331524 - Aluminum Foundries (except Die-Casting)

Aluminum castings are critical components across many manufacturing sectors, and understanding the industry standards helps businesses position themselves effectively in government contracting and commercial markets. NAICS code 331524 specifically defines the Aluminum Foundries (except Die-Casting) industry, a vital subsector in the manufacturing sector responsible for producing precision aluminum castings for diverse applications.

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What is NAICS Code 331524?

NAICS code 331524 covers establishments primarily engaged in manufacturing aluminum castings, excluding die-casting processes. These foundries create a variety of aluminum castings that serve industries such as automotive, aerospace, machinery manufacturing, and more. Their role is essential in supplying high-quality aluminum parts that meet strict specifications and performance standards.

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Sector Overview: Manufacturing

This NAICS code falls within the Manufacturing sector, which is pivotal in driving industrial innovation and economic growth. Companies classified under code 331524 operate aluminum foundries that produce castings predominantly through techniques like:

• Sand Casting
• Investment Casting
• Permanent Mold Casting

These processes result in aluminum castings that are either unfinished or require further machining, but always maintain high standards of quality and precision.

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Key Business Activities Under NAICS 331524

Businesses operating under this classification typically engage in:

• Aluminum sand casting foundries
• Aluminum investment casting foundries
• Aluminum permanent mold casting foundries

These companies cater to markets needing lightweight, durable aluminum parts used in engines, aerospace frames, industrial machinery, and consumer vehicles.

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Size Standards & Employee Count

For government contracting and small business considerations, the size standard under NAICS 331524 is generally defined by the number of employees. The threshold is:

• 550 employees

Businesses with fewer than 550 employees typically qualify as small businesses in this category, making them eligible for various government contracting programs designed to support small and medium manufacturers.

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Examples of Businesses in NAICS 331524

• Regional aluminum sand casting foundries producing automotive parts
• Investment casting companies specializing in aerospace-grade aluminum components
• Manufacturers utilizing permanent mold casting techniques for machinery base frames

These companies often collaborate with government agencies and prime contractors looking for specialized aluminum castings.

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Detailed NAICS Code 331524 Description Table

Code Detail	Description
Aluminum castings (except die-castings), unfinished	Production of unfinished aluminum castings
Aluminum foundries (except die-casting)	Establishments operating aluminum casting foundries
Castings (except die-castings), unfinished, aluminum	Unfinished aluminum castings other than die-castings
Investment castings, aluminum, unfinished	Manufacturing of unfinished aluminum investment castings
Permanent mold castings, aluminum, unfinished	Unfinished aluminum castings via permanent mold process
Sand castings, aluminum, unfinished	Unfinished aluminum castings via sand casting method

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FAQ About NAICS Code 331524

What types of aluminum castings are excluded under NAICS 331524?

NAICS 331524 excludes die-casting processes. It focuses on all other aluminum casting methods like sand casting, investment casting, and permanent mold casting.

Which industries commonly use aluminum castings from foundries in this code?

Automotive, aerospace, machinery manufacturing, electronics, and defense industries are among the primary customers.

How does a business determine if it qualifies as a small business under NAICS 331524?

If the company has 550 or fewer employees, it is generally considered a small business for SBA size standards under this NAICS code.

Are aluminum castings under this code finished or unfinished products?

Typically, the castings produced are unfinished, meaning additional machining or finishing processes are performed downstream.

Can businesses that perform die-casting be classified under NAICS 331524?

No, companies that primarily perform die-casting fall under a different NAICS code (331522) – Aluminum Die-Casting Foundries.

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Conclusion

Understanding NAICS code 331524 - Aluminum Foundries (except Die-Casting) is essential for manufacturers, suppliers, and contracting officers seeking to identify the scope and opportunities within this specialized sector. From aluminum sand castings to investment castings, companies in this industry play a crucial role in supplying lightweight and durable components for a broad range of industrial applications. With a clear grasp of the code, size standards, and typical business types, companies can better target their business development efforts and government contracting bids.

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Keywords: NAICS code 331524, Aluminum Foundries, aluminum castings manufacturing, aluminum sand casting, investment casting foundries, permanent mold casting foundries, aluminum castings industry, manufacturing sector, government contracting aluminum foundries