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  • UNS S66286, A-286 Alloy Heat Resistant Alloys
  • UNS S66286, A-286 Alloy Heat Resistant Alloys for sale
  • UNS S66286, A-286 Alloy Heat Resistant Alloys for sale
  • UNS S66286, A-286 Alloy Heat Resistant Alloys for sale
  • UNS S66286, A-286 Alloy Heat Resistant Alloys
  • UNS S66286, A-286 Alloy Heat Resistant Alloys
  • UNS S66286, A-286 Alloy Heat Resistant Alloys
  • UNS S66286, A-286 Alloy Heat Resistant Alloys

UNS S66286, A-286 Alloy Heat Resistant Alloys

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Specification, Chemical & Mechanical Performance

Heat Resistant Alloys

UNS S66286 A-286 Alloy

A precipitation hardening stainless steel, UNS S66286 maintains superior strength at high temperatures up to 700℃, surpassing austenitic stainless steels. With a higher nickel content than Type 304, S66286 also includes such elements as titanium and aluminum for hardening. Age hardening is used to precipitate γ' phase [Ni3 (Al, Ti)] making this an extraordinarily strong metal at high temperatures. 

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Weldability

Spot, TIG, MIG and shield metal arc welding can be used on thin S66286 sheets under similar conditions to austenitic stainless steels.

Heat Treatment

S66286 is a precipitation hardening alloy. Its strength is increased through aging after solution heat treatment. Two stages of heat treatment are generally carried out, as follows:

  • Solution heat treatment: 980℃; oil or water cooling
  • Age hardening: 720℃ × 16hr; air cooling

After solution heat treatment, either oil or water cooling is required, though air cooling is better for thinner metal. Note that it is important to use a suitable temperature and holding time for aging to obtain the target strength.

Machinability

Compared to standard austenitic stainless steels, S66286 has somewhat superior machining properties. Although a high-speed steel tool can be used, we recommend the use of a sintered carbide tool, and suggest combining a slower feed rate with a greater cutting depth.

Applications

S66286 is an excellent choice when high-temperature strength is required such as jet engines, gas turbines and turbo charger components.

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