UNS N06617 pipes and tubes are a good fit for high temperature systems where alloys such as 600 and 800HT run short of creep strength or oxidation resistance. Also called Inconel 617 or Alloy 617, this nickel based alloy contains chromium, cobalt, molybdenum and aluminium, helping it remain reliable in service above 1000°C. Amardeep Steel supplies Inconel 617 pipes and tubes in seamless form to ASTM B167 and welded pipe to ASTM B546. Each order is supplied with EN 10204 3.1 mill test certificates and complete heat traceability. Compare our Inconel 625 pipes and tubes and Inconel 601 pipes and tubes, or browse our Inconel pipes and tubes.
What Are UNS N06617 Pipes and Tubes?
Alloy 617 is a solid solution strengthened nickel alloy. Cobalt and molybdenum give it high creep and rupture strength, while chromium and aluminium form a protective oxide that resists oxidation and carburisation in hot, cycling service. It keeps useful strength well above the range of 800HT and 625, which is why it is used in gas turbine hot sections, high temperature process plant and gas cooled reactor designs.
Why Cobalt and Aluminium Matter
Cobalt (10% to 15%) and molybdenum (8% to 10%) strengthen the nickel matrix at high temperature. Aluminium (0.8% to 1.5%) works with chromium to form an adherent oxide layer that holds up under thermal cycling, where many alloys lose their scale.
Inconel 617 Pipe and Tube Specifications
Parameter | Details |
|---|---|
Grade | UNS N06617, Inconel 617, Alloy 617, W.Nr 2.4663 |
Seamless pipe and tube | ASTM B167 / ASME SB167 |
Welded pipe | ASTM B546 / ASME SB546 (electric fusion welded) |
Pipe sizes | 1/2" to 6" NB, SCH 5S, 10S, 40S, 80S; larger on request |
Tube sizes | Small and medium bore OD to the purchase specification |
Condition | Solution annealed |
Length | Random, fixed and cut lengths |
Ends | Plain end and bevelled end |
Test Certificate | EN 10204 3.1, with 3.2 available on request |
Inconel 617 Chemical Composition
Element | Content (%) |
|---|---|
Nickel (Ni) | 44.5 min |
Chromium (Cr) | 20.0 to 24.0 |
Cobalt (Co) | 10.0 to 15.0 |
Molybdenum (Mo) | 8.0 to 10.0 |
Aluminium (Al) | 0.8 to 1.5 |
Carbon (C) | 0.05 to 0.15 |
Iron (Fe) | 3.0 max |
Manganese (Mn) | 1.0 max |
Silicon (Si) | 1.0 max |
Titanium (Ti) | 0.6 max |
Copper (Cu) | 0.5 max |
Sulfur (S) | 0.015 max |
Boron (B) | 0.006 max |
UNS N06617 Mechanical Properties
Property (annealed, ASTM B167) | Value |
|---|---|
Tensile Strength, min | 655 MPa to 760 MPa (per ASTM B167 ) |
Yield Strength (0.2% offset), min | 240 MPa (35 ksi) |
Elongation in 50 mm, min | 35% |
Inconel 617 Physical Properties
Property (20°C) | Value |
|---|---|
Density | 8.36 g/cm³ |
Melting range | 1332°C to 1380°C |
Thermal conductivity | 13.6 W/m·K |
Mean thermal expansion (20°C to 100°C) | 11.6 µm/m·°C |
Modulus of elasticity | 211 GPa |
Electrical resistivity | 1.22 µΩ·m |
Typical values from the alloy producer. Values for each heat are on the mill certificate.
UNS N06617 Equivalent Grades
Standard | Designation |
|---|---|
UNS | N06617 |
Werkstoff Nr. | 2.4663 |
EN / DIN name | NiCr23Co12Mo |
Trade names | Inconel 617, Alloy 617 |
ASTM pipe / tube | B167 (seamless), B546 (welded) |
Inconel 617 vs 625 vs 800HT
Property | Inconel 617 (N06617) | Inconel 625 (N06625) | Incoloy 800HT (N08811) |
|---|---|---|---|
Nickel | 44.5% min | 58% min | 30 to 35% |
Cobalt | 10 to 15% | 1.0% max | Not specified |
Molybdenum | 8 to 10% | 8 to 10% | Not specified |
Other key additions | Al 0.8 to 1.5% | Nb + Ta 3.15 to 4.15% | Al + Ti 0.85 to 1.20% |
Main strength | Creep and oxidation above 1000°C | Corrosion resistance, strength to about 650°C | Creep strength, lower cost |
For lower cost creep service, see our Incoloy 800, 800H and 800HT pipes and tubes. For aqueous corrosion, see our Inconel 625 pipes and tubes.
