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AMS 5772 is a high-strength stainless steel alloy commonly used in aerospace and defence applications. This alloy is known for its excellent mechanical properties and corrosion resistance, making it an ideal choice for demanding environments. If you’re considering using AMS 5772 in your next project, you should know a few key things about its composition, physical and mechanical properties, heat treatment, and uses.
What is AMS 5772?
AMS 5772 (also known as Haynes 188 Alloy) is an aluminium alloy, specifically a heat-treatable wrought alloy. It has a high strength-to-weight ratio and good corrosion resistance, all at an increased temperature. It is most notably used in aerospace components such as wings, fuselages, and landing gear due to its superior properties.
AMS 5772 Composition
AMS 5772 includes high levels of chromium, molybdenum, and nitrogen, giving it excellent corrosion resistance and strength. Additionally, it contains small amounts of other elements, such as nickel, carbon, and sulfur, that contribute to its overall properties.
Element | Content (%) |
---|---|
Cobalt, Co | ≥ 37 |
Nickel, Ni | 22 |
Chromium, Cr | 22 |
Tungsten, W | 14 |
Iron, Fe | ≤ 3 |
Manganese, Mn | ≤ 1.25 |
Silicon, Si | ≤ 0.50 |
Carbon, C | ≤ 0.15 |
Lanthanum, La | 0.040 |
Phosphorous, P | 0.020 |
Sulfur, S | 0.015 |
AMS 5772 Physical Properties
AMS 5772 has a density of 7.8 grams per cubic centimetre and a melting point of around 1,370 degrees Celsius. It has a high tensile strength of up to 210 ksi and a yield strength of up to 190 ksi. Additionally, it has a low coefficient of thermal expansion, which means it can withstand extreme temperature fluctuations without significant dimensional changes.
Properties | Metric | Imperial |
---|---|---|
Density | 8.9 g/cm3 | 0.324 lb/in3 |
Melting point | 1330°C | 2425°F |