AMS 5837

AMS 5837 Inconel Alloy – Composition, Properties and Uses

ByAbhishek Modak

AMS 5837 is a high-performance nickel alloy with excellent corrosion resistance, high strength, and good weldability. It is widely used in various industries, from aerospace to marine engineering, for critical applications that require superior performance in challenging environments. However, to fully utilize its unique properties, you must understand its composition, physical and mechanical properties, and specific heat treatment processes. This article aims to provide a comprehensive overview of AMS5837, focusing on its properties, uses, and applications.

What is AMS 5837?

AMS 5837 (also known as Inconel 625 Alloy) refers to a specific type of stainless steel that is highly corrosion-resistant. This material is often used in applications that require a combination of strength and durability, such as in the aerospace or automotive industries. One of the defining characteristics of AMS 5837 is its ability to withstand extreme temperatures without losing its structural integrity. This makes it ideal for use in challenging environments where other materials might fail. Overall, AMS5837 is an important material that has helped to enable a wide range of innovative technologies and applications.

What Form Is AMS 5837 Available at Piping Mart?

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

AMS 5837 Composition

AMS 5837 is a nickel-chromium-tungsten-molybdenum alloy that contains small amounts of iron, silicon, and carbon. The alloy’s composition can vary slightly depending on the specific application, but generally, it has about 52% nickel, 19% chromium, 10% tungsten, 5% molybdenum, 1.2 % silicon, respectively and 0.10% carbon. This combination of elements gives AMS 5837 unique properties, including excellent corrosion resistance, high strength and toughness, and good heat resistance.

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 5837 Physical Properties

The physical properties of AMS 5837 are impressive, with high melting and boiling points, density, and thermal conductivity. The alloy has a melting point of around 1370°C, a boiling point of about 3410°C, and a density of 9.05 g/cm³. Its thermal conductivity is approximately 12 W/m*K, which means that it is an excellent conductor of heat, making it ideal for high-temperature applications.

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)
YOUNGYOUNG’SLUS (N/MM2) 205 x 10
ANNEALED 871 (°C) / 1600 (°F)
QUENCH Rapid Air

AMS 5837 Mechanical Properties

AMS 5837 is known for its exceptional mechanical properties, offering high tensile and yield strength, toughness, and flexibility. Its tensile strength can reach up to 2070 MPa, and its yield strength is around 1900 MPa. Additionally, AMS 5837 has good fatigue and creep resistance, making it ideal for critical applications requiring sustained performance under demanding conditions.

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 5837 Equivalent

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

AMS 5837 Uses

AMS 5837 is a versatile alloy that finds applications in various industries, such as aerospace, marine engineering, chemical processing, and energy production. Its corrosion resistance, high strength, and toughness make it an ideal material for manufacturing parts for gas turbines, hot exhaust systems, and high-stress structural components for aircraft. It is also used in chemical processing plants and oil and gas production, where it needs to withstand high temperatures and corrosive environments.

AMS 5837 Hardness

AMS 5837 has a high hardness level, making it ideal for impact and wear resistance applications. The hardness of AMS 5837 is about 200 HB, which means that it is a challenging and durable material that can withstand high-stress applications without compromising its structural integrity.

AMS 5837 Heat treatment

Heat treatment is an essential process in the manufacturing of AMS 5837 parts. The alloy can be hardened by quenching and tempering, which involves heating the material to a high temperature and then rapidly cooling it by quenching it in water or oil. This process improves strength and toughness, making it ideal for high-stress applications with high temperatures and corrosion resistance.

Conclusion

AMS 5837 is a high-performance nickel alloy widely used in critical applications that demand superior performance in harsh environments. Its composition, physical and mechanical properties, and specific heat treatment processes make it a versatile and reliable material for manufacturing parts for aerospace, marine engineering, chemical processing, and energy production. Understanding these properties is essential tomaximizingg the potential benefits of AMS 5837 and using it effectively in various applications.

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