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.
| Tensile strength: | 45.40 |
| Yield strength: | 105.40 |
| Elongation: | 70.00% |
15.00-17.00%
14.50-16.50%
4.00-7.00%
3.00-4.50%
2.50% max
1.00% max
0.35% max
0.08% max
0.04% max
0.03% max
0.01% max
Balance
| 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 |
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.
| DENSITY | 8.89 g/cm³ | 0.321 lb/in³ |
| MELTING POINT | 1325-1370°C | 2415-2500°F |
| 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) |
| UNS Number | N10276 |
| WNR Number | 2.4819 |
| Standards | ASTM B564, B574, B575, B619, B622, B626, B366, B462, B775 |
| WELDING ELECTRODES | INCONEL welding electrode C-276 INCO-WELD welding electrode 686CPT |
| FILLERS | INCONEL filler metal C-276 INCO-WELD filler metal 686CPT |
Complete the form below to make an enquiry or request a quote and one of our team will get back to you shortly.
