Brass Machining and Fabrication Suppliers in Bentonville, AR

C260 (70% copper, 30% zinc) is optimized for cold forming rather than machining. Its designation as "cartridge brass" comes from its historical use in ammunition casing production — deep-drawn cups that must form to precise dimensions without cracking — and that forming performance translates directly to a range of Bentonville applications. Sheet metal shops in Northwest Arkansas use C260 for deep-drawn housings, formed enclosures, and complex stampings that require multi-stage forming sequences. Its elongation at break reaches 65-68% in the annealed condition, and its work-hardening rate is moderate enough to allow extensive cold work between annealing cycles. Decorative trim components and architectural hardware pieces used in commercial construction — Bentonville's hotel, restaurant, and mixed-use developments generate steady demand here — are frequently produced from C260 sheet in cold-rolled tempers ranging from quarter-hard (H01) to full-hard (H04). Machining C260 is feasible but less ideal than C360 — its higher ductility means longer, stringier chips and tendency toward built-up edge without sharp, polished tooling and appropriate rake angles. Shops that run both grades keep separate tooling libraries for C260 versus C360, adjusting chip breaker geometry and cutting speeds accordingly. For prototyping and low-volume work where forming tooling isn't justified, CNC machining C260 bar stock is a practical path; for production volumes above roughly 5,000 pieces, progressive die stamping or deep drawing typically produces lower per-piece cost. Brass brazing with BCuP filler or silver-bearing filler alloys joins C260 and similar brasses effectively, and the resulting joints are corrosion resistant and mechanically strong. HVAC and plumbing assembly shops in Bentonville braze C260 fittings using torch and induction heating methods routinely, though joint cleanliness (flux removal, oxidation prevention during heating) requires process discipline to achieve leak-free results consistently.

Naval brass (C464, nominally 60% copper, 39.2% zinc, 0.75% tin) is the specification for brass components in marine-adjacent and high-moisture environments. The tin addition provides meaningful protection against dezincification — the selective leaching of zinc from the brass matrix that leaves behind a porous, weak copper plug in aggressive water environments. In Northwest Arkansas's water treatment and distribution infrastructure, valves and fittings made from standard yellow brass (C260 or C360) occasionally fail through dezincification in chloraminated water supplies; Naval brass and inhibited brass grades are the engineered response. Bentonville's growing industrial base includes water treatment facilities and industrial process water systems where dezincification resistance matters for long-term valve and fitting reliability. Specifying Naval brass or CW602N (European equivalent) for valves in chlorinated or chloraminated water systems adds roughly 15-25% to material cost but eliminates the premature failure mode that dezincification creates. Local plumbing supply distributors increasingly stock Naval brass gate valves and ball valves as an alternative to standard yellow brass for municipal and commercial water applications. For electrical applications requiring better conductivity than C360 (which sacrifices some conductivity for machinability), high-copper brasses like C195 (copper-iron-phosphorus) or cartridge brass C260 in contact spring applications provide intermediate conductivity between pure copper and free-machining brass. Electronics and supply chain automation hardware suppliers in Bentonville running precision connector components occasionally spec these intermediate grades when the combination of 70-85% IACS conductivity and moderate machinability matches their application better than either end of the range.