HASTELLOY® W alloy
Principal Features
HASTELLOY® W alloy (UNS N10004) is a solid-solution-strengthened super alloy that was developed primarily as a filler metal for welding of dissimilar alloys. It displays excellent dissimilar welding characteristics, and is widely used for that purpose in the gas turbine and aerospace industries. The properties of dissimilar weld joints made with alloy W are dependents upon the alloys joined, but are generally acceptable for a wide variety of combinations. Alloy W is also used as a wrought alloy for a limited number of ring-type applications in older gas turbine engines. HAYNES® 242® alloy is a more modern alloy, and should be considered as a substitute for alloy W in these ring applications (ask for publication H-3079).
*Please contact our technical support team if you have technical questions about this alloy.
Nominal Composition
Weight % | |
Nickel | 63 Balance |
Cobalt | 2.5 max. |
Iron | 6 |
Chromium | 5 |
Molybdenum | 24 |
Tungsten | 1 max. |
Manganese | 1 max. |
Silicon | 1 max. |
Vanadium | 0.6 max. |
Carbon | 0.12 max. |
Stress-Rupture Strength
Bar (AMS 5755)
Test Temperature | Approximate Initial Stress to Produce Rupture in: | ||||||
10 h | 100 h | 1000 h | |||||
°F | °C | ksi | MPa | ksi | MPa | ksi | MPa |
1300 | 705 | – | – | 34.5 | 238 | 27.5 | 190 |
1400 | 760 | 33.0 | 228 | 26.0 | 179 | 19.0 | 130 |
1500 | 815 | 24.8 | 171 | 18.0 | 124 | 12.4 | 85 |
1600 | 870 | 17.4 | 120 | 12.0 | 83 | 8.0 | 55 |
1700 | 925 | 11.7 | 81 | 7.9 | 54 | 5.2 | 36 |
1800 | 980 | 7.9 | 54 | 5.2 | 36 | 3.2 | 22 |
Guided Bend Test Results
1/2 inch (12.7) Plate Weldments (GTAW) Using Alloy W Filler
Base Materials | Bend Radius | Results | ||||||
188/ MULTIMET® | 2t | No Cracks | ||||||
625/ 718 | 2t | No Cracks | ||||||
304 SS/ Carbon Steel | 2t | No Cracks | ||||||
Heat Treatment
Weld Deposits (A), Wrought Bar (B)
(A) None (B) 2165 °F (1185 °C)/15 minutes/WQ
Physical Properties
HASTELLOY® W alloy Physical Properties
Physical Properties | British Units | Metric Units | ||
Density | RT |
0.325 lb/in3 |
RT |
9.00 g/cm3 |
Melting Temperature | 2350-2510°F | – | 1290-1375°C | – |
Mean Coefficient of Thermal Expansion | 70-800°F | 7.3 µin/in -°F | 20-500°C |
13.2 x 10-6m/m·°C |
70-1000°F | 7.4 µin/in -°F | 20-600°C |
13.2 x 10-6m/m·°C |
|
70-1200°F | 7.4 µin/in -°F | 20-700°C |
13.5 x 10-6m/m·°C |
|
70-1400°F | 7.8 µin/in -°F | 20-800°C |
14.2 x 10-6m/m·°C |
|
70-1600°F | 8.2 µin/in -°F | 20-900°C |
14.8 x 10-6m/m·°C |
|
70-1800°F | 8.4 µin/in -°F | 20-1000°C |
115.3 x 10-6m/m·°C |
Tensile Properties
Bar (AMS 5755):
Test Temperature | 0.2% Offset Yield Strength | Ultimate Tensile Strength | Elongation | |||
°F | °C | ksi | MPa | ksi | MPa | % |
RT | RT | 75.5 | 520 | 139.8 | 965 | 51.0 |
1000 | 538 | 54.0 | 370 | 120.8 | 835 | 52.5 |
1200 | 649 | 52.9 | 365 | 103.5 | 715 | 27.0 |
1400 | 760 | 55.5 | 385 | 88.5 | 610 | 20.3 |
1600 | 871 | 48.8 | 335 | 60.5 | 415 | 31.8 |
1800 | 982 | 23.6 | 165 | 32.4 | 225 | 47.5 |
2000 | 1093 | 10.6 | 73 | 17.4 | 120 | 79.0 |
RT=Room Temperature
Typical All-Weld Metal Tensile Properties
Gas Tungsten
Test Temperature
0.2% Offset Yield Stregth | Ultimate Tensile Strength | Elongation | Reduction of area | |||||
As-Welded | °F | °C | ksi | MPa | ksi | MPa | % | % |
RT | RT | 80 | 550 | 120 | 830 | 35 | 27 | |
1600 | 871 | 40 | 275 | 43 | 295 | 45 | 53 | |
Aged 1000 h 1200°F (650°C) | RT | RT | 115 | 795 | 160 | 1105 | 14 | 16 |
– | – | – | – | – | – | – | – | |
Aged 1000 h 1400°F (760°C) | 1400 | 760 | 64 | 440 | 84 | 580 | 27 | 38 |
– | – | – | – | – | – | – | – |
Gas Metal
