What cast brass and bronze grades does Fimex produce?

Fimex casts 14 brass and bronze grades validated by Quality, organized as: leaded red brass (C83600), leaded semi-red brass (C84400), tin bronze (C90300, C90500, C92200), aluminum bronze (C95200, C95300, C95500, C95800), manganese bronze (C86200, C86300, C86500) and silicon bronze (C87500, C87600, C87800, C87850). Custom brass and bronze compositions are quoted on request after engineering review.

Does Fimex cast C95800 nickel aluminum bronze (NAB)?

Yes. C95800 is one of our standard aluminum bronze grades, cast under ASTM B148 / B763 and equivalent to EN 1982 CC333G-GS and DIN CuAl10Fe5Ni5-C. Pump impellers are a typical part in this grade.

What's the difference between brass and bronze in Fimex's catalog?

Brass is copper + zinc (Red Brass C83600, Semi-Red C84400, Manganese Bronze family C86200/C86300/C86500 which is technically high-strength yellow brass). Bronze is copper + tin or other alloying elements (Tin Bronze C90xxx, Aluminum Bronze C95xxx, Silicon Bronze C87xxx). Fimex's catalog covers both families and clients can specify by UNS code, EN/DIN designation or commercial name.

Does Fimex make ASTM B584 leaded red brass C83600?

Yes. C83600 (leaded red brass 85-5-5-5, also known as gunmetal or ounce metal, EN 1982 CC491K, DIN CuSn5Zn5Pb5) is one of our highest-volume grades for general-purpose valve bodies, pump casings and plumbing fittings under ASTM B62 / B584.

What is the cast copper-aluminum bronze grade equivalent of CuAl10Fe5Ni5?

CuAl10Fe5Ni5 (EN 1982 CC333G, DIN designation) is equivalent to UNS C95500 and C95800 under ASTM B148 / B763. Both are nickel-aluminum bronzes (NAB) produced by Fimex.

Does Fimex offer closed-die brass forging in addition to casting?

Yes. Fimex offers closed-die brass forging for parts ranging from 0.44 lb to 2.87 lb (0.200 – 1.300 kg), in addition to casting (green sand and permanent mold). Forging delivers enhanced grain structure, higher strength and better fatigue resistance for parts requiring maximum structural integrity.

Brass

Brass Castings & Machining

Fimex is a brass and bronze castings supplier and foundry with 61 years engineering copper-alloy castings for the most demanding industries, and a nearshoring partner for the United States, Canada, and Mexico with USMCA-compliant supply. Red brass, tin bronze, aluminum bronze, manganese bronze, silicon bronze and lead-free alloys, cast and CNC-machined under one roof.

Typical parts include valve bodies, pipe fittings, pump housings, bushings, and plumbing components.

Casting Weight Range

0.44 – 17.6 lbs

Supplied as-cast or fully CNC-machined

Materials

Brass & Bronze Alloy Families

Leaded Alloys

Red Brass

Traditional leaded red brass for general-purpose valve bodies, pump casings and plumbing fittings.

Semi-Red Brass

Leaded semi-red brass for plumbing fittings, valve bodies and pump impellers.

Lead-Free Alloys

Tin Bronze

Copper-tin alloys for high-load bearings, gears, valve stems and steam-service components.

Aluminum Bronze

Copper-aluminum alloys with outstanding strength and corrosion resistance: pump impellers, valve components, and water-infrastructure parts.

Manganese Bronze

High-tensile copper-zinc alloys (high-strength yellow brass) for heavy-duty gears, marine winches and deck hardware.

Silicon Bronze

High-strength, lead-free copper-silicon alloys for marine, chemical and water-service valves, pumps and bushings.

Custom Alloys

Custom Brass & Bronze Alloys

Customer-specified and proprietary brass and bronze alloy compositions. Each request is reviewed and validated by our engineering team before quoting.

