Hastelloy C276 / Alloy C-276 Supplier

Buyers commonly use Hastelloy C276, Hastelloy C-276, Alloy C276 and Alloy C-276 when referring to UNS N10276. For purchasing and quality records, the safest identification is Alloy C-276 / UNS N10276 together with the applicable ASTM or ASME product specification.

UNS N10276 is the Unified Numbering System designation for Alloy C-276. W.Nr. 2.4819 is the commonly referenced European material number. Using the UNS designation on drawings, RFQs, MTCs and inspection records helps reduce ambiguity between commercial alloy names.

C-276 is a nickel-chromium-molybdenum-tungsten alloy, not stainless steel. It is normally considered for more demanding corrosion environments involving aggressive acids, chlorides, localized corrosion or mixed process chemistry.

ASTM B575 is commonly used for C-276 plate, sheet and strip; ASTM B622 for seamless pipe and tube; ASTM B619 for welded pipe; ASTM B626 for welded tube; ASTM B574 for rod and bar; ASTM B564 for forgings; ASTM B462 for flanges and forged fittings; and ASTM B366 for wrought fittings. The product form should therefore be identified before a standard is assigned.

ASTM B622 covers seamless nickel-alloy pipe and tube, ASTM B619 applies to welded pipe, and ASTM B626 applies to welded tube. An RFQ should identify whether the product is seamless or welded together with OD, wall thickness, length and quantity rather than simply requesting “C276 pipe.”

Supply can cover plate, sheet, strip, capillary tube, seamless pipe and tube, large welded pipe, round bar and forged starting material. Capillary tube can be reviewed from approximately 0.5–6 mm OD, while welded C-276 pipe can be reviewed for project sizes up to approximately 1219 mm OD. Larger plate sections, large-diameter bars, blocks, rings and custom blanks may use a forged route. Actual availability is confirmed against the required dimensions.

Availability depends on product form, specification, dimensions and quantity. Some requirements may match current stock or available starting material, while others require mill production, welded fabrication, forging or additional processing. TiAlloy confirms current C-276 stock, production route and availability against the specific RFQ rather than presenting every listed size as inventory.

C-276 price depends on product form, dimensions, quantity, material availability, production route, tolerance, machining, surface condition, testing, certification, packing and delivery term. A C276 plate price, C276 seamless pipe price or forged C276 price can therefore differ substantially even at the same total weight. Send the complete specification for an accurate price and availability review.

There is no single lead time for every C-276 product. Delivery depends on whether the required size is available, requires new production, needs forging or welded fabrication, and whether machining, supplementary testing or third-party inspection is included. Quantity and destination also affect shipment planning. The confirmed production slot and expected shipment schedule should be reviewed with the quotation.

Yes, different C-276 product forms can be reviewed under one project enquiry. Each line item should still identify its own ASTM or ASME standard, dimensions, quantity, processing and inspection requirements. TiAlloy can coordinate the applicable plate, tubular, bar, forging and specialist processing routes and confirm them in the quotation.

Both are nickel-chromium-molybdenum corrosion-resistant alloys, but their chemistry and corrosion behaviour are not identical. C-22 has a higher chromium level and is often considered where oxidizing chemistry is important, while C-276 remains widely specified for severe reducing, chloride-containing and mixed-process environments. Selection should follow the actual medium, concentration and temperature rather than a universal ranking. See the Alloy C-22 material page .

Alloy 625 combines corrosion resistance with high mechanical strength and is widely used in marine, offshore, chemical and high-performance equipment. C-276 contains substantially more molybdenum and is generally positioned more strongly toward severe chemical-corrosion service. The correct choice depends on corrosion medium, temperature, mechanical loading, fabrication and project specification. See the Alloy 625 / Inconel 625 material page .

C-276 is widely used because of its resistance to many reducing acids and chloride-containing environments and its resistance to localized corrosion mechanisms such as pitting and crevice attack under suitable service conditions. It should not, however, be described as universally corrosion-proof. Concentration, temperature, contaminants, aeration, fabrication and operating cycles can change material performance.

Yes. C-276 is used in welded vessels, piping and fabricated process equipment, and bar or forged stock can be machined into valves, shafts, pump components and custom parts. Welding procedure, filler selection, joint preparation, heat input and cleanliness should follow the applicable fabrication or project requirements. Machining allowance, tolerance and finished dimensions should be included in the RFQ when TiAlloy is asked to supply processed components.

Material documentation can include the applicable MTC or MTR and EN 10204 3.1 when ordered. Chemical composition, mechanical results and heat traceability are reviewed according to the governing product specification. PMI, hardness testing, metallography, impact testing, UT, PT, ET, hydrostatic testing or third-party inspection may be included when required by the product form, purchase order or project inspection plan. EN 10204 3.2 should be specified before quotation when required.

For a useful C-276 quotation, send Alloy C-276 / UNS N10276, the required product form, ASTM or ASME specification, exact dimensions in millimetres, quantity and required condition or finish. Add drawings for custom or machined parts. Also identify any tolerance, cut length, bevel, machining, surface requirement, PMI, NDT, EN 10204 certificate, third-party inspection, export packing, destination, Incoterm and target delivery date. With these details, TiAlloy can review the correct material route, current availability, processing scope, inspection package, lead time and C276 price instead of issuing a quotation based on an incomplete line item.