Inconel 617 Pipe Schedule and Weight Chart
NPS | OD (mm) | SCH 5S | SCH 10S | SCH 40S | SCH 80S |
|---|---|---|---|---|---|
1/2" | 21.34 | 1.65 mm / 0.85 kg/m | 2.11 mm / 1.07 kg/m | 2.77 mm / 1.35 kg/m | 3.73 mm / 1.73 kg/m |
3/4" | 26.67 | 1.65 mm / 1.08 kg/m | 2.11 mm / 1.36 kg/m | 2.87 mm / 1.79 kg/m | 3.91 mm / 2.34 kg/m |
1" | 33.40 | 1.65 mm / 1.38 kg/m | 2.77 mm / 2.23 kg/m | 3.38 mm / 2.66 kg/m | 4.55 mm / 3.45 kg/m |
1 1/2" | 48.26 | 1.65 mm / 2.02 kg/m | 2.77 mm / 3.31 kg/m | 3.68 mm / 4.31 kg/m | 5.08 mm / 5.76 kg/m |
2" | 60.33 | 1.65 mm / 2.54 kg/m | 2.77 mm / 4.19 kg/m | 3.91 mm / 5.79 kg/m | 5.54 mm / 7.97 kg/m |
3" | 88.90 | 2.11 mm / 4.81 kg/m | 3.05 mm / 6.88 kg/m | 5.49 mm / 12.03 kg/m | 7.62 mm / 16.27 kg/m |
4" | 114.30 | 2.11 mm / 6.22 kg/m | 3.05 mm / 8.91 kg/m | 6.02 mm / 17.12 kg/m | 8.56 mm / 23.77 kg/m |
6" | 168.28 | 2.77 mm / 12.04 kg/m | 3.40 mm / 14.72 kg/m | 7.11 mm / 30.10 kg/m | 10.97 mm / 45.32 kg/m |
Dimensions follow ASME B36.19M. Weights are calculated at 8.36 g/cm³ as (OD minus wall) x wall x π x 8.36 / 1000.
Applications of UNS N06617 Pipes and Tubes
- Gas turbine combustion cans, transition ducts and liners
- Ducting and piping in high temperature petrochemical and process furnaces
- Catalyst grid supports in nitric acid production
- Heat exchangers and steam generators in high temperature gas cooled reactor designs
- Heat treatment and industrial furnace hardware
Testing and Documentation
Every order of UNS N06617 pipe and tube goes through the checks below at our testing facility or approved third party labs.
- Chemical analysis and PMI
- Tension test
- Flattening and flaring tests
- Hydrostatic or non-destructive electric test on each length
- Ultrasonic testing on request
- Visual and dimensional inspection
Mill test certificates are issued to EN 10204 3.1, with 3.2 available on request. You can view our approvals on the certificates page.
Packing and Marking
Each length is marked with the standard, UNS N06617, size, heat number and manufacturer name. Ends are capped and pipes are packed in wooden boxes or bundles, kept apart from carbon steel. Read more about our packing and despatch process.
Request a Quote for UNS N06617 Pipes & Tubes
Send us the OD or NB, wall or schedule, standard (B167 or B546), length and quantity, and our team will reply with price and delivery. Use the enquiry form or reach us through the contact page.
Frequently Asked Questions
What is UNS N06617?
UNS N06617 is Inconel 617 (Alloy 617, W.Nr 2.4663), a nickel-chromium-cobalt-molybdenum alloy with aluminium, used for strength and oxidation resistance above 1000°C.
Which ASTM standard covers Inconel 617 pipe?
ASTM B167 / ASME SB167 covers seamless pipe and tube. ASTM B546 covers electric fusion welded pipe.
What are the mechanical properties of UNS N06617?
In the annealed condition, N06617 has 655 MPa to 760 MPa minimum tensile strength, 240 MPa (35 ksi) minimum yield strength and 35% minimum elongation.
What is the difference between Inconel 617 and 625?
Inconel 617 contains 10% to 15% cobalt and aluminium for creep and oxidation resistance above 1000°C. Inconel 625 contains niobium instead and is chosen mainly for corrosion resistance and strength at lower temperatures.
What is the density of Inconel 617?
The density of Inconel 617 is 8.36 g/cm³.
