🟡 BRASS
Brass Machined Parts and Fittings in Tyler, TX for Oilfield and Process Equipment
Among all the machinable metals, free-cutting brass C360 sits at the top of the machinability index, and Tyler's machine shops use that advantage to turn out high-volume valve bodies, compression fittings, instrumentation ports, and custom fluid-system components faster and at lower cost than any ferrous or exotic alternative could match. The East Texas oilfield, agricultural equipment, and general industrial sectors all generate steady demand for brass parts, and the region's CNC shops are well-equipped to handle prototype through production quantities across the principal brass grades. ManufacturingBase connects buyers to Tyler-area brass machinists with current capacity and documented quality processes.
ISO 9001ISO 14001ITAR
C360 Free-Machining Brass: The High-Volume Workhorse at Tyler Machine Shops
C360 (UNS C36000), also called free-cutting brass or free-machining brass, contains 3 percent lead that creates short, brittle chips during machining, enabling cutting speeds of 500 to 700 surface feet per minute on CNC lathes and producing surface finishes of 63 Ra or better without special tooling or process adjustments. This machinability rating of 100 on the standard brass index (the scale against which all other metals are measured) is why Tyler shops that run high-volume turned parts favor C360 whenever the application allows: the combination of speed, tool life, and surface quality reduces cost per piece substantially compared to any alternative.
Tyler oilfield and process equipment builders use C360 for valve stem packing glands, needle valve bodies, compression fitting bodies, gauge connections, hydraulic manifold plug fittings, and any fluid-system component that needs moderate corrosion resistance, reliable thread form quality, and consistent dimensional output across a production run. C360 threads cut cleanly and consistently, hold tight tolerances across long runs, and take standard coatings including tin, nickel, and chrome plating without adhesion problems.
The lead content in C360 raises questions for applications involving potable water contact under NSF 61 or ANSI/NSF 372 lead content standards. For oilfield and industrial process applications in Tyler, lead content is not a regulatory concern, but buyers serving municipal water, food-processing, or other potable-system markets should specify C360-substitute grades such as C37700 (forging brass) or C69300 (silicon-modified low-lead brass) that meet lead-content requirements. Tyler shops can machine these substitute grades, though at somewhat higher tool wear and longer cycle times.
Cartridge Brass C260 for Forming, Deep Drawing, and Structural Applications
C260 (UNS C26000), known as cartridge brass for its historic use in ammunition cases, is the grade Tyler fabricators and stamping shops reach for when the primary operation is cold forming, deep drawing, or bending rather than machining. Its 70 percent copper and 30 percent zinc composition gives it exceptional ductility in the annealed condition, enabling deep drawing ratios and tight-radius bends that harder or higher-lead grades cannot sustain without cracking. East Texas applications include formed instrument panel housings, connector shells, crimp terminal ferrules, flexible shielding braid terminations, and small complex stampings for agricultural equipment control systems.
C260 in the half-hard or full-hard temper offers increased strength (yield strength of 50 to 65 ksi in the half-hard condition) at the cost of reduced ductility, making it suitable for spring contacts, retention clips, and flex circuit backing strips that must maintain spring force through repeated deflection cycles. Tyler shops and nearby metal service centers stock C260 in sheet and strip in standard gauges from 0.010 inch through 0.125 inch, and blanking and forming of C260 strip for small-volume production runs is within the capability of Tyler specialty fabricators.
Machining of C260 is feasible but produces longer chips than C360 because the lower lead content reduces chip breakability. For parts that are primarily formed but require some machined features, a two-step process of forming from C260 sheet followed by drilling or tapping of connection features is common. For parts that are primarily machined, C360 is the better starting material.
Naval Brass for Corrosion Service and Elevated-Temperature Applications
Naval brass (C464, UNS C46400) is the tin-modified brass alloy that resists the dezincification corrosion mode that attacks standard brass grades in certain water chemistries and mildly corrosive environments. The tin addition (approximately 0.75 to 1.25 percent) stabilizes the alpha-beta microstructure and provides meaningful improvement in dezincification resistance and resistance to stress-corrosion cracking (season cracking) compared to uninhibited brasses. In Tyler's industrial context, naval brass appears in marine-adjacent equipment (East Texas has lakes and water-handling infrastructure), heat exchanger tube sheet applications, propeller shaft nuts and lock rings, and valve components in cooling water systems where standard C360 would suffer accelerated dezincification attack.
Naval brass machines somewhat less freely than C360 due to its lower lead content, but remains significantly more machinable than stainless steel and is a practical choice for production CNC turning when the application genuinely requires its corrosion properties. Machinability index is typically rated at 30 to 40 on the brass scale, meaning cycle times and tool wear are higher than C360 but far lower than alloy steels. Surface finishes of 63 Ra are routine, and tolerances of plus or minus 0.001 inch on turned diameters are achievable.
Buyers specifying naval brass should confirm they need its dezincification resistance specifically. For applications where the risk is general corrosion in moderately aggressive atmospheres rather than dezincification in chloride water, C360 with a tin or nickel plating provides adequate protection at lower material cost and better machinability.
