HASTELLOY® W

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Principal Features

HASTELLOY® W alloy (UNS N10004) is a solid-solution-strengthened superalloy 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

HASTELLOY® W alloy Physical Properties

Physical Properties Customary 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% 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

Condition Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation Reduction of area
- °F °C ksi MPa ksi MPa % %
As-Welded 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% Yield Strength Ultimate Tensile Strength Elongation Reduction of area
- °F °C ksi MPa ksi MPa % %
As-Welded 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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