Hastelloy Threaded Rods
Hastelloy Threaded Rods are resistant to some of the most severe chemicals, this very material often finds use in oil & gas sour gas service, chemical processing, power industries flue gas desulfurization systems, off-shore oil and down hole environments, pulp & paper bleaching and digesters, as well as other industrial facets where corrosion is an issue.
RAYCHIN SPECIALTY METALS FASTENERS: BOLTS, NUTS, SCREWS, WASHERS, STUDS, THREADED RODS, U-BOLT, J-BOLTS
STANDARD AND CUSTOMIZED, SMALL BATCH AND LARGE BATCH, IMPERIAL AND METRIC
A high performace nickel alloy used for severe corrosion environments
Excellent corrosion resistance to sulfuric & hydrochloric acids
Good mechanical properties at elevated temperatures
Hastelloy fasteners is often used for applications involving:
Sulfuric and hydrochloric acid (h2so4 & hcl)
Sour gas
Chlorides, wet chloride gas and chlorine solutions
Solvents
Formic and acetic acidsgeneral acid corrosion comparison
Acetic anhydride
Hypochlorites
Phosphoric acid
Oil & Gas sour gas service,
Chemical processing,
Power industries flue gas desulfurization systems,
Off-shore oil and down hole environments,
Pulp & paper bleaching and digesters,
As well as other industrial facets where corrosion is an issue.
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RAYCHIN LIMITED
Specialist in Hastelloy Threaded Rods · Fully Threaded · Continuous Thread · CustomHastelloy Threaded Rods: Nickel-Based Superalloy Studding for Extreme Environments
RAYCHIN LIMITED is a recognized expert in Hastelloy threaded rods — from Hastelloy fully threaded rods, Hastelloy continuous thread studs, Hastelloy studding to custom non-standard configurations across all major Hastelloy grades. Hastelloy alloys are nickel-based superalloys renowned for their exceptional resistance to a wide range of corrosive environments, including strong acids like hydrochloric (HCl) and sulfuric (H₂SO₄), chlorides, and oxidizing agents. These alloys maintain outstanding mechanical properties and oxidation resistance at both cryogenic and elevated temperatures up to 1200°C (2200°F) for certain grades. With nickel-molybdenum-chromium matrices, Hastelloy threaded rods outperform stainless steel and titanium in aggressive chemical, petrochemical, and high-temperature applications. Our portfolio includes threaded rods manufactured to NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS standards. Engineered for the most demanding environments where corrosion resistance and reliability are critical. Hastelloy threaded rods are supplied in solution annealed condition with full traceability and third-party certifications.
Complete Range of Hastelloy Threaded Rods – Configurations
Fully Threaded Rods (DIN 975 / ASME B18.31.1M)
Hastelloy fully threaded rods manufactured to DIN 975, ISO 4014, and ASME B18.31.1M standards. Features continuous threads along the entire length for maximum versatility in applications requiring engagement along the full rod length. Ideal for high-temperature corrosive applications up to 1200°C where custom lengths are required. Precision rolled threads for superior strength and corrosion resistance. Available in diameters from M6 to M100 (metric) and 1/4" to 4" (inch) in standard lengths of 1m, 2m, 3m, and custom lengths up to 6m. Supplied in solution annealed condition per ASTM standards. Suitable for pipe supports, flange connections, and tension applications in aggressive chemical environments.
Continuous Thread Studs (DIN 976)
Hastelloy continuous thread studs manufactured to DIN 976, and ASME B18.31.2 standards. Features continuous threads along the entire length, typically supplied in precision-cut lengths for specific applications. Ideal for heat exchangers, valve assemblies, and structural connections requiring high-temperature capability and corrosion resistance. Precision rolled UNC, UNF, and metric threads for superior fatigue resistance. Available in diameters from M6 to M100 (metric) and 1/4" to 4" (inch) in custom lengths. Supplied with passivated finish. NACE MR0175 compliant for sour service applications.
