The C27450 low lead brass tubes are produced using an alloy made from copper and zinc, with 60-65 percent of copper and 0.25 percent maximum amount of lead in it. This alloy is designed for use in plumbing applications where controlled amounts of lead are required. It features excellent hot forging properties and is quite easy to machine. Thus, C27450 can be used for producing complicated fittings and machined components. Also, this alloy provides great opportunities for electroplating, soldering, and brazing processes depending on fabrication needs. Some of its common uses are production of valve bodies, water meter parts, plumbing fittings, and PEX connectors. Its 0.25% lead maximum meets the NSF/ANSI 372 lead limit for wetted surfaces. It is not zero lead and it is not certified dezincification resistant. Amardeep Steel is a trusted manufacturer and supplier of C27450 low lead brass tubes in India, offering quality-assured products with material test certificates.
Technical Data
Specifications of C27450 Low Lead Brass Tubes
| Parameter | Specification |
|---|---|
|
Material |
UNS C27450 low lead yellow brass |
|
Supply Route |
Hollow bar, extruded tube, or drawn tube made to drawing; chemistry compliant with UNS C27450 |
|
Outside Diameter (OD) |
12 mm to 100 mm |
|
Bore / Inside Diameter (ID) |
From 6 mm; hollow bar available from 20 mm bore |
|
Length |
3 m to 4 m random lengths, or custom cut to length |
|
Supply Tempers |
As extruded, half hard (H02), or hard (H04) |
|
Testing & Inspection |
Chemical analysis with verified lead reporting, hardness, dimensional check, visual inspection; tensile testing on request |
|
Documentation |
EN 10204 3.1 mill test report stating UNS C27450 and actual heat lead percentage; third-party inspection available |
Chemical Compositions of C27450 Low Lead Brass Tubes
| Element | UNS C27450 Specification (%) |
|---|---|
|
Copper (Cu) |
60.0 to 65.0 |
|
Lead (Pb) |
0.25 max |
|
Iron (Fe) |
0.35 max |
|
Zinc (Zn) |
Remainder |
|
Cu + Named Elements |
99.5 min |
Physical Properties of C27450 Low Lead Brass Tubes
| Property | Value |
|---|---|
|
Density |
8.44 g/cm³ |
|
Melting Point (Liquidus) |
916°C |
|
Thermal Conductivity |
116 W/m·K |
|
Electrical Conductivity |
27% IACS |
|
Thermal Expansion (20°C to 300°C) |
20.5 x 10⁻⁶ /K |
|
Modulus of Elasticity |
103 GPa |
C27450 Low Lead Brass Tubes Mechanical Properties
| Property | Value |
|---|---|
|
Tensile Strength |
About 434 MPa |
|
0.2% Proof Strength |
About 324 MPa |
|
Elongation |
About 25% |
|
Hardness |
About 68 HRB |
Equivalent Grades of C27450 Low Lead Brass Tubes
| Standard | Designation |
|---|---|
|
UNS |
C27450 (low lead yellow brass) |
|
EN |
No direct equivalent. Copper range overlaps CuZn36 (CW507L) and CuZn40 (CW509L) |
|
Related UNS Grades |
C27000 (65% copper yellow brass, Pb 0.09% max); C27200 / C27400 (63/37 brasses) |
|
BS / ISO / JIS |
No direct equivalent; legacy designations like CZ109 or ISO CuZn37 are not direct chemistry matches |
Machining, Forging and Joining Properties of C27450 Low Lead Brass Tubes
| Process | Rating / Index |
|---|---|
|
Machinability |
About 70 (compared to C36000 = 100) |
|
Hot Forgeability |
95 (compared to C37700 = 100) |
|
Cold Working |
Excellent |
|
Thread Rolling |
Excellent |
|
Soldering / Brazing |
Excellent |
|
Plating |
Excellent |
Applications and Industrial Uses of C27450 Low Lead Brass Tubes
- Drinking Water Plumbing Fittings
- Water Meter Components
- Brass Valve Bodies
- PEX Plumbing Connectors
- Faucet and Tap Components
- Water Distribution Manifolds
- Plumbing Adapter Fittings
- Sanitary Fixture Components
Frequently Asked Questions
1. What are C27450 low lead brass tubes?
C27450 low lead brass tubes are copper-zinc alloy tubes containing 60-65% copper, designed for plumbing components and applications requiring controlled lead content.
2. What is the maximum lead content in C27450 brass?
C27450 brass contains a maximum of 0.25% lead, making it suitable for applications requiring low-lead materials.
3. What is the machinability rating of C27450 brass?
C27450 brass has a relative machinability rating of approximately 70, offering good machining performance for manufacturing precision components.
4. Is C27450 brass dezincification-resistant (DZR)?
No, C27450 is not inherently classified as DZR brass. It should not be specified for DZR applications without appropriate certification.
5. Is C27450 brass NSF 61 certified?
NSF/ANSI 61 certifies finished products, not the metal alloy itself. C27450 meets the NSF/ANSI 372 lead-content limit, but the finished product manufacturer must obtain the required certification.
6. Are C27450 brass tubes suitable for plumbing fittings?
Yes, C27450 brass tubes are suitable for plumbing fittings, valve bodies, water meter components, and connectors requiring controlled lead content.
7. What does lead-free mean for C27450 brass?
In the US, lead-free plumbing products must have a weighted average lead content of 0.25% or less on wetted surfaces under NSF/ANSI 372. C27450 meets this limit, but it is not completely lead-free.
8. What is the EN equivalent of C27450?
There is no direct EN equivalent. Its copper content range overlaps with CuZn36 (CW507L) and CuZn40 (CW509L), but their compositions are not identical.
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