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Lead Free Brass Tubes
Product Overview
Lead Free Brass Tubes offered by R V Metal Corporation are engineered specifically for applications where potable water safety, regulatory compliance, and long-term corrosion resistance are critical. Manufactured using carefully controlled copper–zinc alloys with extremely low lead content (typically ≤0.25% or as per regional regulations), these tubes fully comply with modern health, plumbing, and drinking water standards such as NSF, ASTM, EN, and IS requirements. The absence of lead eliminates the risk of water contamination while ensuring safe use in residential, commercial, and industrial fluid systems.
These lead free brass tubes retain the excellent machinability, strength, and corrosion resistance traditionally associated with brass, while offering enhanced dezincification resistance and superior hygiene performance. Available in seamless form with precise dimensional control, uniform wall thickness, and smooth internal surfaces, they ensure reliable flow characteristics and long service life. R V Metal Corporation supplies lead free brass tubes in multiple sizes, tempers, and finishes, making them ideal for plumbing systems, potable water lines, valves, fittings, sanitary hardware, and OEM components where safety, durability, and international compliance are non-negotiable.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Lead Free Brass Tubes |
| Manufacturer | R V Metal Corporation |
| Material Type | Lead-Free Brass (Low Lead / Zero Lead Alloy) |
| Typical Lead Content | ≤ 0.25% (Compliant with potable water regulations) |
| Manufacturing Process | Seamless Extruded & Drawn Tubes |
| Form Supplied | Straight Lengths / Cut-to-Length / Custom Fabricated |
| Outside Diameter Range | 6 mm to 150 mm (Custom sizes available) |
| Wall Thickness Range | 0.8 mm to 10 mm (As per standard & application) |
| Length | Standard 3 m, 4 m, 6 m or as per customer requirement |
| Temper Condition | Soft (Annealed), Half-Hard, Hard Drawn |
| Surface Finish | Mill Finish / Bright Finish / Polished / Coated |
| Corrosion Resistance | Excellent resistance to dezincification and potable water corrosion |
| Pressure Rating | As per wall thickness and applicable standard |
| Standards Compliance | ASTM, EN, IS, NSF, ISO (as applicable) |
| Primary Applications | Potable water plumbing, valves, fittings, sanitary hardware, OEM components |
| Testing | Chemical Analysis, Dimensional Inspection, Eddy Current Testing (Optional) |
| Customization | Sizes, tempers, lengths, and finishes as per customer drawings/specifications |
Chemical Composition
| Element | Composition (% by Weight) | Functional Role |
|---|---|---|
| Copper (Cu) | 60.0 – 65.0 | Base metal providing strength, corrosion resistance, and thermal conductivity |
| Zinc (Zn) | Balance | Improves machinability and mechanical strength |
| Lead (Pb) | ≤ 0.25 | Restricted to ensure potable water safety and regulatory compliance |
| Tin (Sn) | ≤ 1.0 | Enhances dezincification resistance and corrosion protection |
| Iron (Fe) | ≤ 0.10 | Grain refinement and added mechanical strength |
| Aluminium (Al) | ≤ 0.50 | Improves oxidation resistance and alloy stability |
| Nickel (Ni) | ≤ 0.30 | Enhances corrosion resistance and toughness |
| Arsenic (As) | ≤ 0.15 | Provides protection against dezincification in water applications |
| Other Impurities | ≤ 0.20 (Total) | Controlled to maintain alloy purity and performance |
UNS Codes & Grades
| UNS Code | EN / European Grade | Common Name | Lead Content (%) | Key Characteristics | Typical Applications |
|---|---|---|---|---|---|
| C27450 | CW601N | Lead-Free Yellow Brass | ≤ 0.25 | Good formability, corrosion resistance, potable-water safe | Plumbing tubes, sanitary fittings, water distribution systems |
