01
Hastelloy C-276 Round Bar
Solid rounds from 6 to 340 mm are supplied for pump shafts, valve stems, and machined acid-plant parts.
Request Availability →Hastelloy C‑276 Bar and Rod
Proven nickel-chromium-molybdenum-tungsten bar and rod for severe corrosion, chloride, and sour-service duty where standard alloys fail.
Carbon and Silicon Reported per Heat
We print the ultra-low carbon and silicon results that protect weld zones on every EN 10204 3.1 certificate. Therefore, your welders can verify the chemistry before they start.
Solution-Annealed Route Documented
We record the anneal and water-quench route used for your bar on the release document. In addition, the lot number ties every test back to its heat.
Sour-Service Hardness Evidence
Because NACE MR0175 / ISO 15156 orders need proof, we ship them with hardness data keyed to each heat number.
PRODUCT OVERVIEW
About Hastelloy C-276 Bar and Rod
Hastelloy C-276 (UNS N10276, W.Nr. 2.4819) is a nickel-chromium-molybdenum-tungsten alloy with ultra-low carbon. Because its chemistry is balanced, it resists oxidizing and reducing acids, chloride pitting, crevice corrosion, and stress-corrosion cracking.
C-276 bar and rod are solution-annealed and water-quenched to ASTM B574 and ASME SB574, then finished as hot-rolled, drawn, or ground stock. Next, round, hex, forged, and machined sections are cut to order, and each lot ships with an EN 10204 3.1 certificate. Where service needs higher strength at temperature than C-276 provides, our Inconel 625 bar and rod extends the nickel-alloy range.
PRODUCT FEATURES
Key Features of Hastelloy C-276 Bar and Rod
Hastelloy C-276 is a nickel-chromium-molybdenum-tungsten alloy with ultra-low carbon that resists oxidizing and reducing acids, chloride pitting, crevice corrosion, and stress-corrosion cracking. Southerly Alloy supplies UNS N10276 bar and rod to ASTM B574 in solution-annealed, hot-finished, and cold-drawn conditions, with custom sizes, surface finishes, and EN 10204 3.1 mill test certificates. Because of this, chemical plants, pollution-control systems, and sour-service oil and gas projects typically specify this bar.
Hastelloy C-276
Oxidizing and Reducing Acid Resistance
For example, chromium, molybdenum, and tungsten together handle nitric, sulfuric, hydrochloric, and mixed-acid streams.
01
Chloride Pitting and Crevice Resistance
Because of its high molybdenum content, the alloy resists localised attack in seawater and chloride process streams.
02
Stress-Corrosion Cracking Resistance
In addition, the nickel-rich matrix stays immune to chloride-induced SCC across the working range.
03
Weld-Immune Intergranular Resistance
Because carbon and silicon stay ultra-low, welded joints remain corrosion-resistant without post-weld heat treatment.
04
Solution-Annealed Stability
After hot working and forming, a water-quenched anneal restores full corrosion resistance.
05
Sour-Service Acceptance
Therefore, C-276 meets NACE MR0175 / ISO 15156 within the applicable hardness limits for H2S duty.
06
Proven Fifty-Year Track Record
Over five decades of service have made it the default choice where failure is not an option.
07
Heat-Traceable Documentation
As a result, each bar leaves with an EN 10204 3.1 certificate that names its heat number.
08
WHY CHOOSE US
Why Choose Hastelloy C-276
Your C-276 enquiry is reviewed against the required chemistry before production, with carbon and silicon controlled to the specified limits. Heat-specific chemistry records are provided with the material certificate.
01
Chemistry Limits Confirmed
We check carbon, silicon, and molybdenum targets against your specification before we pour the heat.
02
Heat-Level Traceability
We compile certificates, hardness records, and PMI data per heat, and they follow the bar to site.
03
Trial-to-Container Supply
Because one test bar and a full order run through the same solution-annealed route, you see the result before the container.
04
Technical Response
Our mill metallurgists, who set the anneal, answer your acid, chloride, and sour-service questions directly.
MANUFACTURING PROCESS
Reliable Production For Critical Applications
We begin each C-276 bar as a vacuum-refined melt and hold carbon and silicon low to protect weld zones. Next, we solution-anneal and water-quench each heat, then finish to the ordered condition. Finally, we file chemistry and test data against the heat number through release.
01
Charge Compounding
We weigh nickel, chromium, molybdenum, tungsten, and iron into the UNS N10276 window before melting.
02
VIM or VOD Melting
We refine the charge under vacuum or argon to keep carbon, silicon, and gas within limits.
03
Forging and Rolling
We forge and roll the ingots down to bar section, and this breaks the cast structure as the size reduces.
04
Solution Annealing
We heat the bar above 1100 °C and rapidly water-quench it to dissolve precipitates and restore corrosion resistance.