Custom & Specialty Threaded Rods
Hastelloy custom threaded rods manufactured to customer specifications. Need a special thread configuration, unusual length, or custom end preparation for your corrosive application? RAYCHIN engineers work with you to produce custom Hastelloy threaded rods to your drawing. Options include extra-long lengths up to 6m, special thread classes, and custom end chamfers. Expert heat treatment (solution annealed at appropriate temperatures for each grade) ensures optimum corrosion resistance. Manufactured to NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN, KS standards.
Hastelloy Grade Selection Guide for Threaded Rods
Hastelloy C-276 (UNS N10276 / 2.4819)
The Universal Grade: Nickel-chromium-molybdenum alloy with tungsten addition. Exceptional resistance to a wide range of corrosive media including strong acids, chlorides, and oxidizing agents. Resists HCl, H₂SO₄, and wet chlorine gas. Ideal for chemical reactors, pollution control, and marine applications.
Hastelloy C-22 (UNS N06022 / 2.4602)
Superior Oxidizing Media Resistance: Higher chromium content provides enhanced resistance to oxidizing acids and mixed acid environments. Outperforms C-276 in nitric acid and chloride/sulfide environments. Ideal for nuclear waste containers, pickling equipment, and flue gas scrubbers.
Hastelloy B-2 & B-3 (UNS N10665 / 2.4617)
Reducing Acid Specialists: High molybdenum content provides exceptional resistance to hydrochloric acid, sulfuric acid, and acetic acid under reducing conditions. Not suitable for oxidizing media. Ideal for HCl acid evaporators and acetic acid reactors.
Hastelloy X (UNS N06002 / 2.4665)
High-Temperature Specialist: Exceptional oxidation resistance, high-temperature strength, and fabrication ease up to 1200°C. Resists carburization and stress corrosion cracking in petrochemical applications. Ideal for gas turbine engines, combustor cans, and afterburner components.
Hastelloy C-4 (UNS N06455 / 2.4610)
Enhanced Thermal Stability: Maintains ductility and corrosion resistance after long-term exposure to 649-1038°C. Resists hydrochloric and sulfuric acid as well as chloride-rich solutions. Ideal for chemical reactors, bleaching systems, and waste treatment.
Hastelloy Threaded Rod Design & Standards
Dimensional Standards
Our Hastelloy threaded rods meet or exceed the following specifications:
Standard lengths: 1m, 2m, 3m (metric), 3ft, 6ft, 10ft (inch). Custom lengths available up to 6m (20ft).
Material Specifications by Grade
- C-276: ASTM B574 / ASME SB574, AMS 5754
- C-22: ASTM B574 / ASME SB574
- B-2: ASTM B335 / ASME SB335
- B-3: ASTM B335 / ASME SB335
- C-4: ASTM B574 / ASME SB574
- X: ASTM B572, AMS 5754, AMS 5798
Surface Finish Options
- Passivated: Per ASTM A967 for maximum corrosion resistance
- Electropolished: For clean room and pharmaceutical applications
- PTFE Coated: For anti-galling and lubricity
- As-rolled: Mill finish
Key Benefits of Hastelloy Threaded Rods
Exceptional Acid Resistance
Hastelloy threaded rods offer outstanding resistance to hydrochloric acid (HCl), sulfuric acid (H₂SO₄), phosphoric acid, and acetic acid. C-276 grade resists 40% HCl at 60°C with <0.05mm/year corrosion rate, and 50% H₂SO₄ at 90°C.
High-Temperature Strength
Hastelloy X maintains tensile strength up to 1200°C (2200°F) under short-term exposure, with exceptional oxidation resistance. C-22 and C-276 retain strength up to 1090°C in oxidizing environments.
Continuous Thread Design
Fully threaded along the entire length, allowing cutting to any required length for custom applications. Provides maximum versatility for field modifications and custom installations in corrosive environments.
