Manufacture Hastelloy C276 Nickel Alloy Sheet for Heat Exchanger
1 . Descriptions:
Hastelloy C276 UNS N10276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments. The high nickel and molybdenum contents make the nickel steel alloy especially resistant to pitting and crevice corrosion in reducing environments while chromium conveys resistance to oxidizing media. The low carbon content minimizes carbide precipitation during welding to maintain corrosion resistance in as-welded structures. This nickel alloy is resistant to the formation of grain boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process application in an as welded condition.
Although there are several variations of the Hastelloy nickel alloy, Hastelloy C-276 is by far the most widely used.
Alloy C-276 is widely used in the most severe environments such as chemical processing, pollution control, pulp and paper production, industrial and municipal waste treatment, and recovery of sour natural gas.
2 . Chemical Composition:
| Grade | ％ | C | S | Mn | P | S | Ni | Cr | Mo | Fe | Co | W | V |
| Hastelloy C276 | Min | 14.5 | 15.0 | 4.0 | 3.0 | ||||||||
| Max | 0.01 | 0.08 | 1.0 | 0.04 | 0.03 | Margin | 16.5 | 17.0 | 7.0 | 2.5 | 4.5 | 0.35 |
3 . Nominal Mechanical Properties
| Density g/cm3 | Melting Range °C | Tensile Strength | Yield Strength | Elongation |
| Rm N/mm2 | RP 0.2N/mm2 | A5% | ||
| 8.89 | 1325-1370 | >741Mpa | >347Mpa | 67 |
4 . Applications:
The key factors influencing corrosion resistance of this material are the control of impurity S,P, gas
content O,N and key elements C,Si, etc.It depends on the control of production process, such as the
choice of heating temperature and heat preservation time of forging, such as the guarantee of forging
ratio, such as the guarantee of solid solution treatment, etc.
6 . Available Product Forms:
Pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire
