Inconel 718

• 

• Material:	Inconel 718
  Other Brands:	GH4169, GH169, UNS NO7718, Inconel 718, 2.4668
  Source Stock:	Customized
  Supplier:	Shanghai Hite Special Alloy Co., Ltd.
  Contacts:	Mr.KayDuan
  Email:	sales02@hitealloy.com

• Inconel 718 Details

  
  
  

  Inconel 718 alloy is a precipitation hardened nickel chromium iron alloy containing niobium and molybdenum, which has high strength, good toughness at 700 ℃, and corrosion resistance in high and low temperature environments. The supply status can be solid solution treated or precipitation hardened.
  

  Chemical composition

  Alloy	%	Ni	Cr	Fe	Mu	Nb	C	M	Si	S	Cu	Al	Ti	B
  Inconel 718	Min	50	17	Remainder	2.8	4.75						0.2	0.65
  	Max	55	21		3.3	5.5	0.08	0.35	0.35	0.015	0.3	0.8	1.15	0.006

  
  

  Physical and mechanical

  Physical properties of Inconel718 alloy:

  Density	8.24 g/cm3
  Melting point	1260-1320 ℃

  
  

  The minimum mechanical properties of Inconel718 alloy at room temperature:

  Alloy	tensile strength Rm N/mm²	Clothing strength Rp0.2 N/mm²	Elongation rate A5 %	Brinell hardness HB
  Solution treatment	965	550	30	≥363

  
  

  Characteristic

  1. Processability.

  2. Has high tensile strength, fatigue strength, creep resistance, and fracture strength at 700 ℃.

  3. Has high antioxidant properties at 1000 ℃.

  4. Stable chemical properties at low temperatures.

  5. Good welding performance.

  
  

  Metallographic structure

  GH4169 alloy has an austenitic structure and is formed after precipitation hardening γ” It has excellent mechanical properties. Generated at grain boundaries during heat treatment δ This gives it the best plasticity.

  
  

  Corrosion resistance

  Whether in high or low temperature environments, Inconel718 alloy has excellent resistance to stress corrosion cracking and pitting corrosion. Inconel718 alloy exhibits particularly excellent oxidation resistance at high temperatures.

  
  

  Scope of application

  Due to its high temperature strength, excellent corrosion resistance, and ease of processing at 700 ℃, Inconel 718 alloy can be widely used in various high demand situations. 

  1. Steam turbine.

  2. Liquid fuel rocket.

  3. Low temperature engineering.

  4. Acid environment.

  5. Nuclear engineering.