Condition | Test Temperature | 0.2% Offset Yield Strength | Ultimate Tensile Strength | Elongation | Reduction of area | |||
As-Welded | °F | °C | ksi | MPa | ksi | MPa | % | % |
RT | RT | 80 | 550 | 127 | 875 | 38 | 32 | |
1600 | 871 | 42 | 290 | 45 | 310 | 41 | 42 | |
Aged 1000 h 1200°F (650°C) | RT | RT | 110 | 760 | 153 | 1055 | 15 | 16 |
– | – | – | – | – | – | – | – | |
Aged 1000 h 1400°F (760°C) | 1400 | 760 | 58 | 400 | 82 | 565 | 30 | 47 |
– | – | – | – | – | – | – | – |
Shielded Metal
Condition | Test Temperature | 0.2% Offset Yield Strength | Ultimate Tensile Strength | Elongation | Reduction of Area | |||
As-Welded | °F | °C | ksi | MPa | ksi | MPa | % | % |
RT | RT | 76 | 525 | 110 | 760 | 25 | 22 | |
1600 | 871 | 36 | 250 | 38 | 260 | 14 | 15 | |
Aged 1000 h 1200°F (650°C) | RT | RT | 108 | 745 | 128 | 885 | 8 | 8 |
- | - | - | - | - | - | - | - | |
Aged 1000 h 1400°F (760°C) | 1400 | 760 | 57 | 395 | 77 | 530 | 11 | 14 |
- | - | - | - | - | - | - | - |
Transverse Tensile Properties for 1/2 incn (12.7mm) Plate Weldments (GTAW) Using Alloy W Filler*
Base Materials | Test Temperature | 0.2% Offset | Ultimate Tensile | Elongation | Reduction of Area | |||
- | °F | °C | ksi | MPa | ksi | MPa | % | % |
X | RT | RT | 58 | 400 | 113 | 780 | 52 | 55 |
1600 | 871 | 33 | 230 | 42 | 290 | 39 | 65 | |
188 | RT | RT | 73 | 505 | 128 | 885 | 201 | 301 |
1600 | 871 | 51 | 350 | 58 | 400 | 361 | 601 | |
MULTIMET® | RT | RT | 62 | 425 | 116 | 800 | 49 | 65 |
1600 | 871 | 32 | 220 | 42 | 290 | 28 | 42 | |
625 | RT | RT | 69 | 475 | 119 | 820 | 63 | 63 |
1600 | 871 | 35 | 240 | 44 | 305 | 58 | 91 | |
718 | RT | RT | 68 | 470 | 125 | 860 | 231 | 311 |
- | - | - | - | - | - | - | - | |
304 SS | RT | RT | 48 | 330 | 90 | 620 | 62 | 69 |
- | - | - | - | - | - | - | - | |
Carbon Steel | RT | RT | 60 | 415 | 72 | 495 | 14 | 50 |
- | - | - | - | - | - | - | - | |
188/ MULTIMET® | RT | RT | 66 | 455 | 117 | 805 | 35 | 64 |
1600 | 871 | 34 | 235 | 47 | 325 | 19 | 19 | |
625/ 718 | RT | RT | 62 | 425 | 131 | 905 | 432 | 422 |
1600 | 871 | 39 | 270 | 48 | 330 | 51 | 95 | |
304 SS/ Carbon Steel | RT | RT | 51 | 350 | 71 | 490 | 17 | 51 |
- | - | - | - | - | - | - | - |
*Failures in base metal unless otherwise indicated
1Failures in weld 2Failures in weld and base metal
All values are averages of 2-4 tests
Specifications
Bar Wire | AMS 5786 | AWS A5.14 & ASME SFA 5.14 (ERNiMo-3) | |||
Coated Electrodes | - | AWS A5.11 & ASME SFA 5.11 (ENiMo-3) | |||
Bar, Rings and Forgings | AMS 5755 | - |
Disclaimer
Haynes International makes all reasonable efforts to ensure the accuracy and correctness of the data displayed on this site but makes no representations or warranties as to the data’s accuracy, correctness or reliability. All data are for general information only and not for providing design advice. Alloy properties disclosed here are based on work conducted principally by Haynes International, Inc. and occasionally supplemented by information from the open literature and, as such, are indicative only of the results of such tests and should not be considered guaranteed maximums or minimums. It is the responsibility of the user to test specific alloys under actual service conditions to determine their suitability for a particular purpose.
For specific concentrations of elements present in a particular product and a discussion of the potential health affects thereof, refer to the Safety Data Sheets supplied by Haynes International, Inc. All trademarks are owned by Haynes International, Inc., unless otherwise indicated.
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