NAICS 331529 Quarterly Industry Report
Other Nonferrous Metal Foundries (except Die-Casting)
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 331529Sector: 33Updated: Q1 2026
About This Report
This industry profile for Other Nonferrous Metal Foundries (except Die-Casting) (NAICS 331529) draws on data from the U.S. Census Bureau[6], Bureau of Labor Statistics[10], and SBA size standards database[7]. Published by Fair Market Value and updated quarterly, it provides valuation professionals, metals casting analysts, and marine and industrial supply chain investors with current market data. All quantitative claims are sourced to publicly verifiable databases.
Industry Snapshot
Key metrics for the other nonferrous metal foundries (except die-casting) industry.
Industry Definition & Overview
Other Nonferrous Metal Foundries (except Die-Casting) (NAICS 331529) encompasses establishments primarily engaged in pouring molten nonferrous metals other than aluminum into molds to manufacture castings per the U.S. Census Bureau[5]. Activities include bronze sand casting, brass permanent mold casting, copper alloy centrifugal casting, titanium investment casting, zinc gravity casting, nickel alloy casting, and casting of ship and boat propellers in bronze and brass alloys.
Nonferrous foundries in this classification produce castings from copper-based alloys (brass and bronze), titanium, zinc, nickel, and other specialty metals for marine, military, industrial, and infrastructure applications. Bronze and brass castings serve marine propeller, pump, valve, and bearing applications where seawater corrosion resistance and anti-galling properties are required. Titanium foundries produce investment castings for aerospace structural components, medical implant devices, and chemical processing equipment operating in corrosive environments. Per Census Bureau[6] data, roughly 110 establishments employ over 9,300 workers generating more than $2.5 billion in annual revenue with payroll exceeding $480 million. Centrifugal casting produces tube, bushing, and bearing shapes by spinning molten metal in rotating molds, with bronze bearings and bushings representing a major product category for industrial machinery and marine equipment.
Per the SBA Table of Size Standards[7], the size standard is 500 employees. The EPA[8] regulates air emissions from melting furnaces processing copper, zinc, and other nonferrous alloys at foundry operations. OSHA[9] enforces safety standards for molten metal handling, furnace operations, and chemical exposure including zinc fume and copper dust in nonferrous casting production environments.
What's Included in This Industry
- Bronze sand casting production
- Brass permanent mold casting
- Copper alloy centrifugal casting
- Titanium investment casting
- Zinc gravity casting operations
- Nickel alloy casting production
- Ship and boat propeller casting
- Bronze bearing and bushing casting
- Specialty alloy pattern and core making
- Nonferrous casting heat treatment and finishing
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Primary Metal Manufacturing | 331 |
| Industry Group | Foundries | 3315 |
| NAICS Industry | Nonferrous Metal Foundries | 33152 |
| National Industry | Other Nonferrous Metal Foundries (except Die-Casting) | 331529 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 331524 | Aluminum Foundries (except Die-Casting) | Aluminum Foundries produces aluminum castings through sand, permanent mold, and investment methods alongside nonferrous foundries casting bronze, brass, and titanium within the broader nonferrous casting sector |
| 331523 | Nonferrous Metal Die-Casting Foundries | Nonferrous Metal Die-Casting Foundries produces high-pressure castings in aluminum and zinc that complement the gravity casting methods used for bronze, brass, and titanium components in this classification |
| 331420 | Copper Rolling, Drawing, Extruding, and Alloying | Copper Rolling, Drawing, Extruding, and Alloying produces brass and bronze alloy ingot that nonferrous foundries purchase as charge material for melting and casting into marine, industrial, and infrastructure components |
| 336611 | Ship Building and Repairing | Ship Building and Repairing purchases bronze and brass propellers, shaft bearings, seawater valves, and hull fittings from nonferrous foundries producing marine-grade castings resistant to saltwater corrosion |