| C27400 | CW602N | Low-Lead Brass | ≤ 0.10 | Improved machinability with very low lead, dezincification resistant | Drinking water tubes, valves, HVAC tubing |
| C46500 | CW510L | Eco Brass / Lead-Free Brass | ≤ 0.05 | High strength, excellent corrosion resistance, DZR compliant | Potable water systems, marine fittings, heat exchanger tubes |
| C69300 | CW724R | Silicon Brass (Lead-Free) | ≤ 0.10 | Superior dezincification resistance, high mechanical strength | Plumbing tubes, press-fit systems, industrial piping |
| C87850 | — | Bismuth Brass (Lead-Free) | ≤ 0.05 | Lead-free machinability using bismuth, eco-compliant | Potable water tubing, green building applications |
Mechanical, Physical & Fabrication Properties
| Property Category | Property | Typical Value / Range | Remarks (Lead-Free Brass Tubes) |
|---|---|---|---|
| Mechanical Properties | Tensile Strength | 350 – 550 MPa | Depends on alloy (CW510L / CW724R) and temper |
| Yield Strength (0.2%) | 120 – 300 MPa | Higher than conventional leaded brass | |
| Elongation | 15 – 45 % | Excellent ductility in annealed condition | |
| Hardness | 60 – 150 HB | Soft (annealed) to hard-drawn tempers | |
| Physical Properties | Density | 8.3 – 8.6 g/cm³ | Slight variation based on alloying elements |
| Melting Range | 900 – 950 °C | Lower than pure copper, good brazability | |
| Thermal Conductivity | 110 – 140 W/m·K | Lower than copper but sufficient for plumbing & HVAC | |
| Electrical Conductivity | 20 – 30 % IACS | Not used where high conductivity is critical | |
| Coefficient of Thermal Expansion | 19 – 21 ×10⁻⁶ /°C | Stable under temperature fluctuations | |
| Fabrication Properties | Formability | Excellent | Ideal for bending, flaring, expanding |
| Machinability | Good | Lower than leaded brass, improved with bismuth/silicon | |
| Brazing / Soldering | Excellent | Compatible with silver & copper-phosphorus brazing alloys | |
| Weldability | Good | TIG/MIG recommended with proper filler selection | |
| Dezincification Resistance | High (DZR) | Suitable for potable water & aggressive environments | |
| Stress Corrosion Cracking | Resistant | Superior to standard CuZn brasses |
Common Names & International Identifiers
| Common / Trade Name | UNS Designation | EN / DIN Designation | ISO Designation | ASTM / SAE | Typical Application Identifier |
|---|---|---|---|---|---|
| Lead-Free Brass | C27450 / C69300 | CW724R / CW508L | CuZn21Si3P | ASTM B36 / B135 | Potable water plumbing tubes |
| Eco Brass | C69300 | CW724R | CuZn21Si3P | ASTM B124 / B135 | Low-lead drinking water systems |
| Silicon Brass | C87500 | CW724R (Equivalent) | CuZn21Si3P | ASTM B584 | Valves, fittings, extruded tubes |
| Low-Lead Brass | C68000 / C87850 | CW510L | CuZn42 | ASTM B36 | Regulated plumbing & HVAC tubing |
| DZR Lead-Free Brass | C35200 (Pb-free variant) | CW602N | CuZn36Pb2As* | ASTM B455 | Dezincification-resistant plumbing |
| Arsenic-Stabilized Brass | C68700 | CW510L-As | CuZn20Al2As | ASTM B36 | Potable water & marine fittings |
Standards & International Equivalents
| Region | Standard | Material / Grade | Description | Typical Application |
|---|---|---|---|---|
| International | ISO 228 / ISO 6509 | CuZn21Si3P | Lead-free brass alloy for potable water contact | Drinking water tubes & fittings |
| USA | ASTM B36 / ASTM B135 | C69300 | Lead-free silicon brass seamless tubes & pipes | Plumbing, HVAC, potable water systems |
| USA | ASTM B124 / ASTM B584 | C69300 / C87500 | Extruded lead-free brass tubes & shapes | Valves, fittings, manifolds |
| Europe (EN) | EN 12164 / EN 12165 / EN 12168 | CW724R | Lead-free brass for potable water installations | Water supply & heating systems |
| Germany (DIN) | DIN EN 12164 | CW724R | Dezincification-resistant, lead-free brass alloy | Plumbing & sanitary installations |