05
Cold Finishing
We draw, peel, or centreless-grind the bars to the ordered diameter, tolerance, and surface.
06
Straightening and Cutting
We straighten and cut the bars to length, and we agree the machining allowance for further turning.
07
Surface Conditioning
We remove scale by pickling or grinding so the surface stays clean for acid and seawater duty.
08
Final Verification
We check chemistry, tensile, hardness, and dimensions against the ordered condition before release.
Manufacturing Facility
MANUFACTURING CAPABILITY
Advanced Production For Nickel Alloy Products
We produce C-276 bar in stock and made-to-order diameters, fixing the solution-annealed condition before cutting. The numbers below show the melting, annealing, and test capacity behind that promise. In addition, acid-duty and sour-service work shares the same qualified route.
20,000+ m²
Factory Area
Integrated melting, annealing, and finishing lines run under one roof.
50+
Production Machines
This equipment handles hot working, solution annealing, drawing, and grinding.
600 Tons
Monthly Capacity
We output this much nickel-corrosion-alloy bar across stock and order-specific diameters each month.
30+
Technical Engineers
These metallurgists review your chloride and sour-service specifications with you.
NACE MR0175
Sour-Service Scope
C-276 bar can be supplied for sour-service applications in accordance with NACE MR0175 / ISO 15156, with heat-specific hardness and chemical composition records available when required by the order.
QUALITY ASSURANCE
Strict Quality Control From Production To Delivery
No C-276 bar leaves the works until we prove the ordered ASTM B574 requirements on the heat. First, we check carbon and silicon by spectrometer against the N10276 window. Then we record tensile, hardness, and intergranular results where your specification asks for them.
01
Chemistry Against N10276
We measure carbon, silicon, and molybdenum per heat and check them against the ASTM B574 limits.
02
Mechanical Testing on the Condition
We record tensile and hardness results for the condition actually shipped, not a generic value.
03
Surface and Dimensional Checks
We measure diameter, straightness, and finish to the B574 tolerance class, with PMI where specified.
04
Heat-Linked Documentation
Because certificates carry the heat number, you can trace any bar to its test results at incoming inspection.
PRODUCT FORMS
Available Product Forms
Round bar and rod carry most C-276 enquiries, and hex, square, flat, and forged sections cover corrosion-plant work. In addition, we price every form for its own condition, tolerance, and finish, and we set the machining allowance with the order.
02
Hastelloy C-276 Round Rod
In addition, we draw smaller stock with controlled straightness for fasteners and instrument fittings.
Request Availability →
03
Hastelloy C-276 Bright Bar
We cold-draw it to a bright finish with tight diameter control for automatic lathes and CNC turning.
Request Availability →
04
Hastelloy C-276 Cold-Drawn Bar
It gives higher yield from the as-drawn condition, and we stress-relieve it where straightness matters.
Request Availability →
05
Hastelloy C-276 Hex Bar
We cut hexagonal sections across flats for bolting and multi-flat valve components.
Request Availability →
06
Hastelloy C-276 Square Bar
In addition, we cut square sections to width and length for supports and fabricated frames.
Request Availability →
07
Hastelloy C-276 Flat Bar
We roll rectangular sections to specified thickness and width for scrubber and duct hardware.
Request Availability →
08
Hastelloy C-276 Forged Bar
Because they need a controlled wrought structure, larger diameters and shaped sections are forged for heavy valve bodies.
Request Availability →
09
Centreless-Ground Rod
We hold diameter and straightness to close limits for spindle, pin, and plunger work.
Request Availability →
APPLICATIONS
Engineered For Demanding Industries
Engineers specify C-276 bar where one alloy must survive oxidizing and reducing attack in the same stream. Most of this bar goes to chemical plants, sour-service oil and gas, and pollution control. Therefore, tell us the medium, concentration, and temperature when you request a quote.
Discuss Your Application →
01
Hydrochloric Acid Service
For example, we supply pump shafts, valve stems, and agitator shafts for HCl production, storage, and handling.
02
Sulfuric and Phosphoric Acid Plants
In addition, we supply reactor internals, mixer shafts, and fittings across wide acid concentrations.
03
Chloride-Bearing Process Streams
Because they resist pitting, we supply tubesheet, baffle, and support parts for seawater-cooled exchangers.
04
Sour Oil and Gas Production
Wellhead, tree, and valve components are supplied for H2S-bearing duty within NACE limits.
05
Flue Gas Desulfurization Systems
In FGD systems, we supply scrubber spray headers, dampers, and duct supports for aggressive environments.
06
Waste Incineration and Treatment
Because the duty is aggressive, we supply hardware for acidic combustion products and wastewater streams.
07
Pharmaceutical and Fluorochemical Reactors
We supply agitator shafts and baffle supports where metallic contamination must stay low.
