Home / HAYNES® 617 alloy

Principal FeaturesNominal CompositionCreep and Stress-Rupture StrengthOxidation ResistanceTensile PropertiesThermal StabilityPhysical PropertiesHeat TreatmentHardness and Grain SizeFabrication and WeldingSpecifications and CodesDisclaimerAlloy Brochure

Principal Features

HAYNES® 617 alloy (UNS N06617) is a nickel-chromium-cobalt-molybdenum alloy with a good combination of metallurgical stability, strength, and oxidation resistance at high temperatures. The alloy is readily formed and welded by conventional techniques. HAYNES® 617 alloy is use in applications such as gas turbines for combustion cans, ducting, and transition lines. For modern applications, HAYNES® 230® alloy should be considered as a replacement.

*Please contact our technical support team if you have technical questions about this alloy.

Nominal Composition

Weight %
Nickel Balance
Cobalt 12.5
Chromium 22
Molybdenum 9
Manganese 0.2 max.
Silicon 0.2 max.
Iron 1
Titanium 0.3
Aluminum 1.2
Carbon 0.07
Boron 0.006 max.

Creep and Stress-Rupture Strength

Solution annealed Sheet

Temperature Creep Approximate Initial Stress to Produce Specified Creep in
10 Hours 100 Hours 1,000 Hours
°F °C % ksi MPa ksi MPa ksi MPa
1400 760 0.5 18.7 129 14.5 100 11 76
1 20.5 141 15.5 107 12 83
R 33* 228* 26 179 20 138
1500 816 0.5 13.2* 91* 10.2 70 7.7 53
1 14.0* 97* 10.8 74 8.5 59
R 23.5 162 17.0 117 12.2 84
1600 871 0.5 9.5 66 7.3 50 5.0* 34*
1 10.0 69 7.7 53 5.3* 37*
R 16.5 114 11.4 79 7.3 50
1700 927 0.5 6.5 45 4.3 30 2.9* 20*
1 7.4 51 4.8 33 3.2* 22*
R 11.7 81 7.4 51 4.5 31
1800 982 0.5 – – 2.9 20 1.7 12
1 – – 3.3 23 1.9 13
R – – 5.2 36 2.3 16

*Significant extrapolation

Oxidation Resistance

Comparative Oxidation Resistance in Flowing Air, 1008 Hours*

Material 1800°F (982°C) 2000°F (1093°C) 2100°F (1149°C) 2200°F (1204°C)
Average Metal Loss Average Metal Affected Average Metal Loss Average Metal Affected Average Metal Loss Average Metal Affected Average Metal Loss Average Metal Affected
Mils μm Mils μm Mils μm Mils μm Mils μm Mils μm Mils μm Mils μm
214® 0.1 3 0.3 8 0.1 3 0.2 5 0.1 3 0.5 13 0.1 3 0.7 18
230® 0.2 5 1.5 38 0.5 13 3.3 84 1.2 30 4.4 112 4.7 119 8.3 211
X 0.2 5 1.5 38 1.3 33 4.4 112 3.6 91 6.1 115 – – – –
601 0.4 10 1.7 43 1.3 33 3.8 97 2.8 71 6.5 165 4.4 112 7.5 191
625 0.4 10 1.9 48 3.5 89 7.8 198 18.3 465 20.2 513 – – – –
617 0.3 8 2.0 51 0.6 15 3.8 97 1 25 5.2 132 10.7 272 12.6 320
HR-120® 0.4 10 2.1 53 1 25 4.4 112 7.9 201 10.1 257 21.7 551 25.4 645
556® 0.4 10 2.3 58 1.5 38 6.9 175 10.4 264 17.5 445 – – – –
600 0.3 8 2.4 61 0.9 23 3.3 84 2.8 71 4.8 122 5.1 130 8.4 213

*Flowing air at a velocity of 7.0 ft/min (213.4 cm/min) past the samples. Samples cycled to room temperature once per week.

