331524: Aluminum Foundries (except Die-Casting)
The code for foundries that pour aluminum into sand, permanent, investment, and similar molds to make castings for other manufacturers.
NAICS 331524 in numbers
Everything behind these numbers for NAICS 331524
- Every buying office that awarded in this code, ranked by what they spent
- Every vendor that won, resolved to one record per business
- Every award back to FY2001, searchable and exportable
- Contracts ending soon, scored for how open the next round looks
- Every open notice on this code, with the buyer history beside it
The numbers above are open to anybody. The organized record behind them is what a plan pays for: every award, every buyer, every vendor, cleaned, resolved and read again every night.
Open right now under NAICS 331524
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What this code covers
Census assigns 331524 to foundries that melt purchased aluminum and pour it into molds other than die casting dies. Sand casting, permanent mold, investment casting, and plaster and lost foam methods all belong here. Die casting has its own code, and foundries pouring other metals are classified by metal.
For defense and aerospace that means housings, gearbox and pump cases, manifolds, brackets, covers, valve bodies, ground vehicle and support equipment parts, and the rough castings a machine shop finishes. Many foundries also do heat treat, impregnation, and rough machining before shipment.
What federal buyers typically ask for
DLA posts cast spares by stock number across its aviation, land, and maritime supply chains, often as finished parts that include the casting and machining together. Depots and fleet readiness centers post castings for overhaul lines. NASA centers post castings for test and ground equipment. Much of the demand arrives through machine shops that hold the award and buy the casting from you.
Casting buys cite a classification and inspection specification that sets a grade and class for the part. Expect radiographic and penetrant inspection on critical areas, chemistry and mechanical test bars per lot, heat treat certs, and first article with a full inspection report. Government-owned patterns are common on legacy parts. Critical aviation castings often carry an approved source list, so source approval is the gate. Aluminum is not a specialty metal, but steel inserts in a finished part are. Drawings are frequently export controlled.
Small business set-asides are common on non-critical castings. Critical items go unrestricted to approved sources.
PSC codes that often pair with this NAICS
| PSC | Name | Why it matters |
|---|---|---|
| 1560 | Airframe Structural Components | Cast brackets and fittings. |
| 2840 | Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components | Cast engine housings and covers. |
| 1650 | Aircraft Hydraulic, Vacuum, and De-icing System Components | Cast manifolds and valve bodies. |
| 2520 | Vehicular Power Transmission Components | Cast gearbox cases for vehicles. |
| 4320 | Power and Hand Pumps | Cast pump housings. |
| 2995 | Miscellaneous Engine Accessories, Aircraft | Cast accessory housings. |
Castings post under the PSC of the finished part. Look for casting drawings in the technical data.
Before you bid
Find the casting grade and class on the drawing and price the inspection it demands. Radiography on a critical class can cost more than the pour, and a missed class is a common reason a first article fails.
Related guides
- For specialty suppliersHow LastAwarded fits a foundry.
- Local suppliersMachine shops near you that buy castings.
- Award historyWho won each cast part last.
See who was last awarded in your NAICS
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