AMS 4928-Titanium Alloy, Bars, Forgings, and Stock (Ti-6Al-4V, used for fasteners)

Titanium Alloy, Bars, Wire, Forgings, and Stock for Forgings, 6Al-4V (Ti-6Al-4V), Annealed

AMS 4928 covers Ti-6Al-4V, the most commonly used alpha-beta titanium alloy, in the form of bars, wire, forgings, and forging stock. This specification is intended for aerospace and high-performance structural applications where a high strength-to-weight ratio, fatigue resistance, and corrosion resistance are critical.

Key Features

Chemical Composition

Conforms to the chemical range of Grade 5 titanium.

Mechanical Properties (Annealed Condition)

Mechanical properties may vary slightly by size and form (e.g., bar vs. forging).

Common Sizes and Tolerances

Bars and wire: Available in a wide range of diameters (e.g., 6 mm to 200 mm+)

Forgings: Custom shapes and near-net forms

Tolerances per AMS 2241 or per order agreement

Straightness, roundness, and grain structure are tightly controlled

Physical and Thermal Properties

Applications

AMS 4928 material is used in:

Aerospace structures and components (e.g., fasteners, airframe parts)

Jet engine parts

Marine hardware

Medical instruments (non-implant)

High-performance automotive parts

Oil & gas: downhole tools, valves, stress-resistant elements

Delivery and Quality

Supplied in annealed condition unless otherwise specified

Can be ordered to additional requirements (e.g., ultrasonic testing, grain flow control)

Certified with:

Mill Test Reports

Mechanical and chemical property verification

Ultrasonic / NDT reports (if specified)

Related Standards

AMS 4911        Ti-6Al-4V Plate and Sheet

AMS 4935        Ti-6Al-4V Bar, Higher Strength

ASTM B348     Titanium bars and billets

ASTM F136      Ti-6Al-4V ELI for surgical implants

AMS 4965        Ti-6Al-4V, bar and billet for forging