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NAICSSector 33
U.S. imports of steel investment castings (NAICS 331512) totaled $14.7M in April 2026, traded with 44 countries.
Importers of Steel Investment Castings paid $6.9M in duties in April 2026 — an effective duty rate of 55% on $12.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataProduced by the lost-wax (investment casting) process, steel castings in NAICS 331512 achieve dimensional tolerances and surface finishes unattainable by sand casting, making them indispensable for aerospace turbine components, defense hardware, oil and gas valve bodies, and medical implant structures. The process accommodates a wide range of steel alloys — carbon, low-alloy, stainless, and heat-resistant grades — allowing engineers to specify mechanical properties precisely. Because many steel investment castings serve defense and aerospace end uses, importers may encounter Export Administration Regulations (EAR) or ITAR considerations on the buyer side, and should verify whether the casting's alloy and application trigger any controlled-article review.
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Steel investment castings span carbon steel, low-alloy steel, martensitic and austenitic stainless steels, and high-temperature nickel-bearing grades. HTS classification of the finished casting depends primarily on the article's function and metal composition — stainless steel castings, for example, fall under different HTS provisions than carbon steel castings. Importers should confirm the alloy composition on the mill certificate and match it to the correct HTS chapter to avoid misclassification.
Steel investment castings that meet the definition of a 'steel article' under the Section 232 proclamations — generally articles with steel as the component of chief value — are subject to Section 232 tariffs unless a product exclusion has been granted. Importers should review the Commerce Department's Section 232 product exclusion database and consult a licensed customs broker to determine whether a specific casting and country of origin combination carries Section 232 exposure.
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Monthly import values over time
No geographic breakdown available
U.S. trade for this product is not broken down by state or port in the latest Census Bureau release.