Brass Machining & Screw Machine Shops in Tulsa, OK

C360 is free-machining brass, the workhorse for machined parts. It contains lead that acts as a chip breaker and lubricant, giving it outstanding machinability, high cutting speeds, excellent surface finish, and long tool life, which makes it the default for high-volume screw machine and CNC work like fittings, valve components, and instrument hardware. C260, known as cartridge brass, has a higher copper content and no significant lead, which makes it more ductile and better suited to forming, drawing, bending, and applications needing better corrosion resistance, but it machines noticeably worse than C360. The practical rule for Tulsa shops is that machined parts favor C360 for throughput, while formed or drawn parts favor C260. The exceptions are driven by service requirements: if the part contacts potable water, the lead in C360 may make it non-compliant and a low-lead alloy is required, and if the environment risks dezincification, a more resistant grade may be needed. Define how the part is made and where it serves, then pick the grade accordingly.

Dezincification is a form of corrosion specific to brass, which is a copper-zinc alloy. In certain environments, particularly some waters and fluids, the zinc selectively dissolves out of the alloy, leaving behind a weakened, porous, copper-rich structure that has lost much of its strength. A fitting that has dezincified can become brittle and leak or fail under pressure, sometimes with little outward warning. You should worry about it when brass parts are exposed to aggressive or stagnant water, certain process fluids, or chloride-bearing environments, especially in plumbing and water-handling applications. Where dezincification is a concern, the solution is to specify a dezincification-resistant brass or an alternative alloy designed to resist the mechanism. For typical oilfield and industrial brass parts handling air, hydraulic oil, or benign fluids, dezincification generally is not a factor and standard brass is fine. The key is to tell your supplier the actual service environment at quote time so the right alloy is selected, because catching this after a field failure is far more expensive.

Yes. Traditional free-machining brass like C360 contains lead to aid machinability, and lead leaching into drinking water is a regulated health concern. Parts that contact potable water are subject to low-lead requirements, which limit the lead content of wetted surfaces. To comply, you must specify a low-lead or no-lead brass alloy formulated for potable-water service rather than standard leaded brass, and you should verify compliance through certification. When sourcing brass fittings or valve components for any drinking-water application in Tulsa, tell the supplier explicitly that the part is potable-water service, require a compliant alloy, and ask for the low-lead compliance documentation with the parts. The mistake to avoid is assuming a standard brass fitting is acceptable for water use; a leaded C360 part may be perfectly good for oilfield or industrial fluid service but non-compliant for drinking water, and discovering that after the parts are made or installed creates a costly and potentially serious compliance problem.

For standard industrial brass parts, the core document is the material certificate confirming the alloy, typically tied to the supplier's heat or lot, so you can verify you received C360, C260, or whatever grade was specified. If the part is plated, request a plating certificate documenting the plating material and thickness. For potable-water applications, the low-lead compliance certification is essential and should reference the applicable standard. For pressure-containing fittings, confirm the pressure rating and request any required pressure test or certification, since a fitting that carries fluid under pressure has real consequences if it fails. The documentation burden on brass is generally lighter than on aerospace alloys because most brass parts serve commercial and industrial roles rather than flight-critical or code-stamped ones, but for regulated or pressure service the certs matter. The practical approach is to match the documentation to the application's risk and regulatory exposure, demanding more for water and pressure service and accepting a basic material cert for benign industrial parts.