08
Pulp and Paper Bleaching
In pulp and paper, we supply digester fittings, bleach-plant hardware, and blow-line parts for chlorine-bearing service.
TECHNICAL INFORMATION
Technical Specifications
Detailed technical information including chemical composition, mechanical properties, standards and available dimensions.
Chemical Composition
The limits below follow ASTM B574 for UNS N10276 bar and rod, with nickel as the balance of the melt. Molybdenum and tungsten set the reducing-acid and localised-corrosion resistance; in contrast, chromium covers oxidizing media and ultra-low carbon protects the weld zones. Therefore, the mill test certificate governs final acceptance.
| Element | Content |
|---|---|
| Nickel (Ni) | 57.0% min. (balance) |
| Chromium (Cr) | 14.5–16.5% |
| Molybdenum (Mo) | 15.0–17.0% |
| Tungsten (W) | 3.0–4.5% |
| Iron (Fe) | 4.0–7.0% |
| Cobalt (Co) | 2.5% max. |
| Manganese (Mn) | 1.0% max. |
| Vanadium (V) | 0.35% max. |
| Silicon (Si) | 0.08% max. |
| Carbon (C) | 0.010% max. |
| Phosphorus (P) | 0.040% max. |
| Sulfur (S) | 0.030% max. |
Mechanical Properties
Values below separate the ASTM B574 minimums from results typically measured on solution-annealed bar. The standard sets one condition for rod and bar; therefore, we agree cold-drawn or high-strength requirements at quotation. Confirm the ordered condition with your enquiry.
| Condition | Tensile Strength | Yield Strength (0.2%) | Elongation | Hardness |
|---|---|---|---|---|
| Annealed — ASTM B574 minimum | ≥100 ksi (690 MPa) | ≥41 ksi (283 MPa) | 40% | 100 HRB max. |
| Annealed bar — typical values | 115 ksi (790 MPa) | 55 ksi (380 MPa) | 50% | Approx. 90 HRB |
C-276 is not age-hardenable, so any strength above the annealed minimum comes from cold work. Cold-drawn bar is quoted to its as-drawn condition when higher yield is needed.
Physical Properties
Typical room-temperature values below support design work rather than acceptance testing. Because C-276 stays practically non-magnetic across its working range, it suits instrument and magnetically sensitive assemblies.
| Property | Value |
|---|---|
| Density | Approx. 8.89 g/cm³ |
| Melting range | Approx. 1325–1370 °C |
| Modulus of elasticity | Approx. 205 GPa |
| Thermal conductivity at 20 °C | Approx. 10.2 W/m·K |
| Specific heat at 20 °C | Approx. 427 J/kg·K |
| Electrical resistivity at 20 °C | Approx. 1.30 µΩ·m |
| Thermal expansion, 20–100 °C | Approx. 11.2 µm/m·K |
| Magnetic behaviour | Practically non-magnetic at ambient temperature |
Standards
ASTM B574 governs bar and rod, and ASME SB574 is used in pressure equipment. The designations below are cross-reference identifiers rather than separate approvals. In addition, sour-service orders reference NACE MR0175 / ISO 15156, subject to the applicable hardness limits.
| Standard / Designation | Scope |
|---|---|
| ASTM B574 | Nickel-chromium-molybdenum-tungsten alloy rod and bar — UNS N10276 |
| ASME SB574 | ASME edition for rod and bar |
| ASTM B564 / ASME SB564 | Nickel alloy forgings — UNS N10276 |
| ASTM B575 / ASME SB575 | Plate, sheet, and strip in the same grade |
| ASTM B622 / ASME SB622 | Seamless pipe and tube in the same grade |
| NACE MR0175 / ISO 15156 | Sour service in oil and gas production |
| UNS N10276 | Material designation for Hastelloy C-276 |
| W.Nr. 2.4819 / NiMo16Cr15W | European designation for Alloy C-276 |
| DIN 17752 / DIN 17753 / DIN 17754 | Wrought nickel alloys — bar, wire, and forging stock |
| AMS 5750 | Aerospace specification for C-276 bar and wire |
| ISO 9723 / ISO 9724 / ISO 9725 | Nickel alloy bar, wire, and forging stock |
| VdTÜV 400 | German pressure vessel material data sheet |
Dimensions
Ranges below reflect normally produced sections; exact availability depends on condition, finish, and quantity, confirmed at quotation. However, we assess non-standard diameters and lengths against the mill route before we return a quotation.
| Product Form | Typical Supply | Length |
|---|---|---|
| Round Bar | 6–340 mm dia. | Cut to length or random |
| Round Rod | 3–50 mm dia. | Cut to length |
| Bright Bar | 6–150 mm dia. | Cut to length or random |
| Square Bar | 10–150 mm | Cut to length or random |
| Hex Bar | 10–150 mm A/F | Cut to length or random |
| Flat Bar | 3–100 mm thick × 10–300 mm wide | Cut to length |
| Forged Bar | 100–340 mm dia. or forged section | Cut to length |
| Precision-Ground Rod | 3–100 mm dia., tight tolerance | Cut to length |
Surface Finishes
We choose each finish for the next operation, whether machining allowance, acid-service exposure, or a painted assembly. Availability depends on diameter, condition, and order quantity. Therefore, we agree each finish with the order rather than assume it from stock.
