (Co) | 0.5-2.5% |
Tungsten (W) | 0.2-1.0% |
Carbon (C) | 0.05-0.15% |
Boron (B) | 0.006% max |
Max Temperature (continuous) | 1095°C (2000°F) |
Max Temperature (intermittent) | 1205°C (2200°F) |
Oxidation Resistance | Excellent to 1150°C |
Creep Strength | Excellent at 815-980°C |
Primary Use | Gas turbine, jet engine, furnace components, nuclear reactor |
Table 6: Hastelloy X — Chemical Composition and Properties. Source: Haynes International datasheet H-3004, UNS N06002, ASTM B622.
Hastelloy pipe and tube products are governed by rigorous international standards covering chemical composition, mechanical properties, dimensions, testing, and documentation. The following tables provide a comprehensive overview of applicable standards.
ASTM Standards for Hastelloy Pipes
ASTM Standard | Title | Product Form | Applicable Grades |
ASTM B622 | Standard Specification for Seamless and Welded Nickel and Nickel-Cobalt Alloy Pipe and Tube | Seamless and welded pipe and tube (general) | N10665, N10675, N10276, N06022, N06200, N06030, N06002, N06035 |
ASTM B626 | Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube | Welded tube (small diameter) | N10665, N10675, N10276, N06022, N06200, N06030, N06002 |
ASTM B619 | Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Pipe | Welded pipe (standard) | N10665, N10276, N06022, N06030, N06002 |
ASTM B829 | Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube | Seamless pipe and tube | N10665, N10675, N10276, N06022, N06200, N06030, N06002 |
ASTM B163 | Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Condenser and Heat Exchanger Tubes | Heat exchanger tubes | N10665, N10276, N06022, N04400 |
ASTM B167 | Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube (for high-temp) | High-temperature service | N06600, N06690 (not Hastelloy, but related) |
ASTM B983 | Standard Specification for Seamless and Welded UNS N08925, N08031, N08367, N08932, N08926, and R20033 Alloy Pipe | Super austenitic (related) | N08926, R20033 |
Table 7: ASTM Standards for Hastelloy and Related Nickel Alloy Pipes and Tubes. Source: ASTM International, 2024 Annual Book of Standards, Vol. 02.04.
ASME Standards (Pressure Piping and Vessels)
ASME Standard | Title | Application | Relevance to Hastelloy Pipe |
ASME B36.10M | Welded and Seamless Wrought Steel Pipe | Dimensional schedule system | Defines NPS, schedule, OD, wall thickness |
ASME B36.19M | Stainless Steel Pipe | Dimensional schedule (stainless) | Schedules 5S, 10S, 40S, 80S apply |
ASME B31.3 | Process Piping | Pressure piping code | Design stress values, pipe selection for process plants |
ASME B31.1 | Power Piping | Power plant piping | Design stress values for power plants |
ASME BPVC Section VIII Div.1 | Pressure Vessels | Pressure vessel construction | Shell, tube sheets, flanges for vessels |
ASME BPVC Section II-D | Materials — Part D | Allowable stress tables | Maximum allowable stress (S) values by grade |
NACE MR0175 / ISO 15156 | Materials for H2S Service | Sour gas applications | Required for H2S-containing oil & gas environments |
Table 8: ASME Standards Relevant to Hastelloy Pipe Applications. Source: ASME Boiler and Pressure Vessel Code (2023 Edition), ASME B31.3 (2024).
European (EN) and ISO Standards
Standard | Title | Application |
EN 10216-5 | Seamless Steel Tubes for Pressure Purposes — Part 5: Stainless Steel Tubes | Seamless tube (pressure) |
EN 10217-7 | Welded Steel Tubes for Pressure Purposes — Part 7: Stainless Steel Tubes | Welded tube (pressure) |
EN 10219-2 | Cold Formed Welded Structural Hollow Sections of Non-Alloy and Fine Grain Steels | Structural hollow sections |
ISO 6207 | Seamless and Welded Steel Tubes for General Purpose | General purpose tube |
ISO 15510 | Stainless Steels — Chemical Composition | Chemical composition reference (not Hastelloy) |
ISO 15156 / NACE MR0175 | Materials for H2S-Containing Environments | Sour gas service requirement |
Table 9: European and ISO Standards for Nickel Alloy Pipes. Source: CEN European Standards, ISO International Standards.