Amount of metal affected for high-temperature sheet (0.060 – 0.125”) alloys
exposed in still air

Alloy 1800°F (982°C), 8640 h 2100°F (1149°C), 8640 h
Metal Loss Average Metal Affected Metal Loss Average Metal Affected
mils μm mils μm mils μm mils μm
214® 0.1 3 0.2 5 – – – –
188 0.4 10 3 76 – – – –
230® 0.5 13 3.4 86 11.1 282 34 864
617 0.7 18 3.7 94 21.3 541 37.2 945
X 3 76 5.1 130 – – – –
556® 7.6 193 11.9 302 >247.5 >6287 >247.5 >6287
HR‐120® 9.2 234 14.4 366 43.7 1110 53 1346
HR-160® 2.6 66 17.7 450 7.6 193 58.7 1491

Samples cycled to room temperature once per month.

Dynamic Oxidation Testing (Burner Rig)

Alloy 1600°F (871°C)/2000 Hours 1800°F (982°C)/1000 Hours
Metal Loss Average Metal Affected Metal Loss Average Metal Affected
Mils µm Mils µm Mils µm Mils µm
214® 1.3 33 1.3 33 1.5 38 1.8 46
625 1.2 30 2.2 56 3.7 94 6.0 152
188 1.1 28 2.9 74 1.1 28 3.2 81
230® 0.9 23 3.9 99 2.8 71 5.6 142
556® 1.5 38 3.9 99 4.1 104 6.7 170
X 1.7 43 5.3 135 4.3 109 7.3 185
617 2.0 51 7.8 198 2.4 61 5.7 145
601 1.9 48 9.6 244 5.7 145 Through thickness
HR-120® – – – – 6.3 160 8.3 211
Alloy 2000°F (1093°C)/500 Hours 2100°F (1149°C)/200 Hours
Metal Loss Average Metal Affected Metal Loss Average Metal Affected
Mils µm Mils µm Mils µm Mils µm
214® 1.2 30 1.5 38 2.0 51 2.1 53
625 Consumed – – – – – –
188 10.9 277 12.5 318 8.0 203 9.7 246
230® 7.1 180 9.9 251 6.4 163 13.1 333
556® 9.9 251 12.1 307 11.5 292 14 356
X 11.6 295 14.0 356 13.9 353 15.9 404
617 13.3 338 20.9 531 13.8 351 15.3 389
601 – – – – 16.3 414 Through thickness
HR-120® – – – – – – – –

Burner rig oxidation tests were conducted by exposing, in a rotating holder, samples 0.375 inch x 2.5 inches x thickness (9.5mm x 64mm x thickness) to the products of combustion of fuel oil (2 parts No. 1 and 1 part No. 2), burned at an air to fuel ratio of about 50:1. The gas velocity was about 0.3 mach. Samples were automatically removed from the gas stream every 30 minutes and fan cooled to less than 500°F (260°C) and then reinserted into the flame tunnel.

Metallographic Technique used for Evaluating Environmental Tests Haynes

Tensile Properties

Typical Tensile Properties, Plate

Test Temperature 0.2% Offset Yield Strength Ultimate Tensile Strength Elongation
°F °C ksi MPa ksi MPa %
RT RT 53.4 368 117.2 808 53.3
1000 538 36.6 252 89.1 614 65.8
1200 469 34.4 237 91.2 629 69.2
1400 760 34.9 241 70.8 488 87.2
1600 871 31.0 214 41.3 285 97.9
1800 982 15.7 108 22.2 153 97.6
2000 1093 7.8 54 11.3 78 94.6

Typical Tensile Properties, Sheet

Test Temperature 0.2 % Offset Yield Strength Ultimate Tensile Strength Elongation
°F °C ksi MPa ksi MPa %
RT RT 55.1 380 121.4 837 50.9
1000 538 38.1 263 103.9 716 58.9
1200 469 38.0 262 104.9 723 75.2
1400 760 37.6 259 73.9 510 89.8
1600 871 28.7 198 38.3 264 131.7
1800 982 13.2 91 19.6 135 111.4
2000 1093 6.4 44 9.7 67 92.2

