Super Alloy Inconel 601™ (UNS N06601)

Super alloys or high performance alloys are strengthened by performing solid-solution hardening, work hardening, and precipitation hardening. They have good creep and oxidation resistance, and consist of elements in a variety of combinations to achieve the desired result. They can be used at very high temperatures and mechanical stress, and also where high surface stability is required.

Inconel 601™ is a nickel-chromium-iron alloy having high temperature oxidation resistance. The following datasheet provides more details about Inconel 601™.

Chemical Composition

The following table outlines the chemical composition of Inconel 601™.

Element Content (%)
Nickel, Ni 58-63
Chromium, Cr 21-25
Iron, Fe 13
Aluminum, Al 1-1.70
Copper, Cu ≤ 1
Manganese, Mn ≤ 1
Silicon, Si ≤ 0.50
Carbon, C ≤ 0.10
Sulfur, S ≤ 0.015

Physical Properties

The physical properties of Inconel 601™ are given in the following table.

Properties Metric Imperial
Density 8.11 g/cm3 0.293 lb/in3
Melting point 1349°C 2460°F

Mechanical Properties

The mechanical properties of Inconel 601™ are displayed in the following table.

Properties Metric Imperial
Tensile strength (solution annealed/value at room temperature) 760 MPa 110000 psi
Yield strength (@ strain 0.200%, solution annealed/value at room temperature) 450 MPa 65300 psi
Elongation at break 42% 42 %

Thermal Properties

The thermal properties of Inconel 601™ are highlighted in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 13.75 µm/m°C 7.639 µin/in°F
Thermal conductivity 11.2 W/mK 77.7 BTU in/hr.ft².°F

Other Designations

Other designations that are equivalent to Inconel 601™ include:

  • AMS 5715
  • AMS 5870
  • ASTM B166
  • ASTM B167
  • ASTM B168
  • DIN 2.4851

Fabrication and Heat Treatment

Machinability

Inconel 601™ can be machined using conventional machining methods which are used for iron-based alloys. Machining operations are performed using commercial coolants. High-speed operations such as grinding, milling or turning, are performed using water-based coolants. Heavy lubricants are used for tapping, drilling, boring, or broaching.

Forming

Inconel 601™ is formed using all conventional techniques.

Welding

Inconel 601™ is welded using gas-tungsten arc welding, gas metal-arc welding, shielded metal-arc welding, and submerged-arc welding methods.

Heat Treatment

Inconel 601™ does not respond to heat treatment.

Forging

Inconel 601™ is forged at 1038 to 1233°C (1900 to 2250°F)

Hot Working

Inconel 601™ is hot worked at 872 to 1233°C (1600 to 2250°F)

Cold Working

Inconel 601™ can be cold formed using standard tooling.

Annealing

Inconel 601™ is annealed at 1149°C (2100°F). It is then cooled at temperatures ranging from 538 to 760°C (1000 to 1400°F) in order to prevent thermal cracking.

Hardening

Inconel 601™ can be hardened only by cold working.

Applications

Inconel 601™ is used in heat treat furnace fixtures and components such as muffles, annealing tubes, and flame shields. It can also be used in chemical process equipments which include process heaters, combustor components, and condenser tubes.

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