Product
Product Details
UNS C69300 (ECO BRASS) Lead Free Brass Machined Parts
UNS C69300 (ECO BRASS) Lead Free Brass Machined Parts
Electrical Accessories India manufactures precision UNS C69300 ECO BRASS Lead Free Brass machined parts for electrical OEMs, EPC contractors, power distribution utilities, and industrial distributors worldwide. ECO BRASS (UNS C69300) — also designated CW511L / CuZn37Mn3Al2PbSi (lead-free variant) in some classifications — is the premier lead-free, high-machinability Brass alloy developed specifically as a direct substitute for conventional free-cutting Brass (C36000 / CW614N) in CNC screw machine, multi-spindle, and Swiss-type turning applications. With lead content below 0.09%, C69300 ECO BRASS complies with RoHS 2, REACH, California AB1953, Vermont Act 193, and NSF/ANSI 61 potable-water standards.
Product Overview
Alloy Chemistry and Designation
UNS C69300 ECO BRASS is a multi-component Copper–Zinc alloy with deliberate additions of Silicon, Manganese, and Aluminium to achieve machinability and dezincification resistance without lead. Nominal composition: Cu 75–77%, Zn balance (~21%), Si 2.7–3.5%, Mn 1.5–2.5%, Al 0.5–1.5%, Pb max 0.09%, Fe max 0.2%. The alloy was co-developed by Olin Brass (USA) and Wieland (Germany) under the trademark “ECO BRASS” and is manufactured under ASTM B16, ASTM B124, and ASTM B283 standards for rod, bar, and forgings. The machinability rating is 80% relative to C36000 free-cutting Brass at 100%.
ECO BRASS Machined Parts, Turned Parts, and CNC Components
Our C69300 ECO BRASS machined parts range includes CNC turned components, Swiss-type turned parts, screw machine components, bar-fed automatic lathe parts, multi-axis milled parts, precision bored components, threaded fasteners, and sub-assemblies. Parts are produced from ASTM B16 (C69300 rod for machining) certified stock with full ASTM A484 mill test reports. Typical applications include terminal body blanks, connector housings, valve stem components, instrument fittings, and electrical contact parts.
Electrical and Power Distribution Hardware
C69300 ECO BRASS machined parts are extensively used in electrical switchgear components, earth terminal blocks, busbar connectors, compression cable lugs, cable gland bodies, conduit fittings, grounding clamp screws, DIN-rail terminal housings, circuit breaker components, socket contact inserts, and plug pin assemblies. The combination of high conductivity (~14% IACS), dezincification resistance, and lead-free compliance makes ECO BRASS the preferred material for electrical OEMs mandating green procurement.
Plumbing, Water, and Gas Fitting Components
ECO BRASS C69300 meets NSF/ANSI 61, AB1953 (<0.25% weighted average lead), and EN 15664-1 requirements for potable water contact. Machined fittings include ball valve bodies, compression fitting bodies, push-fit coupling bodies, meter connection unions, manifold blocks, gas meter fittings, irrigation valve bodies, backflow preventer components, and pressure regulator parts.
Fasteners, Threaded Components, and Inserts
C69300 ECO BRASS’s machinability index of 80% (vs. C36000) enables high-volume production of threaded fasteners: hex bolts, machine screws, socket head cap screws, grub screws, studbolts, threaded rod, barrel nuts, hex nuts, flanged nuts, rivet nuts, and press-fit threaded inserts. Thread standards: M2–M64 metric, UNC, UNF, BSP, NPT, G, BSPT. Thread rolling achieves superior surface finish and work-hardened threads compared to cut threading.
Hydraulic, Pneumatic, and Instrumentation Fittings
ECO BRASS machined fittings for hydraulic and pneumatic systems include compression adaptors, hydraulic nipples, elbow fittings, tee fittings, cross-fittings, banjo bolts, pressure test points, sampling valves, thermocouple wells, impulse line fittings, orifice unions, and flow restrictor assemblies. All hydraulic fittings are manufactured to ISO 8434-1 (BSP/DIN type) and SAE J514 (JIC) standards.
Automotive and ELV-Compliant Components
C69300 ECO BRASS is a primary material for ELV (End-of-Life Vehicles Directive 2000/53/EC) compliant automotive components: fuel system fittings, coolant system connectors, brake line adaptors, sensor housings, ABS module fittings, transmission control fittings, and EVAP (evaporative emission control) system components. OEM qualification with EN 10204 3.1 MTC, RoHS declaration, and IMDS (International Material Data System) submission data is available.
