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C-276 / C-22 Hastelloy Round Bar
C-276 / C-22 Hastelloy Bright Bar
C-276 / C-22 Hastelloy Square Bar
C-276 / C-22 Hastelloy Hex ( Hexagon Bar, Hexagonal Bar) Bar
C-276 / C-22 Hastelloy Flat Bar
C-276 / C-22 Hastelloy Seamless Pipes Tubes
C-276 / C-22 Hastelloy Welded Pipes Tubes
C-276 / C-22 Hastelloy Erw Pipes Tubes
C-276 / C-22 Hastelloy Fabricated Pipes Tubes
C-276 / C-22 Hastelloy Pipe Fittings
C-276 / C-22 Hastelloy Buttweld Fittings
C-276 / C-22 Hastelloy Forged Fittings
C-276 / C-22 Hastelloy Welded Fittings
C-276 / C-22 Hastelloy Threaded Steel Pipe Fitting
C-276 / C-22 Hastelloy Tube Fittings
C-276 / C-22 Hastelloy Elbow
C-276 / C-22 Hastelloy Flanges
C-276 / C-22 Hastelloy Sheet Plates Coil
C-276 / C-22 Hastelloy Designer Plate Sheet
C-276 / C-22 Hastelloy Fasteners
C-276 / C-22 Hastelloy Nut Bolts
C-276 / C-22 Hastelloy Screws
C-276 / C-22 Hastelloy Washer
C-276 / C-22 Hastelloy Welding Rod

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Hastelloy C-276 Alloy

Common Trade Names: Hastelloy C276, Alloy C-276, Nickel C-276; Nickelvac HC-276, Inconel C-276, Nicrofer 5716.

Alloy (UNS N10276, W.Nr. 2.4819) is known for its corrosion resistance in a wide range of aggressive media. The high molybdenum content imparts resistance to localized corrosion such as pitting. The low carbon minimizes carbide precipitation during welding to maintain resistance to intergranular attack in heat-affected zones of welded joints. It is used in chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment and the recovery of “sour” natural gas. Applications in air pollution control include stack liners, ducts, dampers, scrubbers, stack-gas re-heaters, fans and fan housings. In chemical processing, the alloy is used for components including heat exchangers, reaction vessels, evaporators and transfer piping.

Hastelloy C-276 Alloy has excellent resistance to a wide variety of chemical process environments, including strong oxidizers such as ferric and cupric chlorides, hot contaminated media (organic and inorganic), chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions. It is used in flue gas desulfurization systems because of its excellent resistance to sulfur compounds and chloride ions encounted in most scrubbers. C-276 alloy has excellent resistance to pitting and to stress-corrosion cracking. It is also one of the few materials that withstands the corrosive effects of wet chlorine gas, hypochlorite, and chlorine dioxide.

Available Product Forms:

Pipe, tube, fitting, flange, sheet, strip, plate, round bar, flat bar, fastener, forging stock, hexagon and wire



Hastelloy alloy C-276 is designated as UNS N10276 and Werkstoff Nr. 2.4819. It is listed in NACE MR0175 for oil and gas service.

Rod, Bar, Wire and Forging Stock: ASTM B 462 (Rod, Bar and Forging Stock), ASTM B 564 & ASME SB 564 (Forgings), ASTM B 574 & ASME SB 574 (Rod, Bar and Wire), ISO 9723 (Rod and Bar), ISO 9724 (Wire), ISO 9725 (Forgings), DIN 17752, DIN 17753, DIN 17754

Plate, Sheet and Strip: ASTM B 575; ASTM B 906; ASME SB 575; ASME SB 906, ISO 6208, DIN 17750
Pipe and Tube: - ASTM B 622; ASTM B 829 & ASME SB 622 ASME SB 829 (Seamless Tube), ASTM B 626; ASTM B 751 & ASME SB 626; ASME SB 751 (Welded Tube), ASTM B 619; ASTM B 775 & ASME SB 619; ASME SB 775 (Welded Pipe), ISO 6207 (Seamless Tube), DIN 17751

Welding Products: Filler Metal C-276 - AWS A5.14 / ERNiCrMo-4, Welding Electrode C-276 - AWS A5.11 / ENiCrMo-4.

Others: ASTM B 366 & ASME SB 366 (Fittings), DIN 17744 (chemical composition)


Hastelloy C-276– Nickel- Molybdenum-Chromium Alloy

Hastelloy C-276 is a Nickel-Molybdenum-Chromium alloy with the addition of Tungsten, has excellent corrosion resistance in a wide range of corrosive media and is especially resistant to pitting and crevice corrosion.

Chemical Composition of Hastelloy C-276

The compositional range for Hastelloy C-276 is provided in the table below.




55 %


15 - 17 %


14.5 - 16.5 %


4 - 7 %


3 - 4.5 %

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Typical Properties of Hastelloy C-276

Typical properties of Hastelloy C-276 are covered in the following table.





8.89 g/cm3

0.321 lb/in3

Melting Point

1370 °C

2500 °F

Co-Efficient of Expansion

11.2 μm/m.°C
(20-100 °C)

6.2x10-6 in/in.°F
(70-212 °F)

Modulus of Rigidity

78.6 kN/mm2

11400 ksi

Modulus of Elasticity

205.5 kN/mm2

29806 ksi

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Properties of Supplied Materials and Heat Treated Materials

Condition of Supply

Heat Treatment (After Forming)

Annealed/Spring Temper

Stress relieve at 400 - 450°C (750 - 840°F) for 2 hours and air cool.


Approx Tensile Strength

Approx Service Temp.


850 - 1050 N/mm2

123 - 152 ksi

-200 to +400°C

-330 to +750°F

Spring Temper

1300 - 1600 N/mm2

189 - 232 ksi

-200 to +400°C

-330 to +750°F

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Relevant Standards

Hastelloy C-276 is covered by the following standards:
· ASTM B619
· ASTM B574

Equivalent Materials

Hastelloy C-276 is the tradename of Special Metals Group of Companies and equivalent to:
· W.NR 2.4819
· UNS N10276
· AWS 054

Applications of Hastelloy C-276

Hastelloy C-276 typically finds application in:
· Pollution control,
· Chemical processing,
· Waste treatment,
· Marine engineering,
· Pulp and paper production.

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