| 332919 | Other Metal Valve and Pipe Fitting Manufacturing | Other Metal Valve and Pipe Fitting Manufacturing uses bronze and brass castings for valve bodies, fittings, and pump components serving water distribution, chemical processing, and marine piping system applications |
| 339113 | Surgical Appliance and Supplies Manufacturing | Surgical and Medical Instrument Manufacturing purchases titanium and cobalt-chrome investment castings for orthopedic implants and surgical devices requiring biocompatible alloys with precise dimensional specifications |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Ohio | 12.6% | 27 |
| 2 | Pennsylvania | 12.6% | 27 |
| 3 | California | 9.3% | 20 |
| 4 | Illinois | 7.4% | 16 |
| 5 | Oregon | 5.6% | 12 |
| 6 | Michigan | 4.7% | 10 |
| 7 | Indiana | 4.2% | 9 |
| 8 | Utah | 3.7% | 8 |
| 9 | Wisconsin | 3.7% | 8 |
| 10 | Rhode Island | 3.3% | 7 |
% Of Establishments
0%
13%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
8
Total SBA Loans
$40.0M
Total Loan Volume
$5.0M
Average Loan Size
10 yrs
Average Loan Term
10.00%
Average Interest Rate
288
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: Per the SBA Table of Size Standards[7], Other Nonferrous Metal Foundries (except Die-Casting) (NAICS 331529) has a size standard of 500 employees for federal small business contracting purposes. SBA lending programs[11] support qualifying nonferrous foundry operations including melting equipment, molding systems, and centrifugal casting machine investments. Eligible businesses can access SBA 7(a) loans[12] for working capital, equipment, and acquisition financing, while 504 loans[13] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | KeyBank National Association | 8 | $40.0M | $5.0M |
Frequently Asked Questions
Common questions about this industry.
What is the NAICS code for bronze and brass foundries?
NAICS 331529 covers other nonferrous metal foundries producing bronze, brass, copper, titanium, zinc, and nickel castings through sand, permanent mold, and investment methods per the U.S. Census Bureau[5].
What is the SBA size standard?
Per the SBA size standard[7], the threshold is 500 employees for federal small business contracting eligibility and SBA lending products for nonferrous foundry operations excluding die-casting.
How large is this industry?
Per Census Bureau[6] data, roughly 110 establishments employ over 9,300 workers generating more than $2.5 billion in annual revenue with payroll exceeding $480 million across bronze, brass, titanium, and other nonferrous casting operations.
What metals are cast in these foundries?
Bronze, brass, copper alloys, titanium, zinc, nickel, lead, tin, and specialty alloys per Bureau of Labor Statistics[10] product classification, with copper-based alloys representing the largest production volume category.
What is centrifugal casting?
Centrifugal casting spins molten metal in rotating molds to produce tube, bushing, and ring shapes per Census Bureau[6] process classification, with centrifugal force distributing metal against the mold wall for dense, consistent bearing and bushing products.
What are primary end markets?
Marine equipment, industrial pump and valve components, military hardware, water distribution infrastructure, and aerospace structural parts per Census Bureau[6] shipment data represent primary markets for nonferrous castings in this classification.
What environmental regulations apply?
The EPA[8] regulates air emissions from nonferrous melting furnaces processing copper, zinc, tin, and other alloys, with specific standards for metal fume particulate, volatile organic compounds from core binders, and wastewater from quench operations.
What safety standards apply?
OSHA[9] enforces workplace safety standards for molten nonferrous metal handling, zinc fume exposure limits in brass melting operations, furnace maintenance procedures, and heavy casting handling in nonferrous foundry production environments.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Census Bureau data.census.gov
- [7]SBA Table of Size Standards sba.gov
- [8]EPA epa.gov
- [9]OSHA osha.gov
- [10]Bureau of Labor Statistics bls.gov
- [11]SBA lending programs sba.gov
- [12]SBA 7(a) loans sba.gov
- [13]504 loans sba.gov
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