What is AMS4981 Titanium?

AMS4981 is a material specification issued by the Aerospace Material Specifications (AMS). Specifically, AMS4981 pertains to the titanium alloy Ti-6Al-4V (6% aluminum, 4% vanadium) and is focused on its forged bars and forgings. It is typically used for manufacturing aerospace components that require high strength, lightweight properties, and excellent corrosion resistance.

Key Points about AMS4981:

Form: This specification covers a titanium alloy in the form of bars , wire , and forgings up through 4 .000 inches (101 .60 mm ) ,inclusive , in diameter or least distance between parallel sides and forging stock of any size

Material Composition

Heat Treatment Conditions

Bars and forgings 0.50 inch (12.7mm ) and over in nominal diameter or least distance between parallel sides shall be solution heat treated by heating in a suitable atmosphere to 1500 to 1675 °F (816 to 913 °C) , holding at the selected temperature within ±25°F (±1 4°C) for not less than 1 hour , and cooling at a rate equivalent to an air cool or faster, and precipitation heat treated by heating to 11 00°F ± 15°F (593°C ± 8 °C) , holding at hea t for 4 to 8 hours , and cooling in air.

Heat treatment for product under 0 .50 inch (1 2 .7 mm ) norminal diameter or least distance between parallel sides shall be as agreed upon by purchaser and producer. Pyrometry shall be in accordance with AMS2750 .

Mechanical Properties

Primary Applications

· Aerospace Sector: Components like turbine engine parts, structural elements, and fasteners.

· Industrial Uses: High-performance equipment parts and medical devices.