ALLOY C276 / INCONEL C276

  • N10276
  • 2.4819

ALLOY C276 / INCONEL C276

For over fifty years INCONEL® alloy C276 has been associated with outstanding corrosion resistance in both acid and alkali media. The Nickel-Chromium-Molybdenum superalloy combined with a controlled amount of Tungsten has made this the material of choice for severe corrosive environments. The low carbon content minimises the carbide precipitation during heat treatment and during welding. As a result in as-welded structures, the excellent pitting and crevice corrosion resistance is maintained. The welding consumable is often overmatched with lower alloyed materials to provide security in the weld zone.

Key properties

(in annealed condition)
Tensile strength: 45.40
Yield strength: 105.40
Elongation: 70.00%

Mo

15.00-17.00%

Cr

14.50-16.50%

Fe

4.00-7.00%

W

3.00-4.50%

Co

2.50% max

Mn

1.00% max

V

0.35% max

Si

0.08% max

P

0.04% max

S

0.03% max

C

0.01% max

Ni

Balance

INVENTORY

Product form Size range from Size range to
Alloy C276 pipe 0.5 in 8 in
Alloy C276 tube 12 mm 260 mm
Alloy C276 pipe fittings 0.5 in 8 in
Alloy C276 flanges 0.5 in 8 in
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APPLICATIONS

pressure-vessle

Alloy C276 can be used in a variety of applications

  • Pressure Vessels
  • Reactors
  • Mixers and Agitators
  • Scrubbers
  • Dampers
  • Heat Exchangers
  • Venturis
  • Evaporators
  • Solvent Recovery Plants
  • Pumps and Valves

ABOUT ALLOY C276 / INCONEL C276

Inconel Alloy C276 has been successfully adopted in chemical processes containing ferric and cupric chloride ions, chlorine, hypochlorite, chlorine dioxide, organic acids, acetic anhydride, seawater, brine and sour oil and gas wellhead fluids.

Applications for the alloy include power station flue gas desulphurisation components like ducts and fans, louvers and gas valves, dampers, scrubbers, chimney stack linings and containment housings. In chemical, pharmaceutical and food processing the mixing vessels and reaction chambers together with heat exchangers and transfer piping, valves and pumps have been manufactured in INCONEL® alloy C276. Aggressive environments in the pulp and paper and waste fluid treatment plants will use INCONEL alloy C276 as a result of the overall corrosion resistance provided by the alloy in the most aggressive sections of the system.

Corrosion Resistance

INCONEL alloy C276 is resistant to general corrosion, stress corrosion cracking, pitting and crevice corrosion in a broad range of severe environments. Its resistance to carbide precipitation during welding maintains corrosion resistance in the heat-affected zones of welded joints. It has exceptional resistance to sulphuric acid and hydrochloric acid. It resists many of the most severe media encountered in chemical processing, including reducing and oxidising acids, highly oxidising neutral, and acid chlorides, solvents, formic and acetic acids, acetic anhydride, wet chlorine gas, hypochlorites, and chlorine solutions. It has excellent resistance to phosphoric acid.

At all temperatures below the boiling point and at concentrations lower than 65 wt %, tests have shown corrosion rates of less than 5 mpy (0.13 mm/y). INCONEL® alloy C276 exhibits excellent resistance to corrosion by seawater, especially under crevice conditions which induce attack in other commonly used materials.

To learn more about our stock of Alloy C276 pipe and tube contact us, or fill in our online quote request form and one of our team will get back to you.

Properties of Alloy C276

DENSITY    8.89 g/cm³ | 0.321 lb/in³
MELTING POINT 1325-1370°C | 2415-2500°F

ALLOY C276 MECHANICAL PHYSICAL PROPERTIES

Property 21°C 100⁰C 200⁰C 300⁰C 300⁰C
Ultimate Tensile Strength for sheet ≤ 5 mm thick 750-1000        
Ultimate Tensile Strength for sheet 5 to ≤ 20 mm thick 700-950        
Ultimate Tensile Strength for bar ≤ 90 mm thick 700-950        
0.2% Yield Strength for sheet ≤ 50 mm thick   280 240 220 195
0.2% Yield Strength for sheet 5 to ≤ 20 mm thick   255 255 200 170
0.2% Yield Strength for bar ≤ 90 mm thick   255 225 200 170
Elongation, % for sheet ≤ 5 mm thick 30        
Elongation, % for sheet 5 to ≤ 20 mm thick 25        
Elongation, % for bar ≤ 90 mm thick 35        
Charpy Impact V-notch mean value / J 96 (56 when welded)        
Charpy Impact V-notch indicidual value / J 67 (39 when welded)        

Alloy 625 Specifications

UNS Number N10276
WNR Number 2.4819
Standards ASTM B564, B574, B575, B619, B622, B626, B366, B462, B775

Welding Consumables

WELDING ELECTRODES INCONEL welding electrode C-276
INCO-WELD welding electrode 686CPT
FILLERS INCONEL filler metal C-276
INCO-WELD filler metal 686CPT
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