Johnson Brass & Machine Foundry (JBM) combines aluminum centrifugal castings technology with forging alloy design to produce high quality wrought equivalents that match the chemistry and mechanical properties of AL 6061 T-6, 7075, 5252 and many others.

Common applications for aluminum centrifugal castings include:

• Support Rings – Detector and source support gantry rings for the medical imaging industry. Centrifugals are meeting the demand for cost-effective, residual stress-free components in 6061-T6 condition.
• Chambers – Vacuum-tight chamber, shields and transition components for etching and metallization applications. The tight grain structure and soundness of centrifugals enables their substitution for many forged aluminum alloys. This same chemical homogeneity and grain structure ensures consistent and uniform anodizing response.
• Instrument housings for underwater and space applications. The structural integrity of centrifugal castings ensures a leak-proof structure. 6061 AL can be selected for its weldability for further fabrication and anodizing response, as can 7075 and A771 for their high strengths.
• Seals for power generation. The uniformity of grain structure ensures a stress free component suitable for tight tolerance seal ring components. Most often produced in A356, A815 or A771 and other aluminums.
• Coolers for plastic extrusion equipment. Centrifugals produced in the 6061 family with integral cooling tubes have reduced machining time and ensure a leak-proof cooling system.
• Microwave and radio astronomy collectors and support components. Produced cost effectively in high strength wrought equivalents.
• Forming and conveyor components for the paper and flexible packaging industry. Rely on the defect-free structure of centrifugals. Alloys from A356 to 6061 and 7075 are the choice for these demanding applications.

JBM formings and castings are chosen for use in many demanding applications. They can be an ideal cost reducing replacement for forgings or fabrications. Our aluminum castings offer great mechanical properties and provide the high quality dense material expected from metal solidified under a force 60-times normal gravity.

Our ability to produce near net shaped components reduces your machining and fabrication costs. Tooling costs are low, and in many cases, unnecessary, as thousands of sizes are available from our existing molds.

We work with your designers and engineers to help design cost effective components. Three-dimensional solid model designing in-house allows us to communicate complicated design features quickly and clearly.

JBM produces proprietary materials that are carefully designed to meet or exceed wrought product specifications. Some of our proprietary alloys are chemical twins of common wrought materials. These twins provide product properties and performance and are ideal for use when mated through welding or assembly with wrought products. Virtual identical chemistry to wrought products assures compatibility within your design.

Alloys JBM commonly pours are: the entire 6061 family (including T5, T6 and custom tempers), 7075, 5252, 3003, 711, 713, 771, 356 primary and secondary, 356 T-6, 319, 535, 850.1, 852, B443, C355, 242, A707, 2024, 7075 T-6, 7075 T-7 and 8011.

Other grades can be produced at JBM. Please contact us for help in producing your exact chemistry requirements.

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