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Hastelloy C-276 Fittings

Hastelloy C-276 Fittings are engineered for piping systems that handle highly corrosive and chemically complex fluids. Their nickel-molybdenum-chromium composition offers dependable protection against wet chlorine, sulfuric and hydrochloric acids, chlorides, pitting, and crevice attack, helping maintain leak-free performance over extended service periods.
Available as elbows, tees, reducers, couplings, and custom configurations, these fittings provide smooth flow transitions and secure connections in demanding process lines. They are commonly selected for chemical reactors, scrubbers, pollution-control units, petrochemical equipment, and offshore systems where conventional stainless steel fittings may not withstand the operating conditions.

 

 

 

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Product Overview

Hastelloy C-276 Fittings for High-Performance Applications

Explore detailed information for this alloy product, including specifications, applications, supply options and quotation requirements.

Why buyers choose Hastelloy C-276 Fittings

Hastelloy C-276 Fittings are engineered for piping systems that handle highly corrosive and chemically complex fluids. Their nickel-molybdenum-chromium composition offers dependable protection against wet chlorine, sulfuric and hydrochloric acids, chlorides, pitting, and crevice attack, helping maintain leak-free performance over extended service periods.
Available as elbows, tees, reducers, couplings, and custom configurations, these fittings provide smooth flow transitions and secure connections in demanding process lines. They are commonly selected for chemical reactors, scrubbers, pollution-control units, petrochemical equipment, and offshore systems where conventional stainless steel fittings may not withstand the operating conditions.

 

 

 

Hastelloy C-276 Fittings
Pipe Specifications

Hastelloy C-276 Fittings size range and supply information

Specifications, available sizes and delivery conditions can vary by production route and order requirements. Contact us for current availability.

Item Typical Options Buyer Notes Typical Specification
Material Grade Hastelloy C-276 / UNS N10276 / W.Nr. 2.4819 Confirm the alloy designation, chemical composition and certification requirements. Nickel-molybdenum-chromium alloy for severe corrosive service
Fitting Type Elbow, tee, reducer, cross, cap, stub end or return bend Specify the fitting type, connection layout and required flow direction. Butt-weld, socket-weld or threaded fittings
Size DN15 to DN600, NPS 1/2 to NPS 24 or custom dimensions Provide nominal size, outside diameter and connection dimensions. Standard and custom sizes available according to project drawings
Wall Thickness SCH 5S to XXS, equal thickness or custom wall thickness Match the fitting wall thickness to the connected pipe and design pressure. Schedule and custom thickness options available
Pressure Rating Class 150, 300, 600, 900, 1500 or 2500 Confirm the pressure class, temperature rating and applicable piping code. Pressure-rated fittings for chemical and high-corrosion applications
Applicable Standard ASTM B366, ASME SB366, ASTM B564, ASME B16.9, ASME B16.11 or project specification Confirm the required material, dimensional and manufacturing standards. ASTM / ASME compliant fittings with full heat traceability
Surface & End Preparation Pickled, bright annealed, polished, beveled or machined ends End preparation should match the welding method and installation requirements. Clean surface with controlled bevel and dimensional tolerances
Inspection & Certification MTC, PMI, chemical analysis, dimensional inspection, tensile test, hardness test, UT, radiography and third-party inspection Confirm NDE scope, documentation and traceability requirements before quotation. EN 10204 3.1 certificate and inspection dossier available

 

 

 

Standards

Common standards for Hastelloy C-276 Fittings

The final standard should follow the purchase order, engineering specification or project drawing.

Product Type Common Standards Typical Use Inspection Notes
Hastelloy C-276 Butt Weld Fittings ASTM B366 / ASME SB366, ASME B16.9 Chemical processing, pollution-control systems, offshore piping and severe corrosion service Verify dimensions, wall thickness, bevel preparation, PMI, weldability and heat traceability.
Hastelloy C-276 Elbows ASTM B366 / ASME SB366, ASME B16.9 Changing flow direction in acid, chloride and wet-process piping systems Inspect bend angle, center-to-end dimensions, ovality, surface condition and material certificates.
Hastelloy C-276 Tees ASTM B366 / ASME SB366, ASME B16.9 Branch connections in chemical, pharmaceutical and flue-gas treatment systems Check outlet alignment, wall thickness, dimensions, PMI and NDT requirements.
Hastelloy C-276 Reducers ASTM B366 / ASME SB366, ASME B16.9 Connecting different pipe sizes in corrosive and high-pressure process piping Verify concentricity or eccentricity, end dimensions, wall thickness and surface quality.
Hastelloy C-276 Caps ASTM B366 / ASME SB366, ASME B16.9 Closing pipe ends in chemical, marine and pollution-control equipment Inspect overall dimensions, end preparation, wall thickness, PMI and forming condition.
Hastelloy C-276 Socket Weld & Threaded Fittings ASTM B366 / ASME SB366, ASME B16.11 Small-bore high-pressure piping, instrumentation and utility connections Confirm pressure class, socket dimensions, thread accuracy, NPT gauge results and traceability.

