AMS 5869

AMS 5869 Inconel Alloy – Composition, Properties and Uses

ByAbhishek Modak

AMS 5869 is a popular stainless steel alloy widely used in the aerospace and military industries. It is known for its exceptional strength, corrosion, and high-temperature resistance. However, only a few people know the specific properties that make AMS5869 such a valuable material. This blog post will discuss the composition, physical properties, mechanical properties, uses, hardness, and heat treatment of AMS 5869.

What is AMS 5869?

AMS 5869 (also known as Inconel 625 Alloy) is a type of stainless steel alloy used in various industries, including aerospace, chemical processing, and power generation. This alloy is designed to withstand high temperatures and corrosive environments, making it an ideal choice for demanding applications. In addition to its exceptional strength and durability, AMS5869 is also known for its excellent resistance to oxidation, which helps to ensure its longevity and effectiveness. Whether building a jet engine, designing a chemical processing plant, or simply looking for a high-quality material that can withstand challenging toughest conditions, AMS5869 is a reliable and proven choice.

What Form Is AMS 5869 Available at Piping Mart?

  • Nut
  • Bar
  • Bolt
  • Pipe
  • Screw
  • Tubing
  • Valves
  • Washers
  • Flanges
  • Fasteners
  • Electrodes
  • Stud Bolts
  • Sheet Plates
  • Pipe Fittings
  • Forged Fitting

 AMS 5869 Composition

AMS 5869 is a nickel-based alloy that contains roughly 20% chromium, 15% iron, 10% cobalt, 5% molybdenum, and trace amounts of carbon and other elements. These unique bingredientselements give AMS 5869 excellent corrosion resistance, making it suitable for use in harsh environments where other materials deteriorate quickly.

ELEMENT INCONEL 625
NI 58.0 min
AL 0.40 max
FE 5.0 max
MN 0.50 max
C 0.10 max
SI 0.50 max
S 0.015 max
P 0.015 max
CR 20.0 – 23.0
NB + TA 3.15 – 4.15
CO (IF DETERMINED) 1.0 max
MO 8.0 – 10.0
TI 0.40 max

 AMS 5869 Physical Properties

AMS 5869 has a density of 8.0 g/cm³ and a melting point of around 1300°C. It also has good thermal conductivity and can withstand temperatures as high as 1000°C. Additionally, AMS 5869 contains a small amount of titanium, which enhances its flexibility and toughness.

DENSITY 8.44 g/cm 3 / 0.305 lb/in 3
MELTING POINT 1290 -1350 (°C) / 2350 – 2460 (°F)
SPECIFIC HEAT @ 70°F 0.098 Btu/lb/°F
PERMEABILITY AT 200 OERSTED (15.9 KA) 1.0006
CURIE TEMPERATURE -190 (°C) / < -320 (°F)
YOUNG’S MODULUS (N/MM2) 205 x 10
ANNEALED 871 (°C) / 1600 (°F)
QUENCH Rapid Air

 AMS 5869 Mechanical Properties

AMS 5869 has exceptional strength, with a tensile strength of up to 1800 MPa and a yield strength of up to 1200 MPa. It also has good fatigue resistance and excellent creep resistance at high temperatures. Furthermore, AMS 5869 has a low coefficient of thermal expansion, making it suitable for use in applications where dimensional stability is critical.

PROPERTY 21°C 204 °C 316 °C 427 °C 538 °C 649 °C 760 °C 871 °C
Ultimate Tensile Strength /Mpa 992.9 923.9 910.1 910.1 896.3 820.5 537.8 275.8
0.2% Yield Strength /MPa 579.2 455.1 434.4 420.6 420.6 413.7 406.8 268.9
Elongation % 44 45 42.5 45 48 34 59 117
Coefficient of Thermal Expansion µm/m⁰C – 13.1 13.3 13.7 14 14.8 15.3 15.8
Thermal Conductivity /kcal/(hr.m.°C) 8.5 10.7 12.2 13.5 15 16.4 17.9 19.6
Modulus of Elasticity/ MPa 2.07 1.93 1.93 1.86 1.79 1.65 1.59 –

AMS 5869 Equivalent

STANDARD WERKSTOFF NR. (WNR) UNS JIS GOST BS AFNOR EN
5869 2.4856 N06625 NCF 625 ХН75МБТЮ NA 21 NC22DNB4MNiCr22Mo9Nb NiCr23Fe

 AMS 5869 Uses

Thanks to its excellent properties, AMS 5869 is used in various applications, including aircraft engines, gas turbines, rocket engines, nuclear reactors, and chemical processing equipment. It is also used in components that require high strength, durability, and resistance to corrosion, such as springs, fasteners, bolts, and shafts.

 AMS 5869 Hardness

AMS 5869 has a high hardness level of 38 HRC, making it exceptionally strong and resistant to wear and tear. This hardness level is achieved through various heat treatment processes, which we will discuss in the next section.

 AMS 5869 Heat Treatment

AMS 5869 can undergo several heat treatment processes to improve its properties. These processes include solution annealing, quenching, tempering, and stress relieving. Solution annealing involves heating the material to a specific temperature and cooling it rapidly to enhance its flexibility and toughness. Quconsists consist in cooling the material rapidly after heating it to a temperature that promotes hardening. Tempering involves heating the material to a specific temperature and cooling it slowly to reduce its hardness and increase its toughness. Stress relieving is a process that involves heating a materiparticularspecific temperature and then cooling it slowly to reduce the buildup of internal stresses.

Conclusion

AMS 5869 is a special stainless steel alloy with unique properties ideal for extreme environmenexcellenteptional resistance to corrosion, high temperature, and wear, making it a perfect choice for various applications. Furthermore, its high strength, low coefficient of thermal expansion, and excellent creep resistance make it an essential material in the aerospace, military, and chemical processing industries. If you are in the market for a material that offers exceptional properties, then AMS 5869 is worth considering.

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