Thermal Stability

Room-Temperature Properties of Plate After Thermal Exposure

Condition 0.2% Yield Strength Ultimate Tensile Strength 4D Elongation Reduction of Area Impact Strength
ksi MPa ksi MPa % % ft.-lbs. J
Solution Annealed 50.2 346 116.3 802 56.3 50.9 186.5* 253*
+ 1200°F (649°C)/ 1,000 hr. 83.3 574 145.9 1006 37.6 40.0 53.5 73
+ 1200°F (649°C)/ 4,000 hr. 88.5 610 152.4 1051 34.4 36.4 53.4 72
+ 1200°F (649°C)/ 8,000 hr. 90.4 623 152.8 1054 34.3 36.6 51.5 70
+ 1400°F (760°C)/ 1,000 hr 71.6 494 138.7 956 39.7 45.2 57.0 77
+ 1400°F (760°C)/ 4,000 hr 67.9 468 136.5 941 38.6 41.2 51.3 70
+ 1400°F (760°C)/ 8,000 hr 64.5 445 136.0 938 37.1 36.9 35.5 48
+ 1400°F (760°C)/ 1,000 hr. 50.7 350 121.2 836 49.9 51.7 90.0 122
+ 1600°F (871°C)/ 4,000 hr. 49.7 343 119.7 825 48.0 51.3 80.6 109
+ 1600°F (871°C)/ 8,000 hr. 47.6 328 118.8 819 49.8 50.5 67.0 91

*Did not break

Physical Properties

Physical Property British Units Metric Units
Density RT
0.302 lb/in3
 RT
8.36 g/cm3
Melting Range 2430- 2510°F – 1330-1375°C –
Thermal Conductivity 400°F
113 BTU-in/ft2-hr-°F
 200°C 16.2 W/m-°C
800°F
137 BTU-in/ft2-hr-°F
 400°C 19.4 W/m-°C
1000°F
149 BTU-in/ft2-hr-°F
 500°C 20.9 W/m-°C
1200°F
161 BTU-in/ft2-hr-°F
 600°C 22.5 W/m-°C
1400°F
173 BTU-in/ft2-hr-°F
 700°C 24.0 W/m-°C
1600°F
185 BTU-in/ft2-hr-°F
 800°C 25.6 W/m-°C
1800°F
197 BTU-in/ft2-hr-°F
 900°C 26.1 W/m-°C
2000°F
209 BTU-in/ft2-hr-°F
 1000°C 28.7 W/m-°C
Mean Coefficient of Thermal Expansion 70-800°F 7.6 µin/in -°F 20-450°C 13.7 µm/m- °C
70-1000°F 7.7 µin/in -°F 20-500°C 13.8 µm/m- °C
70-1200°F 8.0 µin/in -°F 20-600°C 14.2 µm/m- °C
70-1400°F 8.4 µin/in -°F 20-700°C 14.7 µm/m- °C
70-1600°F 8.7 µin/in -°F 20-800°C 15.3 µm/m- °C
70-1800°F 9.0 µin/in -°F 20-900°C 15.8 µm/m- °C
70-2000°F 9.2 µin/in -°F 20-1000°C 16.2 µm/m- °C
Electrical Resistivity 70°F 48.1 µohm-in 21°C 122 µohm-cm
400°F 49.5 µohm-in 200°C 126 µohm-cm
800°F 50.3 µohm-in 400°C 128 µohm-cm
1000°F 51.5 µohm-in 500°C 130 µohm-cm
1200°F 52.4 µohm-in 600°C 131 µohm-cm
1400°F 52.8 µohm-in 700°C 133 µohm-cm
1600°F 52.7 µohm-in 800°C 134 µohm-cm
1800°F 53.9 µohm-in 900°C 134 µohm-cm
Dynamic Modulus of Elasticity 70°F
30.6 x 106psi
 20°C 211 GPa
400°F
29.0 x 106psi
 200°C 201 GPa
800°F
26.9 x 106psi
 400°C 188 GPa
1000°F
25.8 x 106psi
 500°C 180 GPa
1200°F
24.6 x 106psi
 600°C 173 GPa
1400°F
23.3 x 106psi
 700°C 166 GPa
1600°F
21.9 x 106psi
 800°C 157 GPa
1800°F
20.5 x 106psi
 900°C 148 GPa
2000°F
18.8 x 106psi
 1000°C 139 GPa

