“Core materials customized to meet your specifications”


Ultracor manufactures its products at a single location in Stockton, California, United States of America.  The facility has been certified to AS9100C since 2011.  Prior to that time, it operated a quality system based upon Mil-I-45208a.  


Ultracor's staff includes degreed engineers experienced in the design and manufacture of composite honeycomb.  We have the experience to assist customers in designing a unique core for their applications. 


Ultracor possesses tooling to produce hexagonal cell sizes of 1 inch, 5/8 inch, 1/2 inch, 3/8 inch, 1/4 inch, and 3/16 inch; and Ultraflex cell sizes of 1 inch, 3/4 inch, 3/8 inch and 1/4 inch.  Other cell sizes can be produced after an investment in tooling.
Ultracor can be produced from almost any non-metallic web material and in densities ranging from 0.60 lb/ft3 to over 15.0 lb/ft3.


Among our other value-added processes are splicing, heat forming and testing.  Our unique splicing capability employs the neat resin of the specified prepreg to form a splice line that is barely noticeable to the naked eye.  This minimizes added weight and avoids material property mismatches.  
We can heat form sheets of core in our facility to produce radiused parts for our customers.
We possess a United tensile tester to verify product requirements to customer specifications.  We also maintain relationships with outside laboratories to test properties such as dielectric constant, loss tangent, CTE and high temperature properties.


While customer specifications may limit specific changes to materials and processes, the Ultracor team continuously assesses every aspect of the operation in search of areas that can be improved.  We utilize a formal process to identify and act on improvement areas.

Contact Us

Thank you very much for visiting our website. Please visit us often for updated information. If you have specific questions regarding pricing, availability, or other information on other Ultracor products, please call us at 209-983-3744 or send us a message.