Chloride & SCC Resistance
Excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. PREN values of 68-73 for C-276 and C-22, far exceeding super duplex grades.
NACE MR0175 Approved
Qualified for sour service (H₂S) environments per NACE MR0175 / ISO 15156. Suitable for wellhead equipment, valve assemblies, and subsea connections in oil and gas applications.
Long Length Capability
Available in lengths up to 6 meters (20 feet), allowing for continuous runs without joints or couplings. Ideal for long-span applications and custom installations in chemical plants and refineries.
Manufacturing Standards for Hastelloy Threaded Rods
RAYCHIN LIMITED manufactures Hastelloy threaded rods to the following national and international standards, ensuring full compliance for projects worldwide. Both standard and non-standard custom configurations are available.
International Standards & Global Designations for Hastelloy Threaded Rods
To serve clients worldwide, RAYCHIN LIMITED manufactures Hastelloy threaded rods from material conforming to the following national and international specifications.
UNS N10276 2.4819 UNS N06022 2.4602 UNS N10665 UNS N06002 2.4665 NACE MR0175
Chemical Composition (Weight %) – Hastelloy Alloys
Our Hastelloy threaded rods are produced from melts that strictly conform to the limits below per ASTM standards. The nickel-molybdenum-chromium matrix provides the exceptional corrosion resistance and high-temperature strength characteristic of these alloys.
Hastelloy C-276 (UNS N10276 / 2.4819)
Hastelloy C-22 (UNS N06022 / 2.4602)
Hastelloy B-2 (UNS N10665 / 2.4617)
Hastelloy X (UNS N06002 / 2.4665)
Expert note: The high nickel content provides resistance to chloride stress corrosion cracking. Molybdenum adds strength and resistance to reducing acids like HCl. Chromium provides resistance to oxidizing media such as nitric acid. Tungsten enhances solid solution strengthening and localized corrosion resistance. The low carbon content in most grades prevents sensitization and intergranular corrosion after welding.
Complete Mechanical Properties of Hastelloy Threaded Rods
Hastelloy threaded rods are supplied in the solution annealed condition. The data below represent minimum requirements per ASTM standards unless otherwise noted.
Mechanical Properties by Grade (Solution Annealed)
Physical Properties by Grade
Elevated Temperature Mechanical Properties
Exceptional Corrosion Resistance of Hastelloy Threaded Rods
Hastelloy alloys offer unparalleled resistance to a wide spectrum of corrosive environments, combining the benefits of high nickel, chromium, and molybdenum content.
Hydrochloric Acid (HCl) Resistance
Hastelloy C-276 threaded rods resist 40% HCl at 60°C with <0.05mm/year corrosion rate. B-2 and B-3 grades excel in HCl environments under reducing conditions, making them ideal for HCl acid evaporators and reactors.
Sulfuric Acid (H₂SO₄) Resistance
C-276 offers exceptional resistance to 50% H₂SO₄ at 90°C. C-22 provides superior performance in mixed acid environments containing oxidizing impurities.
Chloride Stress Corrosion Cracking (SCC) Resistance
With high nickel content, Hastelloy threaded rods have excellent resistance to chloride SCC. PREN values of 68-73 for C-276 and C-22 provide outstanding pitting and crevice corrosion resistance.
Resistance to Specific Environments
Heat Treatment & Microstructural Stability
Hastelloy threaded rods are supplied in the solution annealed condition for optimum corrosion resistance and mechanical properties. Heat treatment parameters vary by grade:
- C-276 & C-22: Solution anneal at 1121-1177°C followed by rapid cooling (water quench).
- B-2 & B-3: Anneal at 1038-1121°C with rapid cooling to avoid intermetallic precipitation.
- X: Solution anneal at 1121-1232°C with air or rapid cooling.
- C-4: Anneal at appropriate temperature with rapid cooling; maintains ductility after long-term exposure to 649-1038°C.