 

 

 

Chemical Composition

Hastelloy C-276 Fittings composition reference

Chemical composition is reported by heat on the material test certificate. Use the table below as a material-selection reference.

Element Symbol Typical Requirement Function
Nickel Ni Balance Forms the alloy matrix and provides toughness and broad corrosion resistance.
Molybdenum Mo 15.0-17.0 Enhances resistance to pitting, crevice corrosion, and reducing acids.
Chromium Cr 14.5-16.5 Improves resistance to oxidizing media and localized corrosion.
Iron Fe 4.0-7.0 Provides controlled alloy balance and contributes to fitting strength.
Tungsten W 3.0-4.5 Improves localized corrosion resistance and high-temperature strength.
Cobalt Co 2.5 max Controlled residual element in the nickel-based alloy.
Manganese Mn 1.0 max Acts as a deoxidizer during alloy production.
Vanadium V 0.35 max Contributes to strengthening and microstructural stability.
Silicon Si 0.08 max Controlled to maintain ductility, surface quality, and fitting reliability.
Carbon C 0.010 max Minimized to reduce carbide precipitation and preserve corrosion resistance.
Copper Cu 0.50 max Controlled minor element supporting alloy stability.

 

 

 

Mechanical Properties

Mechanical Properties of Hastelloy C-276 Fittings

Mechanical properties vary by standard, pipe size, production route and heat treatment. Use the specified standard and MTC as the final acceptance basis.

Condition / Product Tensile Strength Yield Strength 0.2% Elongation Notes
Annealed seamless Hastelloy C-276 fittings 690 MPa min reference 283 MPa min reference 40% min reference Common reference condition for elbows, tees, reducers, and caps in aggressive chemical service.
Solution annealed Hastelloy C-276 fittings By ASTM / ASME specification By ASTM / ASME specification By ASTM / ASME specification Selected for resistance to pitting, crevice corrosion, and stress-corrosion cracking.
Welded Hastelloy C-276 fittings By ASTM / ASME and purchase specification By ASTM / ASME and purchase specification By ASTM / ASME and purchase specification Specify weld procedure, weld quality, heat treatment, and inspection requirements.
Custom Hastelloy C-276 fittings By design and purchase specification By design and purchase specification By design and purchase specification Confirm dimensions, pressure rating, surface finish, testing, and material traceability.

 

 

 

Values shown are reference data for product selection. Purchase orders should define the exact standard, condition, inspection scope and certificate requirement.

Quotation Checklist

Information to confirm for your order

Share your requirements, including material, size, quantity, and specifications, for a fast quotation.

Material

Grade name, UNS number, equivalent grade or project material code.

Pipe Size

OD / NPS, wall thickness or schedule, length, tolerance and quantity.

Standard

ASTM, ASME, EN, DIN, drawing or customer specification.

Condition

Seamless, welded, annealed, solution annealed, pickled or polished.

Inspection

MTC EN10204 3.1, PMI, UT / ET, hydrotest and dimensional report.

Delivery

Destination, packing requirement, shipping method and delivery deadline.

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FAQ

Frequently asked questions about Hastelloy C-276 Fittings

FAQ content helps cover buyer questions and supports SEO for long-tail product searches.

Hastelloy C-276 Fittings are used in chemical processing, pollution-control equipment, flue gas desulfurization, marine systems, oil and gas, pharmaceutical and highly corrosive piping applications.

Available products include elbows, tees, reducers, caps, crosses, couplings, unions, outlets, stub ends and custom fittings manufactured according to drawings or project specifications.

Butt-weld fittings are commonly supplied to ASTM B366 and ASME SB366, with dimensions according to ASME B16.9. Socket-weld and threaded fittings can be supplied according to ASME B16.11.

Yes. Custom Hastelloy C-276 Fittings can be manufactured according to customer drawings, including special dimensions, wall thicknesses, end connections, tolerances and inspection requirements.

Yes. Hastelloy C-276 Fittings can be supplied with an EN10204 3.1 material certificate, heat number traceability, chemical analysis, mechanical test results, PMI and dimensional inspection reports.

Please provide the fitting type, size, wall thickness or schedule, connection type, quantity, dimensional standard, material standard, certificate requirements and destination.

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