Alloy Wire International
Datasheet: Hastelloy˘ C-276
Hastelloy˘ C-276
This 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. Hastelloy C-276 is considered to be the most versatile corrosion resistant alloy available, as it is resistant to the formation of grain boundary precipitates in the weld heat-affected zone; this makes it ideal for most chemical process applications in an as welded condition. Hastelloy C-276 also has exceptional resistance to pitting, stress-corrosion cracking and oxidizing atmospheres, as well as excellent resistance to multiple different chemical environments.
Hastelloy C-276 is also known as Nicrofer 5716, Superimphy 276, and Inconel C-276.
Available in all profile options
Key Features
Hastelloy C-276 offers the following key features:
Excellent corrosion resistance in a wide range of corrosive media including, sulphur compounds and chloride ions.
Excellent resistance to pitting, crevice corrosion and stress corrosion cracking.
Withstands the corrosive effects of wet chlorine gas, hypochlorite and chlorine dioxide.
Good for sea water applications.
Typical Applications
Hastelloy C-276 is known to be suitable for the following applications:
Pollution control
Chemical processing
Waste treatment
Marine engineering
Pulp and paper production
Designations
W.Nr 2.4819
UNS N10276
AWS 054
Specifications
ASTM B574
ASTM B575
ASTM B619
ISO 15156-3 (NACE MR 0175)
Chemical Composition
The chemical composition of Hastelloy C-276 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| Mo | 15.00 | 17.00 |
| Cr | 14.50 | 16.50 |
| Fe | 4.00 | 7.00 |
| W | 3.00 | 4.50 |
| Co | – | 2.50 |
| C | – | 0.01 |
| Si | – | 0.08 |
| Mn | – | 1.00 |
| V | – | 0.35 |
| P | – | 0.04 |
| S | – | 0.03 |
| Ni | bal |
Alloy Details
Hastelloy C-276 density, melting point, coefficient of expansion, and modulus of elasticity is indicated in the table below:
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.89 g/cm³ | 1370 °C | 11.2 μm/m °C (20 – 100 °C) | 78.6 kN/mm² | 205.5 kN/mm² |
| 0.321 lb/in³ | 2500 °F | 6.2 x 10-6 in/in °F (70 – 212 °F) | 11400 ksi | 29806 ksi |
Heat treatment of finished parts
The typical heat treatment of Hastelloy C-276:
| Condition as supplied by AWI | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed or Spring Temper | Stress Relieve | 400 – 450 °C (750 – 840 °F) | 2 Hr | Air |
Properties
The typical mechanical properties of Hastelloy C-276:
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <1050 N/mm² | <152 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +400 °C | -330 to +750 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 1300 – 1700 N/mm² | 189 – 247 ksi |
| Approx. operating temperature depending on load** and environment | -200 to +400 °C | -330 to +750 °F |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Haynes International
