nickel-chromium-iron Alloys

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 Nickel-Chromium-Iron Alloys

Composition

44.2-72+% Nickel, 14-31% Chromium, 3-20% Iron. Common fourth addition is Molybdenum, followed by balances of Cobalt, Niobium, Titanium, Aluminium, Carbon, Manganese and SIlicon.

Common Shapes

Nickel-Chromium-Iron Alloys are commonly available in

  • Sheets and Plates

  • Welded & Seamless Tubes and Pipes 

  • Structural profiles

  • Wire

  • Rods

  • Bars

  • Fittings

(Not all alloys or tempers available in all shapes)

Characteristics

  • Stable, thick Cr₂O₃ film layer, strengthened when heated, giving excellent corrosion resistance.

  • Reliable strength over wide temperature range

  • Excellent creep resistance at high temperatures

Uses

  • Gas turbine blades

  • Jet engine components

  • Turbo charger rotors

  • Pressure vessels, especially 718 in cryogenic use.

  • Heat exchangers

  • Exhaust systems

Weldability

Nickel-Chromium-Iron Alloys are not easily welded, with the exception of Alloys 625 and 718, which are weldable via MTAW welding.

Machinability

Nickel-Chromium-Iron Alloys are not readily machined, due to their rapid work hardening.

Commonly Used Alloys

600 | 601 | 617 | 625 | 690 | 718 | 725 | 738

X-750

Common Trade Names

Inconel®, Chronin®, Altemp®, Haynes®, Nicrofer®

Integ Metals // Materials // Nickel // Nickel-Chromium-Iron Alloys
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