Aluminum Casting
Aluminum Investment
Castings
Aluminum is a lightweight, corrosion resistant alloy commonly used for investment cast components. At Milwaukee Precision Casting, Inc., we pour aluminum A356 for project critical parts such as pump impellers & housings, covers, plates, high velocity blowers, and more.
Our precision investment casting process starts with a precise wax pattern, which we use to create a durable ceramic mold. Once the mold is ready, we pour molten aluminum alloy into it, crafting castings with exceptional precision and detail. We take pride in delivering A356 aluminum investment castings with an impressive ±0.005 inch/inch linear tolerance—an essential quality that sets us apart as a top-tier investment casting manufacturer.
Casting Heat Treatments
Aluminum Alloy Investment Casting Heat Treatments
Depending on your needs relative to strength and ductility, we have the capabilities of providing heat treatment for Aluminum Castings:
- T2 (anneal)
- T4 (solution treat & naturally age)
- T5 (high-temperature forming & artificial age)
- T6 (solution treat & artificially age)
- T61* (solution treat, quench, and age)
*T61 heat treatment is for maximum strength of up to 40K PSI tensile for aluminum alloy castings.
Cast Parts
Precision Aluminum Investment Cast Parts
For decades, Milwaukee Precision Casting, Inc. has been producing aluminum investment castings for critical industries, such as pump & valve, oil & gas, petrochemical, medical, firearms, and more.
Aluminum is a commonly cast alloy for essential components as a lightweight alternative to stainless steel. We currently pour aluminum alloy A356, which is an alloy made of aluminum, silicon, magnesium, iron, copper, manganese, and zinc.
We also offer secondary services for our investment castings, such as machining , heat treating, plating, and non-destructive testing.
Contact us for a quote today!
Aluminum Casting Alloys
A356 Aluminum
Alloy Casting
A356 is a cast aluminum alloy with impressive corrosion resistance, strength, and ductility, comparable to stainless steel, except aluminum is much lighter in weight. This makes A356 ideal for aluminum investment casting parts.
Aluminum is weldable, heat treatable, and highly corrosion resistant.
Benefits
What are the benefits of
Aluminum Investment Casting?
Aluminum investment castings are lightweight compared to other alloy types, which makes it ideal for weight sensitive applications such as automotive. They also have excellent stability under different environments, including high temperatures and atmospheric changes that require parts tolerant to high stress. Additional benefits of Aluminum Investment Alloy casting include:
- Corrosion Resistance: Protective oxide layer naturally forms making aluminum cast parts suitable for any outdoor or marine applications
- Design Flexibility: Helps with complex geometries and intricate features
- Smooth Surface Finish: Reduces additonal machining or finishing services
Markets We Serve
Trusted by
Demanding Industries
Commercial Firearms & Military
Milwaukee Precision Casting, Inc. specializes in components for the firearm and gun industries through the investment casting process, producing military components, commonly for AR-15, M16, M240, and M249.
Power Transmission
Milwaukee Precision Casting, Inc. (MPC) is proud to serve the industry in many areas, producing power transmission component castings that pass stringent requirements for high-voltage substation power switching and storage equipment.
Medical
Investment castings used in medical-related applications require the highest degree of quality, cleanliness and surface finish.
Auto After Market
Milwaukee Precision Casting, Inc. has extensive exposure in the automotive aftermarket, the secondary market of the automotive industry. We specialize in the manufacturing of vehicle parts, tools, and accessories for light and heavy vehicles.
Food & Dairy
Milwaukee Precision Casting, Inc. plays a major role in the production of stainless steel investment castings used in the food & dairy industry.
Construction
Milwaukee Precision Casting, Inc. (MPC) produces construction component castings for tools and equipment used in the construction industry.
Meat Processing
Milwaukee Precision Casting, Inc. produces a wide array of standard and customized investment casting products for meat processing equipment, including meat grinder parts and special attachments for machinery.
Machine Tool
Milwaukee Precision Casting, Inc. produces quality investment castings for a wide range of applications in the machine tool industry.
Waste Management
Milwaukee Precision Casting, Inc. produces a wide array of standard and customized investment casting products for wastewater treatment equipment.
Mining
Milwaukee Precision Casting, Inc. has long supported the mining and earth-moving industry with mining investment castings built for tough, abrasive environments.
Logging
Milwaukee Precision Casting, Inc. produces a wide array of standard and customized investment casting solutions for the logging industry, including forestry equipment castings, heavy equipment castings, and off-highway machinery castings.
Oil & Gas
Investment castings used in the oil and gas industry must meet the highest standards of quality, durability, and corrosion resistance to withstand extreme operating conditions.Milwaukee Precision Casting produces stainless steel castings and A356 castings used in applications such as ramps, heavy-duty locks, flame and flow control, and even material removal fingers.
Utilities
Milwaukee Precision Casting, Inc. produces a wide array of standard and customized power generation investment castings for the utilities industry.
Agriculture
Agriculture equipment operates in tough, demanding environments, which is why investment castings have been a trusted solution in the industry for decades.
Petrochemical
At Milwaukee Precision Casting, Inc., we specialize in manufacturing high-performance investment castings for the petrochemical industry, where precision, durability, and safety are paramount.
Pumps & Valves
Milwaukee Precision Castings produces near-net shape, high-quality, durable investment castings for pumps and valves.
Gallery
Aluminum Casting Gallery
Frequently Asked Questions
Common Questions
Before Requesting
a Quote
What type of Aluminum Alloys can you cast?
Can different surface finishes be provided for Aluminum Investment Casting?
Can Aluminum Investment Casting be heat treated and are these services offered?
Linear Tolerances
The industry standard linear tolerances for any investment casting
process are ±.005 per
inch of length.
Geometric Tolerances
Effective part configuration is a critical element in achieving strict
tolerances for investment casting. Our team ensures a quality
experience in investment casting.
Minimal Lead Time
Built for complex applications requiring repeatable accuracy and tight dimensional control across production runs.
Accuracy of ± .005 per inch
ISO-certified quality systems with advanced inspection and full traceability from tooling to delivery.
AMS 2175 Compliance
Fast RFQ response, efficient tooling development, and scalable production capacity to meet your schedule.
Competitive Pricing
Cast, machine, finish, and inspect under one roof — reducing lead times and supply chain complexity.
ISO 9001:2015 Certified
DFM reviews and casting optimization from experienced engineers who understand your application requirements.
Advanced Inspection
X-ray, MPI, FPI, HIPing, and dimensional validation ensure every component meets your spec before shipment.
Get a Quote
Request a Precision
Casting Quote
We cast a broad range of alloys — from corrosion-resistant stainless grades to
high-strength tool steels — engineered for demanding industrial, defense, and
energy applications.
Fast RFQ Response
Typical quote turnaround within 1–2 business days
Engineering Support
DFM review and casting optimization included with every quote
Scalable Production
Prototype to high-volume production capability
Full Technical Consultation
Material selection, tolerance review, and process recommendations