| United Kingdom | BS EN 12164 / BS EN 12168 | CW724R | Approved brass alloy for drinking water | WRAS-compliant plumbing systems |
| Japan | JIS H3250 / JIS H3300 | C69300 Equivalent | Low-lead / lead-free brass tubing alloys | Water & refrigeration tubing |
| India | IS 319 (Part 2) | Lead-Free Brass (Special) | Indian standard for brass tubes with controlled lead | Potable water & sanitary applications |
| Australia / NZ | AS/NZS 1566 | C69300 Equivalent | Lead-free brass plumbing tube standard | Potable water systems |
| Middle East | SASO / GSO | CW724R / C69300 | Approved lead-free brass for potable use | Municipal & commercial water networks |
Applications
| Application Sector | Specific Use | Why Lead-Free Brass is Used | Relevant Standards / Compliance |
|---|---|---|---|
| Potable Water Systems | Drinking water supply tubes | Zero lead leaching, safe for human consumption | ASTM B135 (C69300), EN 12164 (CW724R), NSF-61, WRAS |
| Plumbing & Sanitary Installations | Hot & cold water plumbing lines | Complies with global lead-free plumbing regulations | EN 12165 / EN 12168, IS 319 (Special) |
| HVAC Systems | Water circulation & condenser tubing | High corrosion resistance and long service life | ASTM B135, EN 12449 |
| Valves & Fittings Manufacturing | Valve bodies, manifolds, couplings | Excellent machinability without toxic lead additives | ASTM B584, EN 12164 |
| Medical & Healthcare | Water lines in hospitals & labs | Hygienic, non-toxic, antibacterial surface properties | NSF-61, ISO 228 |
| Food & Beverage Industry | Process water & beverage handling tubes | No contamination risk, safe for food contact | FDA, EN 12165, NSF-61 |
| Solar & Renewable Energy | Solar water heater piping | High temperature stability and corrosion resistance | ASTM B135, EN 12449 |
| Residential & Commercial Buildings | Green building plumbing infrastructure | Meets LEED and sustainable building requirements | LEED, WRAS, NSF-61 |
| Marine & Coastal Installations | Fresh water distribution onboard vessels | Improved dezincification and salt-water resistance | EN 12164 (DZR-Lead Free) |
| OEM & Export Projects | Global plumbing component supply | Universal acceptance across US, EU & Middle East | ASTM + EN dual-compliance |
Standard Lead-Free Brass Tubes Dimensional Chart
| Lead-Free Brass Tubes – Standard Dimensional & Theoretical Weight Chart (Indicative) | |||||||
|---|---|---|---|---|---|---|---|
| Nominal Size | OD (mm) | OD (inch) | Wall (mm) | ID (mm) | Area (mm²) | Theoretical Weight (kg/m) | Typical Form |
| 1/4" | 6.35 | 0.250 | 0.80 | 4.75 | 13.96 | 0.119 | Coil / Straight |
| 3/8" | 9.52 | 0.375 | 0.90 | 7.72 | 24.37 | 0.208 | Coil / Straight |
| 1/2" | 12.70 | 0.500 | 1.00 | 10.70 | 36.67 | 0.313 | Coil / Straight |
| 5/8" | 15.88 | 0.625 | 1.00 | 13.88 | 46.70 | 0.399 | Straight |
| 3/4" | 19.05 | 0.750 | 1.20 | 16.65 | 67.22 | 0.575 | Straight |
| 1" | 25.40 | 1.000 | 1.50 | 22.40 | 112.72 | 0.964 | Straight |
| 1-1/4" | 31.75 | 1.250 | 1.60 | 28.55 | 151.48 | 1.295 | Straight |
| 1-1/2" | 38.10 | 1.500 | 1.80 | 34.50 | 205.03 | 1.753 | Straight |
| 2" | 50.80 | 2.000 | 2.00 | 46.80 | 306.56 | 2.621 | Straight |
| 2-1/2" | 63.50 | 2.500 | 2.20 | 59.10 | 424.36 | 3.630 | Straight |
| 3" | 76.20 | 3.000 | 2.50 | 71.20 | 578.12 | 4.945 | Straight |
Note: Theoretical weight is calculated using a typical lead-free brass density of ~8.5 g/cm³ (8,500 kg/m³) and is provided as an indicative engineering reference. Actual weight varies with alloy (e.g., C69300/C27450 equivalents), temper, manufacturing tolerances, and finish (polished, coated, etc.). For EPC / potable water projects, final selection should be confirmed against the applicable standard (ASTM / EN / IS) and buyer-approved tolerances.
