C27450 Low Lead Brass is made from UNS C27450, which is yellow brass having a copper content of 60.0 - 65.0%, 0.25% max lead, and balanced zinc. The lead content in C27450 is much lower than in C36000 (having a lead content of 2.5 - 3.0% and machinability of 100). Thus, C27450 is low-lead brass with a much lower machinability level equal to 70. C27450 brass material does not belong to dezincification-resistant grades and is low-lead, not lead-free brass alloy. UNS C27450 is not mentioned in ASTM B135 standards, therefore, the tube is available only as a seamless tube or hollow bar according to mill specifications confirmed at the order stage. Possible alternative materials are C27400 63/37 Lead Free Brass Tubes and CZ121 Lead Free Brass Tubes. USA Piping Solution assists industrial buyers in selecting brass materials that meet their application requirements.
Specifications of C27450 Low Lead Brass Tubes
| Property / Parameter | Specification / Detail |
|---|---|
| UNS Designation | UNS C27450 |
| Common Trade Name | Low Lead Yellow Brass |
| Alloy Category | Wrought Alpha-Beta Yellow Brass |
| Lead Classification | Low lead (Pb 0.25% max). Not lead-free. Wetted use needs NSF/ANSI 61 and 372 certification of the finished component. |
| Dezincification Resistance (DZR) | Non-DZR (Lacks inhibitors like arsenic, antimony, or phosphorus) |
| Standard Scope / Listing | CDA UNS Wrought Alloy Designation List (Not listed in ASTM B135 for seamless tube) |
| Overlapping EN Designations | CW507L (CuZn36) and CW509L (CuZn40) (Approximate chemical overlaps; no single exact match) |
| Related Alloys | UNS C27400 (63/37 brass, lower lead limit, listed in ASTM B135), UNS C36000 (standard leaded free-cutting brass reference) |
| Primary Industrial Applications | Low-lead plumbing fittings, gas line connectors, meter parts, electrical terminal sleeves, precision CNC turned components |
| Manufacturing Product Forms | Seamless tube, heavy-wall hollow bar, and custom-extruded tubular profiles |
| Compliance & Regulatory Frameworks | RoHS Compliant under Exemption 6(c); NSF/ANSI 61 & 372 applicable at component level |
| Quality & Material Certification | Material Test Certificate to EN 10204 3.1; full heat traceability |
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Applications and Industrial Uses of C27450 Low Lead Brass Tubes
- Plumbing Components and Fittings
- Industrial Valve Components
- Brass Hardware Manufacturing
- Machinery Components
- Refrigeration Equipment Components
- Marine Equipment Components
- Electrical and Electronic Hardware
- Bathroom and Sanitary Fittings
Frequently Asked Questions
What are C27450 low lead brass tubes?
C27450 low lead brass tubes are made from a yellow brass with 60 to 65% copper and 0.25% maximum lead, used where moderate machinability and good cold working are needed.
Is C27450 brass lead-free?
No. C27450 is a low-lead brass alloy, not a lead-free material.
What is the machinability rating of C27450 brass?
C27450 has a machinability rating of 70 on the scale where free-cutting brass C36000 = 100.
Is C27450 brass resistant to dezincification?
No. C27450 is not generally classified as a dezincification-resistant (DZR) brass alloy.
What is the difference between C27450 and C27400 brass?
C27450 allows up to 0.25% lead and 60 to 65% copper. C27400 is a 63/37 brass with a lower lead limit and is listed in ASTM B135; C27450 is not.
Is C27450 brass suitable for potable water applications?
Not automatically. Its suitability depends on applicable lead-content requirements, certifications, and approval for the intended drinking-water system.
Material Test Certificate to EN 10204 3.1; full heat traceability.
Send your specification to USA Piping Solution for a same-day quote with confirmed lead times.
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