Corrosion resistance
High molybdenum and chromium contents support resistance in many reducing and oxidizing media and against pitting and crevice attack.
Nickel-chromium-molybdenum-tungsten alloy
Alloy C276 / UNS N10276 Plate, Sheet, Strip and Bar
Procurement-focused sourcing for corrosion-resistant Alloy C276 base material, with product form, ASTM standard, dimensions, condition, inspection and delivery requirements reviewed before quotation.
Representative export packing. Confirm order-specific material, protection and documents before dispatch.Grade and standardUNS N10276; ASTM B575 or B574
Form and dimensionsPlate, sheet, strip, bar or cut blank
Quantity and conditionPieces or weight; required condition
Delivery requirementsDestination, date, MTC and inspection
Material overview
Why buyers specify Alloy C276
Alloy C276 is a wrought nickel-chromium-molybdenum alloy with tungsten. It is evaluated for severe corrosive environments where resistance to localized attack and stress-corrosion cracking is important. Final grade selection remains the buyer's engineering responsibility.
Fabrication
Wrought plate, sheet, strip and bar can be specified for fabricated process equipment subject to the governing material and fabrication codes.
Weldability
Low carbon and silicon contents help limit grain-boundary precipitation during welding. Filler-metal selection must follow the approved welding procedure.
Technical reference
Composition and purchasing data
The values below are published nominal composition data, not an order certificate. The applicable ASTM edition, purchase specification and mill test certificate control supplied material.
Published nominal composition, weight %
| Element | Published value |
|---|---|
| Nickel | Balance (about 57) |
| Chromium | 16 |
| Molybdenum | 16 |
| Tungsten | 4 |
| Iron | 5 |
| Cobalt | 2.5 max |
| Carbon | 0.01 max |
| Silicon | 0.08 max |
| Manganese | 1 max |
| Vanadium | 0.35 max |
| Copper | 0.5 max |
Key purchasing facts
- Designation
- UNS N10276; W.Nr. 2.4819
- Base-material forms
- Plate, sheet, strip, rod, bar and cut blanks
- Plate / sheet / strip
- ASTM B575
- Rod / bar
- ASTM B574
- Related filler metal
- AWS A5.14 ERNiCrMo-4; quote separately from base material
Technical reference: Haynes International C-276 alloy data. Confirm all design and acceptance values against the governing standard and order documents.
Common specifications
Match the product form to the correct standard
Send the exact standard, edition, condition and tolerances shown on the drawing or material list. A grade name alone is not enough for a reliable quotation.
| Product or requirement | Common reference |
|---|---|
| Plate, sheet and strip | ASTM B575 / ASME SB-575 |
| Rod and bar | ASTM B574 / ASME SB-574 |
| Seamless pipe and tube | ASTM B622 / ASME SB-622 |
| Bare welding rod and wire | AWS A5.14 ERNiCrMo-4 |
Availability, MOQ and lead time depend on form, size, quantity, condition, certification and the agreed supply route. This page does not claim fixed stock.
Supply route
Order requirements are checked against coordinated stock or mill production before quotation.
Trial quantities
Trial-order feasibility depends on product form, dimensions and the available source route and is confirmed case by case.
Documents
MTC scope, EN 10204 type when applicable, PMI, dimensional records and third-party witnessing must be agreed before order placement.
Delivery basis
Lead time, packing, Incoterm and loading port are stated in the order-specific quotation after review.
Application review
Where Alloy C276 is commonly evaluated
These are typical evaluation areas, not an application guarantee. The buyer's qualified engineer must assess the actual chemical medium, temperature, pressure, stress, fabrication route and code.
Chemical processing
Reactors, vessels, heat exchangers, piping and components exposed to aggressive process media.
Pollution control
Flue-gas desulfurization and scrubber components where chloride-bearing condensates may be present.
Oil and gas
Sour-service components where the applicable project specification and NACE / ISO requirements are defined by the buyer.
Waste treatment
Equipment handling mixed corrosive streams, subject to material compatibility review.
RFQ checklist
Information needed for an accurate C276 quotation
Complete details reduce repeated clarification and help keep base material separate from ERNiCrMo-4 welding consumables.
1. Grade and standard
Alloy C276 / UNS N10276 plus ASTM, ASME, EN or drawing reference and revision.
2. Product and dimensions
Plate, sheet, strip, rod, round bar or cut blank; include thickness, width, length, diameter and tolerance.
3. Condition and surface
Required heat-treatment condition, surface finish, flatness, straightness or edge condition.
4. Quantity
Pieces, kilograms or total project quantity, including any trial-order requirement.
5. Inspection
MTC, chemistry and mechanical tests, PMI, dimensional report, NDT or third-party inspection scope.
6. Delivery
Destination country or port, required date, packing, Incoterm and any marking requirements.
C276 quotation request
Send the form, dimensions, quantity and destination.
This form is for Alloy C276 base material. If you need ERNiCrMo-4 filler metal, use the related welding-wire page so the AWS classification and packaging can be reviewed separately.
Laixi Special SteelEmail: sales@laixialloy.comWhatsApp: +86 19862517398Include the product form and ASTM standard.
Buyer questions
Alloy C276 FAQ
Quick answers for initial sourcing. Confirm critical requirements against the governing specification.
Which standard applies to C276 plate, sheet and strip?
ASTM B575 is the common wrought specification for Alloy C276 plate, sheet and strip. Send the required edition, dimensions, condition and tolerances.
Which standard applies to C276 rod and bar?
ASTM B574 is commonly referenced for nickel-molybdenum-chromium alloy rod and bar, including UNS N10276.
Is C276 base-metal wire the same as ERNiCrMo-4?
No. Base-metal C276 wire and AWS A5.14 ERNiCrMo-4 welding filler metal are distinct procurement items. State the intended process and required specification.
What controls availability and lead time?
Product form, dimensions, condition, quantity, certificate scope, inspection and supply route are reviewed before an order-specific lead time is quoted.
Related sourcing
Continue with the C276 product family
Keep base material, base-metal wire and welding filler metal matched to the correct specification.
C276 Base-Metal Wire
Wire product-form guidance and RFQ details.
ERNiCrMo-4 Welding Wire
AWS filler-metal classification and purchasing details.
UNS N10276 Buyer Guide
Designation, standards and procurement checklist.
Inspection evidence
Review the original C276 screening photograph
Agree test coverage, acceptance limits and documentation before purchase. A displayed grade match does not establish full specification compliance.
Keep each reading linked to the material
Request the heat or lot number, sampling location, instrument method and inspection report alongside the MTC.
Plan MTC and PMI review