Chemical Composition Requirements (ASTM B622)
The following table provides the maximum allowed carbon content and key alloying element ranges per ASTM B622 for common Hastelloy grades:
Grade (UNS) | Ni (%) | Cr (%) | Mo (%) | W (%) | Fe (%) | C (max %) | Other |
N10665 (B-2) | Balance (~70) | 1.0 max | 26-30 | 2.0 max | 0.02 | — | |
N10675 (B-3) | Balance (~65) | 1.5 max | 28-32 | 3.0 max | 1.5-3.0 | 0.01 | Al: 0.5 max, Ti: 0.2 max |
N10276 (C-276) | Balance (~57) | 14.5-16.5 | 15-17 | 3-4.5 | 4-7 | 0.01 | V: 0.35 max |
N06022 (C-22) | Balance (~49) | 20-22.5 | 12.5-14.5 | 2.5-3.5 | 2-6 | 0.015 | — |
N06200 (C-2000) | Balance (~59) | 22-24 | 15-17 | — | 3.0 max | 0.01 | Cu: 1.3-1.9 |
N06030 (G-30) | Balance (~43) | 28-31 | 4-6 | 1.5-4.0 | 13-17 | 0.03 | Cu: 1.5-2.5, Nb+Ta: 0.3-1.5 |
N06002 (X) | Balance (~47) | 20.5-23 | 8-10 | 0.2-1.0 | 17-20 | 0.05-0.15 | Co: 0.5-2.5, B: 0.006 max |
N10655 (B-4) | Balance (~68) | 1.0 max | 26-30 | 2.5-3.0 | 2.0 max | 0.01 | — |
Table 10: ASTM B622 Chemical Composition Requirements for Hastelloy Grades (weight %). Source: ASTM B622-23, UNS assignments per ASTM DS-56K/SAE HS-1086.
Mechanical Property Requirements (ASTM B622, Room Temperature)
Grade (UNS) | Tensile Strength (min) | Yield Strength 0.2% (min) | Elongation (min %) | Hardness (max) |
N10665 (B-2) | 760 MPa (110 ksi) | 350 MPa (51 ksi) | 40% | HBN 235 (annealed) |
N10675 (B-3) | 760 MPa (110 ksi) | 350 MPa (51 ksi) | 40% | HBN 235 (annealed) |
N10276 (C-276) | 690 MPa (100 ksi) | 283 MPa (41 ksi) | 40% | HBN 220 (annealed) |
N06022 (C-22) | 690 MPa (100 ksi) | 310 MPa (45 ksi) | 45% | HBN 220 (annealed) |
N06200 (C-2000) | 690 MPa (100 ksi) | 310 MPa (45 ksi) | 45% | HBN 230 (annealed) |
N06030 (G-30) | 690 MPa (100 ksi) | 310 MPa (45 ksi) | 30% | HBN 220 (annealed) |
N06002 (X) | 660 MPa (95 ksi) | 240 MPa (35 ksi) | 35% | HBN 220 (annealed) |
Table 11: ASTM B622 Mechanical Property Requirements (Minimum Values, Room Temperature, Annealed). Source: ASTM B622-23, ASTM A370-23.
Dimensional Tolerances (ASTM B622)
Dimensional Parameter | Seamless Pipe/Tube Tolerance | Welded Pipe/Tube Tolerance |
Outside Diameter (OD) | +/- 0.50mm (≤ 25.4mm OD), +/- 1% (> 25.4mm OD) | +/- 0.50mm (≤ 50.8mm OD), +/- 1% (> 50.8mm OD) |
Wall Thickness | +/- 10% of specified wall (average), +22%/-0% (single spot) | +/- 10% of specified wall (average), +20%/-0% (single spot) |
Length | +6mm/-0mm (random), +/- 3mm (fixed) | +6mm/-0mm (random), +/- 3mm (fixed) |
Straightness | Max 1.5mm per 300mm | Max 1.5mm per 300mm |
Roundness | Within OD tolerance | Within OD tolerance |
Table 12: Dimensional Tolerances per ASTM B622-23. Source: ASTM B622-23.
Industry | Typical Applications | Hastelloy Grades Used |
Chemical Processing | Reactor vessels, heat exchangers, piping for acids (HCl, H2SO4, HF, H3PO4), chlorination systems | B-2/B-3, C-276, C-22, C-2000 |
Oil & Gas | Sour gas wells (H2S), acid gas separation, seawater injection, refinery piping | C-276, C-22, G-30, X |
Pollution Control | Flue gas desulfurization (FGD), scrubbers, waste treatment, Incineration systems | C-276, C-22, G-30, X |
Pharmaceutical | Reactor piping, sterile steam systems, high-purity chemical transfer | B-2/B-3, C-276 |
Pulp & Paper | Bleaching drums, digester piping, chloride-rich process streams | C-276, G-30 |
Aerospace | Jet engine combustion chambers, afterburner tubing, rocket engine components | X, C-276 |
Nuclear | Fuel reprocessing, radioactive waste handling, cooling systems | X, C-276 |
Power Generation | Coal-fired boiler components, ash handling, cooling towers | C-276, C-22, X |
Type | Seamless/Welded/SAW/ERW/EFW Pipe | |
End | BE (Beveled End) | |
Size | OD: 1/2"-48" | |
Manufacturing Technique | Hot rolling / Hot work / Cold rolling / Cold-drawn | |
Producing Standard | ASME B36.10 and ASME B36.19 | |
Hastelloy Steel Grades | ASTM B474 | UNS NO6002/Hastelloy X, UNS N06022/ Hastelloy C22, UNS N10276/Hasteloy C276, UNS N10665 Hastelloy B2, UNS N10675/Hastelloy B3 |
ASTM B622 | UNS N10665/Hastellby B2, UNS N10675/Hastelloy B3,UNS N06200/C2000, UNSN10276/C276, UNS N06002/ Hastelloy-X | |