Frequently Asked Questions
The 100 percent machinability rating assigned to C360 free-machining brass represents the benchmark against which all other metals are compared. The 3 percent lead content in C360 acts as a built-in cutting lubricant and chip-breaker, producing short, brittle chips that evacuate cleanly and allow cutting tools to engage and disengage the workpiece without the built-up edge, chip wrapping, and tool loading that ductile materials cause. The practical result is that CNC lathes can run C360 at four to six times the cutting speed of 304 stainless steel and approximately twice the cutting speed of 6061 aluminum, with dramatically better tool life. For parts with common features (turned diameters, drilled and tapped holes, knurls), this speed difference translates directly to lower cost per piece, shorter lead times, and more consistent quality across a production run. A simple fitting body that might take three minutes to turn in 316L stainless can often be completed in under one minute in C360, and tool changes happen far less frequently. When the application allows C360 (non-potable water, non-dezincification-risk environments), it is almost always the most cost-effective brass choice.
Brass is used in certain oilfield chemical injection applications but requires careful compatibility evaluation before specification. Brass performs acceptably in contact with many common injection chemicals including corrosion inhibitors, scale inhibitors, and biocides at moderate concentrations and temperatures. It is not suitable for contact with strong acids or bases, concentrated amines (which attack zinc and cause dezincification), or ammonia compounds (which cause stress-corrosion cracking in brass). High-pressure injection service, typically above 3,000 psi, is more commonly handled with stainless steel valve bodies and fittings because code requirements for pressure-rated equipment and concerns about brass creep at elevated temperature under sustained load favor stainless. For low-to-moderate pressure injection at ambient temperature with compatible chemical packages, C360 and naval brass valve bodies, check valve bodies, and instrumentation fittings are cost-effective choices that Tyler shops can supply in prototype or production quantities. Buyers should consult the chemical supplier's material compatibility data and confirm with the fitting manufacturer before committing brass into a chemical injection stream.
Brass is one of the more tolerance-friendly materials to machine, and Tyler CNC turning shops running C360 or naval brass can hold plus or minus 0.001 inch on turned diameters as a standard production tolerance with no special process requirements. Precision fits, such as bearing seats, valve seats, and instrument ports, are routinely machined to plus or minus 0.0005 inch (half a thousandth) with proper tooling and temperature-controlled inspection. Thread tolerances to 2A or 3A class (UN and UNF series) and G or H tolerance classes (metric) are achievable as standard practice. Surface finish of 63 Ra is the baseline for turned surfaces without specific callout; 32 Ra is achievable on fine-finish passes; and 16 Ra or better is possible with diamond-turned or fine-ground operations. The dimensional stability of brass is excellent compared to more thermally sensitive materials because its low coefficient of thermal expansion (relative to aluminum) and modest machining heat generation means parts stay dimensionally consistent throughout a production run without the thermal drift management that aluminum high-speed machining requires.
Dezincification is a selective corrosion mechanism in which the zinc component of brass preferentially dissolves in certain aqueous environments, leaving behind a porous, plug-like copper-rich residue with very little structural strength. The conditions that promote dezincification include chloride-containing water (especially at elevated temperature or pH above 8), slow-moving or stagnant water in the presence of dissolved oxygen, and certain industrial water chemistries. Standard alpha-beta brasses like C360 and C260 are susceptible; naval brass C464 with its tin addition is significantly more resistant; and uninhibited yellow brass in plumbing applications has been largely replaced by dezincification-resistant formulations in regions with aggressive water chemistry. For Tyler oilfield and industrial applications involving non-aqueous process fluids, hydrocarbon gases, instrument air, and dry chemical service, dezincification is not a concern and C360 is appropriate. For cooling water systems, heat exchangers, and any application involving brackish or treated water, specify naval brass C464 or evaluate stainless steel if the water chemistry is particularly aggressive.
Lead-free and low-lead brass grades were developed in response to regulatory restrictions on lead content in materials that contact potable water (NSF 372 maximum 0.25 percent weighted average lead) and in California's Proposition 65 requirements. The primary lead-free alternatives to C360 include C69300 (silicon brass), C87600 (silicon bronze family), and bismuth-selenium substituted grades that attempt to replicate some of C360's chip-breaking behavior using non-toxic additives. These alternatives machine less freely than C360, with machinability indices in the 50 to 70 range rather than 100, meaning longer cycle times and higher tool wear. For the majority of Tyler industrial, oilfield, and process equipment applications involving no potable water contact, there is no regulatory driver to specify lead-free grades, and C360 remains the correct choice. Buyers serving municipal water systems, foodservice equipment, plumbing products sold in California, or any application subject to NSF 61 or NSF 372 certification must specify a compliant lead-free grade and confirm with their Tyler supplier that the grade they are ordering meets the applicable standard with supporting chemistry documentation.
Last updated: July 2026
Find Brass Manufacturers in Tyler, TX
Search verified Tyler shops that work in Brass.
No logins. No email gates. Just results.