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INCONEL® ALLOY 718


INCONEL® ALLOY 718

UNS N07718

W.Nr.2.4668

Diameter 2 - 75 mm

Технология плавки:IF/EAF/LF/AOD/VOD/VIM/ESR/VAR

Контроль качества: Тестирование компонентов, испытание механических свойств,Ультразвуковой контроль внутренней стороны,Вихретоковое тестирование поверхности...

INCONEL® alloy 718 (UNS N07718/W.Nr. 2.4668) is a high-strength, corrosion-resistant nickel chromium material used at -423° to 1300°F. The age-hardenable alloy can be readily fabricated. even into complex parts. Its welding characteristics. especially its resistance to post weld cracking, are outstanding. The ease and economy with which INCONEL alloy 718 can be fabricated, combined with good tensile, fatigue creep, and rupture strength, have resulted in its use in a wide range of applications. Examples of these are components for liquid fueled rockets, rings, casings and various formed sheet metal parts for aircraft and land-based gas turbine engines, and cryogenic tankage. It is also used for fasteners and instrumentation parts.

● Good mechanical properties – tensile, fatigue and creep-rupture

● Yield tensile strength, creep, and rupture strength properties are exceedingly high
● Highly resistant to chloride and sulfide stress corrosion cracking
● Resistant to aqueous corrosion and chloride ion stress corrosion cracking
● High temperature resistant
● Age-hardenable with a unique property of slow aging response that permits heating and cooling during annealing without the danger of cracking.
● Excellent welding characteristics, resistant to postweld age cracking

Chemical Composition:

Grade C Si Mn S P Cr Ni Mo Cu Co Ti Al Fe Others
718 ≤0.08 ≤0.35 ≤0.35 ≤0.015 ≤0.015 17-21 50-55  2.80–3.30 ≤0.3 ≤1.0 0.65–1.15  0.20–0.80 balance Nb+Ta:4.75–5.50;  B≤0.006

Mechanical Properties

Aolly Status

Tensile strength

Rm Mpa

Min

Yield strength

R P 0. 2 Mpa

Min

Elongation

A 5

Min %

Reduction

of Area,

Min, %

Brinell hardness

HB

Min

Solution

965

550

30

 

 

solution precipitation harden

1275

1034

12

15

331

Physical Properties

Density g/cm3

Melting Point 

8.20

1260~1336