Case Study Investment Casting Enables Repeatable Production for Missile System Components

Overview

A manufacturer of tactical ballistic missiles for defense applications faced persistent challenges in producing a critical missile fin assembly. Missile platforms rely on lightweight, dimensionally accurate, and durable components to ensure stable flight in demanding operating conditions.

Challenge

The customer needed repeatable, production-ready performance for a lightweight fin with thin walls and a hollow interior while maintaining tight dimensional tolerances. This combination of lightweight construction and internal complexity made manufacturing especially challenging. Traditional hog-out machining methods were not viable due to the fins’ hollow structure, and casting suppliers struggled to consistently meet quality and tolerance requirements.

Solution

MetalTek’s Wisconsin Investcast Division developed a specialized investment casting approach capable of producing the required hollow geometry with thin-wall precision. The process enables the creation of complex internal features while maintaining strict dimensional control. MetalTek worked with the customer to refine the component for manufacturability, ensuring consistent and repeatable results while preserving critical design requirements.

To ensure durability and performance in demanding environments, Wisconsin Investcast produces the missile fins using high-performance materials, including precipitation-hardening and nickel-based alloys. These materials provide the strength, corrosion resistance, and temperature stability required to support the reliable performance of the fin assembly.

Result

Wisconsin Investcast provides a lightweight missile fin that meets stringent dimensional and performance specifications while requiring minimal secondary machining or finishing. The investment casting process enables consistent, repeatable production with tight process control. The result is a reliable, cost-effective manufacturing solution capable of supporting ongoing production for a demanding defense application.

Contact MetalTek to discuss how our investment casting capabilities can support complex geometries for demanding applications.