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Special Metals UDIMET® alloy D-979 Fe-Ni Alloy
| Category | Metal , Nonferrous Metal , Nickel Alloy |
| Manufacturer | Special Metals (includes the former Inco Alloys International Inc.) |
| Trade Name | UDIMET® |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
| Download PDF | Special Metals UDIMET® alloy D-979 Fe-Ni Alloy.pdf  |
| Price | EMAIL US sales@lookpolymers.com |
Material Notes:
UDIMET® alloy D-979 (UNS N09979) is an iron-nickel alloy designed for turbine disc applications at temperatures up to 1200-1400°F (649-760°C). Hardened by a complex precipitation of intermetallic phases, the alloy combines corrosion resistance with excellent tensile and stress rupture strength.Information Provided by Special Metals Corporation
| Physical Properties | Metric | English | Comments |
|---|---|---|---|
| Density | 8.19 g/cc | 0.296 lb/in³ |
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Rupture Strength | 69.0 MPa @Temperature 871 °C, Time 3.60e+6 sec |
10000 psi @Temperature 1600 °F, Time 1000 hour |
|
| 145 MPa @Temperature 816 °C, Time 3.60e+6 sec |
21000 psi @Temperature 1500 °F, Time 1000 hour |
||
| 250 MPa @Temperature 760 °C, Time 3.60e+6 sec |
36300 psi @Temperature 1400 °F, Time 1000 hour |
||
| 380 MPa @Temperature 704 °C, Time 3.60e+6 sec |
55100 psi @Temperature 1300 °F, Time 1000 hour |
||
| 515 MPa @Temperature 649 °C, Time 3.60e+6 sec |
74700 psi @Temperature 1200 °F, Time 1000 hour |
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 13.7 µm/m-°C @Temperature 93.0 °C |
7.61 µin/in-°F @Temperature 199 °F |
|
| Thermal Conductivity | 12.6 W/m-K | 87.4 BTU-in/hr-ft²-°F | |
| Melting Point | 1220 - 1390 °C | 2230 - 2530 °F | |
| Solidus | 1220 °C | 2230 °F | |
| Liquidus | 1390 °C | 2530 °F |
| Component Elements Properties | Metric | English | Comments |
|---|---|---|---|
| Aluminum, Al | 0.75 - 1.3 % | 0.75 - 1.3 % | |
| Boron, B | 0.0080 - 0.016 % | 0.0080 - 0.016 % | |
| Carbon, C | <= 0.080 % | <= 0.080 % | |
| Chromium, Cr | 14 - 16 % | 14 - 16 % | |
| Iron, Fe | 20.804 - 34.542 % | 20.804 - 34.542 % | Balance |
| Manganese, Mn | <= 0.75 % | <= 0.75 % | |
| Molybdenum, Mo | 3.0 - 4.5 % | 3.0 - 4.5 % | |
| Nickel, Ni | 42 - 48 % | 42 - 48 % | |
| Silicon, Si | <= 0.75 % | <= 0.75 % | |
| Titanium, Ti | 2.7 - 3.3 % | 2.7 - 3.3 % | |
| Tungsten, W | 3.0 - 4.5 % | 3.0 - 4.5 % |
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