Silicon Bronze AMS 4616 (UNS C65620)

Technical Data Sheet

Chemical Composition Limits
Weight % Cu Fe Mn Si Zn P
AMS 4616
90 1.0 -2.0 1.0 2.4-4.0 1.5-4.0 0.10

AMS 4616 solid bar is a special high strength silicon bronze; the additional iron content provides added strength in conjunction with the self lubricity of the silicon for excellent bearing and load properties. Easily machined into ball bearing cage assemblies. Typical uses of AMS 4616 bar is in the Aerospace industry, anti-friciton bearing cages, races and spacers.

Typical Mechanical Properties

Material Condition Tensile Strength Ksi Yield Strength Ksi Elongation 4D % Hardness (surface) HB
AMS 4616 Stress Relieved Bar 56 20 30 90 min

AMS is avaliable in solid bar 5/8" - 4 1/2". For all other stock availability contact Sales.


At Aircraft Materials we specialise in the rapid turn-around of orders, with most stock items ready for shipping out the same day to anywhere in the world. For time-critical orders, such as AOGs use our AOG service desk (, the team are dedicated to processing and dispatching orders on the same day, even for cutting orders on bar and sheet products.

Our expertise in global logistics enables us to source material from anywhere in the world in a matter of days and provide fast shipping solutions to all our customers, whichever country they are in. We use a range of transport partners to ship overnight within the UK and Europe, and offer a full range of logistics solutions from priority express services to more cost-effective economy shipments all around the globe. To find out more about our services click here.

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.