NiCr16Fe7TiAl | 2.4694 Material Datasheet
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| Material Number | Material Name | Material Number (single) | Standard | Standard Status | Country | VDA 231-106 classification | Application temperature [°C] | |
|---|---|---|---|---|---|---|---|---|
| 2.4694 (Stahl-Eisen-Liste : 1999) | NiCr16Fe7TiAl | 2.4694 | Stahl-Eisen-Liste : 1999 | Replaced | Germany | 3.4 | ≤ 820 | 1) |
| 1) Remark: The material NiCr16Fe7TiAl has a composition that is similar to that of NiCr15Fe7TiAl (material number 2.4669). The alloy is hardenable and possesses high tensile strength up to 600 °C as well as high creep strength and creep strength depending on time up to 820 dgrees C and high resistance to oxidation up to 980 °C. Application for components for stationaryand flying gas turbines, high-temperature fasteners, bolts and springs for control rods in nuclear reactors. Application besides for petrochemical processes, inter alia in the cracking of ammonia as part of the heavy water production process, as well as for low-temperature applications. Outlet valves in combustion engines are an important field of application. In this, the alloy offers high strength at operating temperatures, high elevated temperature hardness and, therefore, resistance to wear as well as to corrosion in hot exhaust gases containing lead oxide, sulphur, bromine and chlorine. Processing properties: Formability: good (annealed) Weldability: not common |
Chemical Composition
| Al [%] | C [%] | Cr [%] | Cu [%] | Fe [%] | Mn [%] | Nb [%] | Ni [%] | P [%] | S [%] | Si [%] | Ti [%] | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Material Compliance
| REACh | RoHS |
|---|---|
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Mechanical Properties
| Semi-finished Product | Condition | Temperature [°C] | Specimen Direction | Tensile Strength [MPa] | Yield Strength (0.2% offset) [MPa] | Elongation A [%] | |
|---|---|---|---|---|---|---|---|
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Physical Properties
| Temperature [°C] | Density [g/cm³] | Young's Modulus [GPa] | Thermal Conductivity [W/(m*K)] | Specific Electrical Resistance [µΩm] | Mean Specific Heat Capacity [kJ/(kg*K)] | |
|---|---|---|---|---|---|---|
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Welding and Joining
| Procedure | Welding and Joining - Evaluation | Interpass Temperature [°C] | Added Materials | |
|---|---|---|---|---|
| blur | blur | blur | blur | 1) |
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Producer/Supplier/Trade names
| Tradename | Supplier |
|---|---|
| 2.4694 | INTERSTAHL Service GmbH, Wetter |
| Aeralloy 751 | Chr. Höver & Sohn GmbH & Co. KG, Lindlar |
| Alloy 751 | ROPA STAHLVERTRIEB GMBH, Bad Bergzabern |
| NiCr16Fe7TiAl | pauly STAHLHANDEL, Essen |
| Nicrofer 7016 TiAl-alloy 751 | VDM Metals GmbH, Werdohl |