About AMS 5869 Inconel 625 Plate
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 625 UNS N06625 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, AMS 5869 Inconel 625 Strip is also known for its excellent resistance to oxidation, which helps to ensure its longevity and effectiveness.
What is AMS 5869?
SAE/AMS 5869: Nickel Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate 62Ni - 21.5Cr - 9.0Mo - 3.7Cb Solution Heat Treated.
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.
AMS 5869 Heat Treatment
1. Solution Annealing:
Solution annealing is the primary heat treatment process specified in AMS 5869 for Inconel 625 sheet. This process involves heating the material to a temperature typically in the range of 1900°F to 2100°F (1038°C to 1149°C) and holding it at this temperature for a specified period, followed by rapid quenching in water or another suitable medium. Solution annealing is performed to dissolve any precipitates or secondary phases present in the material, resulting in a homogeneous microstructure with improved ductility and corrosion resistance.
2. Aging:
After solution annealing, AMS 5869 may specify an aging treatment to further enhance the mechanical properties of alloy 625 sheet. Aging involves heating the material to a lower temperature, typically around 1200°F to 1400°F (649°C to 760°C), and holding it at this temperature for a specified duration. Aging allows for the precipitation of secondary phases, such as gamma prime (γ') and gamma double prime (γ''), which contribute to the strengthening of the alloy through dispersion strengthening mechanisms.
3. Stress Relieving:
AMS 5869 may also specify stress relieving as a post-weld heat treatment for 2.4856 Inconel 625 plate and sheet materials. Stress relieving involves heating the material to a temperature typically in the range of 1200°F to 1400°F (649°C to 760°C) and holding it at this temperature for a sufficient time to relieve residual stresses generated during fabrication processes such as welding or cold forming. Stress relieving helps to minimize the risk of stress corrosion cracking and improve the dimensional stability of the material.
Alloy 625 Plate AMS 5869 Mechanical Properties
| 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 | – |
Price of Inconel 625 Plate & Sheet Per kg
| UNS N06625, HR, CR, 0.200 X 80 MM | US $24.75/ Kg |
| DIM : 0.360 X 205MM COLD ROLLED, ANNEALED Alloy 625 | US $28.17/ Kg |