Typical Industries

Industrial ValvesPlumbing & FittingsWater InfrastructureMarineOil & GasHydraulicsBearingsFood ProcessingMedical

Manufacturing Process

Brass Manufacturing Process

Pattern Engineering & Simulations

The client provides the product design. Fimex engineers how to cast it with in-house CAD/CAM using SolidWorks, PowerSHAPE, and PowerMill for pattern development and mold design. Wood, resin, or metal patterns fabricated to spec. Casting simulation with SolidCast to optimize geometry, predict shrinkage, and minimize defects before production.

Core Production

Complex cores manufactured using two systems: Hot Box and Cold Box. Ceramic and silica sand cores ensure accurate internal channels and cavities, even for highly intricate geometries.

Mold Preparation

Two molding processes for brass and bronze: Green Sand and Permanent Mold. Green sand molds are produced on an FBO flaskless molding machine, with cores set in place before the mold is closed. Each method selected to optimize part quality, dimensional accuracy, and output for brass and bronze alloys.

Melting & Pouring

Induction furnaces for brass and bronze alloys. With varied casting processes: Standard, Gravity, and Low-Pressure (Permanent Mold). Chemical analysis per heat ensures precise alloy composition. Controlled pouring temperature and speed for optimal casting integrity and traceability.

Cooling & Shakeout

Controlled cooling rates to achieve target microstructure and mechanical properties. Sand separation and reclamation systems minimize waste and ensure sand quality for reuse in subsequent production cycles.

Cleaning & Finishing

Grinding, shot blasting, and robotic polishing cells remove gates, risers, and surface imperfections. Parts inspected before advancing to machining.

Machining

Dedicated brass machining floor (NEW 2024-2026): CNC machining centers, lathes, and cobots (robotic arms). Purpose-built for brass and bronze alloy families with the latest technology.

Assembly & Pressure Testing

Dedicated assembly area for final part integration. Components are assembled, and valves undergo pressure and leak testing to ensure compliance with customer specifications.

Inspection & QC

Full dimensional, metallurgical, and NDT inspection per customer specifications. Destructive testing (Charpy impact, tension/tensile, cross-section cuts). Non-destructive: ultrasonic, liquid penetrant, magnetic particle, radiographic, hardness, chemical analysis, dimensional, visual, leak testing, and pressure testing. 3D scanning for reverse engineering and dimensional verification. Every brass and bronze part is verified before shipment.

Independent Process

Forging

Brass Alloys Only

Fimex offers closed-die forging for brass alloys, producing parts ranging from 0.44 lb to 2.87 lb (0.200 – 1.300 kg). This process delivers superior mechanical properties through controlled deformation of heated metal.

Forging produces parts with enhanced grain structure, higher strength, and better fatigue resistance compared to cast equivalents, which makes it the right choice for components that require maximum structural integrity.

Closed-die forging

Brass alloys

Higher fatigue resistance

Superior mechanical properties

Enhanced grain structure

0.44 – 2.87 lbsPart Range

Process Strengths

Three Core Strengths

Casting

Two processes: Green Sand Casting · Permanent Mold. The right method selected for each brass and bronze alloy, geometry, and volume requirement.

Machining

Dedicated brass machining floor (NEW 2024-2026): CNC machining centers, lathes, and cobots (robotic arms). Purpose-built for brass and bronze alloy families with the latest technology.

Forging

Closed-die forging for brass alloys. Parts from 0.44 lb to 2.87 lb (0.200 – 1.300 kg) with superior mechanical properties, enhanced grain structure, and higher fatigue resistance.

Technical Questions

Cast brass and bronze grades, standards and equivalents

Fimex casts 14 brass and bronze grades validated by Quality, organized as: leaded red brass (C83600), leaded semi-red brass (C84400), tin bronze (C90300, C90500, C92200), aluminum bronze (C95200, C95300, C95500, C95800), manganese bronze (C86200, C86300, C86500) and silicon bronze (C87500, C87600, C87800, C87850). Custom brass and bronze compositions are quoted on request after engineering review.

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Share your specs with our engineering team. Custom brass and bronze alloys and low-to-medium volume production.

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Quality & Certifications

Brass Castings & Machining

Typical parts include valve bodies, pipe fittings, pump housings, bushings, and plumbing components.