| Surface Condition | Typical Use |
|---|---|
| Solution annealed and pickled | Standard delivery for acid and seawater service |
| Hot-worked (as-rolled or forged) | Parts that will be machined to size |
| Cold drawn | Close diameter control with a brighter surface |
| Peeled | Uniform diameter with a machined skin for further turning |
| Centreless ground | Tight diameter and straightness for shafting |
| Polished | Reduced roughness for product-contact and visible parts |
| Rough turned | Machining allowance held on large or forged bar |
TECHNICAL DOCUMENTATION
Download Technical Datasheet
Get detailed information including specifications, standards, dimensions and material properties.
HOW TO START
Start Your Order in 6 Simple Steps
One coordinator keeps your C-276 order moving from enquiry to shipment. Because we fix the solution-anneal route before we cut the bar, our technical team also reviews acid or sour duty early.
1
Send the Medium Details
Share the medium, its concentration and temperature, plus the diameter, length, and quantity.
2
Confirm the Condition
Next, we agree the annealed, hot-finished, or cold-drawn condition with your machining plan.
3
Receive a Quotation
After that, a single reply returns the price, lead time, and document list.
4
Approve the Specification
You approve the dimensions, inspection level, and delivery terms in writing before we begin cutting.
5
Produce and Test
We then work, solution-anneal, and test your bar to the ordered condition.
6
Release and Ship
Finally, the bar ships with its certificates and export documents, and we confirm the delivery terms with you.
What Our Clients Say
Feedback from buyers and engineers who source nickel alloy materials from Southerly Alloy.
★★★★★
“The C-276 rod for our HCl recovery unit arrived with carbon and silicon on the certificate, exactly as our welding procedure required.”
★★★★★
“We ordered solution-annealed C-276 bar for an FGD retrofit; the hardness record came with the mill certificate, so incoming inspection passed first time.”
★★★★★
“One trial bar confirmed the ground finish and straightness before we placed the full reactor-shaft order.”
CERTIFICATIONS & QUALITY DOCUMENTATION
Certifications & Quality Documentation
Our production and inspection processes are certified to international standards, and every delivery ships with EN 10204 3.1 mill test certificates.
ISO 9001:2015
Quality Management System
PED 2014/68/EU
Pressure Equipment Directive
ASTM / ASME
Material Standards Compliance
EN 10204 3.1
Mill Test Certificates
FAQ
Frequently Asked Questions
Which ASTM specification covers Hastelloy C-276 bar and rod?
ASTM B574 / ASME SB574.
Is Hastelloy C-276 bar resistant to hydrochloric acid?
Yes. We supply it across a wide range of hydrochloric acid concentrations, subject to temperature limits.
Is Hastelloy C-276 bar approved for sour service?
Yes. We supply it to NACE MR0175 / ISO 15156, and we record hardness per heat within the applicable limits.
Which sizes of Hastelloy C-276 bar can you supply?
6–340 mm round bar, with rod from 3 mm and hex, square, and flat sections to 150 mm.
Can you supply custom Hastelloy C-276 bar and rod?
Yes. Peeling, grinding, and cut-to-length services cover diameters outside our stock range.
What is your MOQ for Hastelloy C-276 bar?
One bar for most stock diameters.
What are your trade terms for Hastelloy C-276 bar?
Mainly FOB; EXW and CIF can be quoted as well.
How is the price of Hastelloy C-276 bar calculated?
Mainly on weight; we fix the nickel, molybdenum, and tungsten share in the quotation.
What is the lead time for Hastelloy C-276 bar?
7-15 days for stock sizes; about 25 days for made-to-order annealed bar.
Do you provide EN 10204 3.1 or 3.2 certificates?
Yes. 3.1 comes with every heat; we arrange 3.2 and third-party witness on request.
REQUEST FOR QUOTATION
Need A Custom Alloy Solution?
Send the medium, concentration, and dimensions, and we quote stock or custom C-276 bar with price, lead time, and documents. Because we fix the anneal and inspection level before production, the bar we approve is the bar that ships.
Inconel 625 Bar and Rod
View Product →
Incoloy 825 Bar and Rod
View Product →
Inconel 600 Bar and Rod
View Product →
Monel 400 Bar and Rod
View Product →
Inconel 718 Bar and Rod
View Product →
Inconel 601 Bar and Rod
View Product →
Incoloy 800 / 800H / 800HT Bar and Rod
View Product →