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 all stock items can be shipped out within 24 hours, usually within the same day. Even cutting orders for bar or sheet can be processed and dispatched the same day, and for time-critical situations such as AOGs, we have a dedicated AOG service desk ready to help (

Thanks to our global logistics network we can source from anywhere in the world in just a few days. We use a range of transport partners to enable us to ship overnight within the U.K. and Europe and provide fast shipping solutions to the rest of the world. If your requirement is urgent we can offer a priority shipping service, but also if time is not so critical we can offer more cost-effective options to ensure you get the best value for money. 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.

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