Proper heat treatment ensures the balanced microstructure that provides the exceptional corrosion resistance and mechanical properties characteristic of Hastelloy alloys. All threaded rods are fully solution annealed and rapidly quenched to ensure optimal performance.
Special focus: Hastelloy Threaded Rods for Critical Applications
For the most demanding applications requiring exceptional corrosion resistance and high-temperature strength, RAYCHIN offers Hastelloy threaded rods manufactured to ASTM, ASME, NACE, and customer-specific specifications. Our capabilities include:
- Chemical Processing: Heat exchanger tie rods, reactor internals, column supports, piping hangers, vessel internals handling HCl, H₂SO₄, and mixed acids.
- Oil & Gas / Sour Service: NACE MR0175 compliant threaded rods for wellhead equipment, valve assembly tie rods, subsea structural supports.
- Nuclear Industry: Threaded rods for spent fuel reprocessing, reactor components, and radioactive waste handling systems.
- Pharmaceutical Manufacturing: Clean room supports, equipment framing, sanitary piping supports, vessel internals.
- Aerospace & Gas Turbines: Combustor can tie rods, transition duct supports, afterburner components, jet engine tailpipe hardware.
- Flue Gas Desulfurization (FGD): Scrubber internals, ductwork supports, mist eliminator tie rods.
- Marine Applications: Seawater piping supports, offshore platform structural bracing, equipment framing.
- Standards: DIN 975, DIN 976, ASME B18.31.1M, ASME B18.31.2.
- Thread Classes: 2A, 3A, UNJF-3A, 6g, 6H.
- Sizes: M6 through M100, 1/4" through 4".
- Lengths: Standard 1m, 2m, 3m (metric), 3ft, 6ft, 10ft (inch). Custom lengths up to 6m (20ft).
- Certifications: EN 10204 3.1/3.2 material certifications, NACE MR0175, API 20F, PED 2014/68/EU.
All Hastelloy threaded rods are supplied with full traceability and third-party NDT upon request. Custom cutting and packaging available. Material certifications included.
Why RAYCHIN LIMITED – The Hastelloy Threaded Rod Authority
Metallurgical competence
Engineers on staff with deep expertise in nickel-based superalloys. We ensure proper solution annealing (1120-1177°C for C-276, 1038-1121°C for B-2) for optimal corrosion resistance across all Hastelloy threaded rods. Every heat is verified by in-house PMI testing to confirm chemistry. With precise control over heat treatment parameters, our threaded rods provide the exact corrosion resistance required for your application.
Global approvals & traceability
Our quality system is ISO 9001:2015 and AS9100D certified; we also comply with NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN and KS. Full material traceability from melt to final packaging (EN 10204 3.1/3.2). Third-party inspections (ABS, DNV, Lloyds) available. All Hastelloy threaded rods meet applicable ASTM, ASME, NACE MR0175, and API standards.
Precision thread rolling & long length capability
In-house CNC thread rolling and cutting capabilities ensure precise thread geometry and consistent mechanical properties. Capable of producing lengths up to 6 meters with consistent thread quality. Precision rolled threads provide superior fatigue life and dimensional accuracy. Available thread classes up to 3A/6g. 100% thread inspection available.
Custom solutions
Need a special thread configuration, unusual length, or custom end preparation for your extreme environment application? Our engineering team works with you to produce custom Hastelloy threaded rods to your drawing. We provide specialized surface treatments and NACE MR0175 compliant processing per customer requirements.
Contact the Hastelloy threaded rod experts today
Request a quote for Hastelloy threaded rods, fully threaded rods, continuous thread studs & custom configurations – any global standard (NAS, AN, MS, ANSI, ASTM, ASME, SAE, API, NACE, ISO, DIN, KS), any quantity. Inquire about C-276, C-22, B-2, B-3, C-4, or X grades for chemical, nuclear, or high-temperature applications.
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