Heat Treatment

Unless otherwise specified, wrought HAYNES® 617 alloy is normally supplied in the solution annealed condition. The alloy is usually solution annealed in the range of 2100°F to 2150°F (1149°C to 1177°C), depending on product form, for a time commensurate with section thickness and rapidly cooled or water-quenched for optimum properties.

Hardness and Grain Size

Form Hardness Typical ASTM Grain Size
Sheet 88 HRBW 3 – 4.5
Plate 91 HRBW 3 – 5
Bar 88 HRBW 3 – 4.5

All samples tested in solution-annealed condition.
HRBW = Rockwell Hardness “B”, Tungsten Indentor.

Fabrication and Welding

HAYNES® 617 alloy is readily welded by Gas Tungsten Arc (GTAW), Gas Metal Arc (GMAW), Shielded Metal Arc (SMAW), electron bean welding, and resistance welding techniques. Submerged Arc welding is not recommended, as this process is characterized by high heat input to the base metal and slow cooling of the weld. These factors can increase weld restraint and promote cracking.

Base Metal Preparation

The joint surface and adjacent area should be thoroughly cleaned before welding. All grease, oil, crayon marks, sulfur compounds, and other foreign matter should be removed. Contact with copper or copper-bearing materials in the joint area should be avoided. It is preferable, but not necessary, that the alloy be in the solution-annealed condition when welded.

Filler Metal Selection

Matching composition filler metal is recommended for joining alloy 617. Please see the Haynes Welding SmartGuide for suggested filler metals for dissimilar welds.

Preheating, Interpass Temperatures, and Post-Weld Heat Treatment

Preheat is not required. Preheat is generally specified as room temperature (typical shop conditions).   Interpass temperature should be maintained below 200°F (93°C). Auxiliary cooling methods may be used between weld passes, as needed, providing that such methods do not introduce contaminants. Post-weld heat treatment is not generally required for 617 alloy.

Specifications and Codes

Specifications

HAYNES® 617 alloy (N06617, W86117)
Sheet, Plate & Strip AMS 5888AMS 5889SB 168/B 168P = 43
Billet, Rod & Bar SB 166/B 166B 472AMS 5887P= 43
Coated Electrodes SFA 5.11/A 5.11(ENiCrCoMo-1)F = 43
Bar Welding Rods SFA 5.14/A 5.14(ERNiCrCoMo-1)F = 43
Seamless Pipe & Tube SB 167/B 167P =  43
Weld Pipe & Tube –
Fittings –
Forgings SB 564/B 564P= 43
DIN –
Others –

 

Codes

HAYNES® 617 alloy (N06617, W86117)
ASME Section l
1650°F (899°C)4
Section lll Class 1 –
Class 2 –
Class 3 –
Section lV HF-300.2 –
Section Vlll Div. 1
1800°F (982°C)4Code Case 27761650°F (899°C)19
Div. 2 –
Section Xll –
B16.5 –
B16.34 –
B31.1
1200°F (649°C)4
B31.3 –

1Approved material forms: Plate, Sheet, Bar, Forgings, seamless pipe/tube
2Approved material forms: Bolting

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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