Ironbound Castings for the U.S. Navy & Defense
Navy-spec bronze, nickel aluminum bronze, and Monel castings for propellers, sea valves, hull fittings, pump housings, and structural components — with full MIL-SPEC documentation.
A Foundry With a Long History of Navy Service
The U.S. Navy demands castings that perform flawlessly in the most corrosive and demanding environment on earth — seawater. Every bronze fitting, valve body, and propeller hub that goes aboard a naval vessel must meet exacting MIL-SPEC chemistry and mechanical requirements, with full traceability from the heat of metal to the finished part.
Ironbound Castings has a long history of producing Navy-qualified castings. We pour the full range of Navy-approved bronze alloys — including tin bronze, leaded tin bronze, manganese bronze, nickel aluminum bronze (C95500), and Monel — with complete material certifications, test bars, and inspection reports delivered with every order.
Solutions for U.S. Navy & Defense
Castings & Capabilities
Precision sand castings and in-house services designed for the specific alloy and quality requirements of u.s. navy & defense applications.
Propeller Hubs & Blades
Manganese bronze and nickel aluminum bronze propeller hubs, blade segments, and fixed-pitch propeller castings produced to Navy drawings and MIL-B-21230 specifications.
Learn More
Sea Valves & Hull Fittings
Bronze sea valves, sea chests, through-hull fittings, and strainer bodies produced to MIL-SPEC requirements with full dimensional inspection and pressure test capability.
Learn More
Pump & Valve Bodies
Navy-spec bronze pump housings, valve bodies, and manifolds cast to MIL-B-16541 and related specifications for seawater cooling, firemain, and auxiliary system applications.
Learn More
Structural Bronze Castings
Custom bronze and Monel structural castings for shipboard applications including brackets, bearing housings, stern tube components, and specialty fittings fabricated to customer drawings.
Learn MoreComplete MIL-SPEC Traceability & Documentation
Every Navy casting produced at Ironbound Castings is traceable from melt to finished part. We maintain heat records, chemistry certifications, mechanical property test data, and dimensional inspection reports for every Navy order — providing the complete documentation package required by shipyards, prime contractors, and NAVSEA.
Our pattern shop can work from existing Navy drawings or customer-supplied patterns, and our in-house machining capability means Navy castings can be delivered fully machined, dimensionally inspected, and ready for installation — eliminating the need to coordinate between multiple vendors.
Why Choose Ironbound Castings for Navy & Defense
Navy-Approved Alloys
Full range of Navy-qualified bronze alloys poured in-house — tin bronze, manganese bronze, C95500 nickel aluminum bronze, and Monel
Full MIL-SPEC Documentation
Heat certifications, test bars, mechanical property reports, and dimensional inspection data delivered with every order
In-House Machining
Navy castings machined, bored, faced, and inspected in-house — fully finished and ready for installation
Single-Source Accountability
Pattern making, casting, machining, and inspection under one roof — one purchase order, one point of contact, one quality system
Certifications & Specifications
- MIL-B-16541, MIL-B-21230, and related Navy bronze specifications
- ASTM B584, B505, B271 chemistry and mechanical property testing
- Full heat traceability — chemistry certs and test bars on every heat
- Dimensional inspection to customer drawings with first article capability
- In-house pressure testing available for valve and fitting castings
- NAVSEA documentation packages available on request
- Pattern storage and controlled revision management for repeat orders
Ironbound Castings produces Navy and defense castings to the highest quality standards with complete traceability documentation — from first article through long-term production.
Ready to Get Started?
Contact us today to discuss your u.s. navy & defense project requirements. Our engineering team is ready to develop a custom solution around your specifications.
Request a QuoteExplore Other Industries
Manganese and aluminum bronze for commercial marine fittings, propellers, and hull components.
Corrosion-resistant stainless and nickel alloy castings for offshore and downstream operations.
Bronze and aluminum castings for turbine bearings, pump bodies, and heat exchanger components.
Custom sand castings in any alloy for valves, housings, and precision machine components.
Our Quality
Ironbound Castings produces sand castings to ASTM, MIL-SPEC, ABS, DNV, and customer-specific standards. Every casting is accompanied by full material certifications, test bars, and dimensional inspection documentation.
Downloads & Resources
Bronze Alloy Data Sheets
Chemistry and mechanical property data for all Navy-qualified bronze alloys poured at Ironbound Castings
MIL-SPEC Compliance Guide
Overview of applicable Navy and defense specifications and our documentation capabilities
Request a Quote
Submit your drawing, alloy specification, and quantity for a prompt Navy casting quotation