AMS 6491 Steel – Composition, Properties and Uses
Have you ever encountered the term AMS 6491 and wondered what it means? Well, it’s a type of alloy steel widely used in various industrial applications. It boasts unique physical and mechanical properties that suit various uses. In this blog post, we’ll look closely at AMS 6491 and everything you need to know about it.
What is AMS 6491?
AMS 6491 (also known as M50 Tool Steel) is a metal alloy designed to withstand extreme temperatures and pressures. This makes it ideal for aircraft engines, gas turbines, and even rocket engines. What sets AMS 6491 apart from other high-strength steels is its exceptional toughness, which allows it to maintain its strength and durability even in the most demanding environments. So, if you’re looking for a material that can withstand extreme conditions, AMS 6491 is worth considering.
AMS 6491 Composition
AMS 6491 is a low alloy steel containing various elements such as carbon, manganese, chromium, nickel, and molybdenum in varying proportions. The composition of AMS 6491 is carefully controlled to ensure consistent quality and performance.
| C | Cr | Si | Ni | V | W | Mn | Mo | S | P | Co | Cu | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min. | 0.80 | 4.00 | – | – | 0.90 | – | 0.15 | 4.00 | – | – | – | – |
| max. | 0.85 | 4.25 | 0.25 | 0.15 | 1.10 | 0.25 | 0.35 | 4.50 | 0.008 | 0.015 | 0.25 | 0.10 |
AMS 6491 Physical Properties
AMS 6491 has exceptional physical properties such as high tensile strength, toughness, and resistance to wear and corrosion. It is also highly resistant to heat and can withstand high temperatures without losing its structural integrity.
| Property | Type | Value |
| Density | Physical | 7.85 g/cm3 / 0.283 lb /in3 |
| Young’s modulus | Mechanical | 210 GPa |
| Specific heat | Thermal | 460 J/kg-K |
| Coefficient of linear thermal expansion | Thermal | 11.4 10^-6/ºC |
| Thermal conductivity | Thermal | 25.0 W/(m·K) |
| Electric resistivity | Electric | 600 Ω*m*10^-9 |
| Relative magnetic permeability | Magnetic | >500 |
AMS 6491 Mechanical Properties
In addition to its impressive physical properties, AMS 6491 also possesses exceptional mechanical properties. It has a high yield strength, which makes it ideal for use in applications that require high load-bearing capacity. It also exhibits excellent flexibility and can easily form into various shapes and sizes.
| Property | Value (imperial) | Value (metric) |
| Ultimate Tensile Strength | 363-391 [psix10^3] | 2500-2700 MPa |
| Hardness | — | 60-65 HRC |
| Service temperature | 32-797°F | 0-425°C |
AMS 6491 Specifications
- UNS K88165
- UNS T11350
- AMS 6490
- AMS 6491
- ASTM A-600
AMS 6491 Uses
AMS 6491 is used in various industrial applications such as aircraft and automotive engineering, construction, and manufacturing. Its exceptional strength, toughness, and resistance to wear and corrosion make it ideal for use in high-stress applications such as gears, shafts, and other critical components.
AMS 6491 Hardness
The hardness of AMS 6491 can be increased through heat treatment, which involves heating the material to a specific temperature and quenching it in water or oil. This treatment process results in increased hardness and improved resistance to wear and corrosion, making it even more suitable for use in high-stress applications.
AMS 6491 Heat Treatment
AMS 6491 can be heat-treated to achieve mechanical properties such as increased hardness, better wear resistance, and improved toughness. Heat treatment involves heating the material to a specific temperature and holding it there for a specified time before quenching it in water or oil. The resulting material is stronger, more durable, and better able to withstand high-stress applications.
Conclusion:
AMS 6491 material is a low alloy steel renowned for its exceptional physical and mechanical properties. Its high tensile strength, toughness, and resistance to wear and corrosion make it ideal for use in various industrial applications. With heat treatment, its hardness can be increased further, improving its properties and suitability for use in high-stress applications. Whether you’re in construction, automotive engineering, or any other industry that requires high-stress applications, AMS 6491 is a reliable choice to get the job done.
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