APPLICATION OF ALLOYS IN AEROSPACE INDUSTRY

The demanding requirements of aerospace applications constitute the driving force in development of nickel and special alloys. Stability at high temperatures, slow crack propagation, high creep strength, toughness and resistance to high-temperature oxidation, good fatigue behaviour are critical properties and features for aviation.

Where there is no margin for error and common stainless steels may not provide adequate performance – nickel-based and special alloys are used.

Typical alloys for aerospace engineering applications:

Fuselage, wing and tail (fasteners):

  • Alloy 718 (W.N.: 2.4668; GOST: ХН45МВТЮБР-ВД; UNS: N07718);
  • Alloy A-286 (W.N.: 1.4980; UNS: S66286).

Interior cabin (fasteners):

  • Alloy X-750 (W.N.: 2.4669; UNS: N07750);
  • Alloy 400 (W.N.: 2.4360; GOST: НМЖМц 28-2,5-1,5; UNS: N04400);
  • Alloy 600 (W.N.: 2.4816; GOST: ХН70Ю; UNS: N06600);
  • Alloy A-286 (W.N.: 1.4980; UNS: S66286).

Engine components (bearings, gears, blades, vanes, discs, fasteners, rings):

  • Alloy X-750 (W.N.: 2.4669; UNS: N07750);
  • Alloy 600 (W.N.: 2.4816; GOST: ХН70Ю; UNS: N06600);
  • Alloy 625 (W.N.: 2.4856; GOST: ХН75МБТЮ; UNS: N06625);
  • Alloy 617 (W.N.: 2.4663; GOST: ХН45Ю; UNS: N06617);
  • Alloy C-263 (W.N.: 2.4650; GOST: ХН50МВКТЮР; UNS: N07263);
  • AISI 430/410 (W.N.: 1.4016; GOST: 12X17; UNS: S43000);
  • Alloy 75 (W.N.: 2.4951; GOST: ХН78Т; UNS: N06075);
  • Alloy 80A (W.N.: 2.4952; GOST: ХН77ТЮР; UNS: N07080);
  • Alloy A-286 (W.N.: 1.4980; UNS: S66286).

Stationary gas turbine(combustors, ring blanks, seals, blades, vanes):

  • Alloy 617 (W.N.: 2.4663; GOST: ХН45Ю; UNS: N06617);
  • Alloy 75 (W.N.: 2.4951; GOST: ХН78Т; UNS: N06075);
  • Alloy 80A (W.N.: 2.4952; GOST: ХН77ТЮР; UNS: N07080).
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Material selection for some critical applications in aerospace industry is dictated by the operating temperatures, physical and mechanical property requirements including high proof strength, tensile ductility, low creep extension, fracture toughness, etc. and requires some special knowledge in the relevant area.

Please contact our technical engineer for any help you may need in your specific application field.

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