OEM Contract Machining and Sub-assembly
Electrical Accessories India offers full contract machining services for C69300 ECO BRASS: CNC turning, milling, drilling, tapping, thread rolling, broaching, reaming, and assembly. Value-added services include nickel plating, tin plating, silver plating, chromate passivation, press-fit assembly, O-ring kitting, and kanban delivery. MOQ from 500 pieces; production capacity to 600,000 pcs/month. First article inspection (FAI), PPAP, and ISIR documentation available.
Key Features
- Highest Lead-Free Machinability: Machinability index ~80% vs. C36000 — the highest among lead-free Copper alloys, enabling direct replacement of conventional Brass in most screw machine applications.
- NSF/ANSI 61 & AB1953 Compliant: Certified safe for potable water contact in USA, EU, UK, and Canada.
- RoHS 2 / REACH / ELV Compliant: Pb <0.09%; No SVHC above threshold; fully compliant for EU market access.
- Dezincification Resistant: Silicon and Aluminium additions provide superior DZR performance per ISO 6509.
- High Tensile Strength: 515–620 MPa UTS in the drawn condition; excellent for high-stress fastener and fitting applications.
- Corrosion Resistance: Excellent resistance to dezincification, stress corrosion cracking, and pitting in chlorinated water and industrial environments.
- Price: US$ 11.50/kg ex-works India, ISO 9001:2015 certified supply.
Machinability and Production Efficiency
ECO BRASS C69300 achieves a machinability index of ~80% relative to C36000 (CuZn36Pb3 / free-cutting Brass), measured by tool life, surface finish, and chip formation at standard cutting parameters. With optimised carbide tooling geometry (positive rake angle, sharp edges, TiAlN coating) and water-soluble cutting fluid, CNC cycle times are typically 15–25% longer than leaded Brass — significantly better than other lead-free alternatives such as Bismuth Brass or CW724R. The alloy produces short, segmented chips on CNC lathes and screw machines, reducing downtime for chip clearing.
Mechanical Properties in Detail
C69300 ECO BRASS in the full-hard drawn condition (H temper): UTS 515–620 MPa, 0.2% proof stress 380–520 MPa, elongation A50 ≥7%, Brinell hardness 140–180 HB, Vickers hardness 145–185 HV. The annealed condition (O temper) provides UTS 400–500 MPa, elongation ≥25% for cold-forming operations. The alloy’s work-hardening rate is moderate, enabling thread rolling and knurling without excessive die wear.
Dezincification Resistance and Corrosion Performance
C69300 ECO BRASS passes ISO 6509 dezincification test (depth of dezincification <200 μm after 24 hours in 1% CuCl₂ solution at 75°C) — classified as DZR (Dezincification Resistant) Brass. It resists pitting corrosion in chlorinated water (Cl⁻ up to 300 mg/L), stress corrosion cracking in ammonia environments (>5× better than conventional Brass in ASTM B858 ammonia atmosphere test), and crevice corrosion under O-ring seals. Salt spray resistance per ISO 9227: >500 hours before dezincification.
Thermal and Electrical Properties
C69300 has thermal conductivity ~116 W/(m·K), electrical conductivity ~14% IACS, thermal expansion coefficient 18.7 μm/(m·K), and modulus of elasticity 100 GPa. These properties make it suitable for earth bonding bars, equipotential bonding connectors, grounding clamps, cable lug bodies, and busbar components where both conductivity and lead-free regulatory compliance are required simultaneously.
Surface Treatment Compatibility
C69300 ECO BRASS accepts all standard electroplating and surface finishing processes: bright acid copper strike, bright nickel plating (EN/ISO 1456), electroless nickel plating (EN/ISO 4527), tin plating, silver plating, gold plating (for signal contacts), zinc-nickel plating, tin-silver (RoHS solder-compatible), chromate conversion coating, and phosphate conversion coating. Surface roughness achievable: Ra 0.4–0.8 μm on bearing bores; Ra 1.6–3.2 μm on general machined surfaces.
Global Regulatory Compliance
C69300 ECO BRASS machined parts from Electrical Accessories India are supplied with full compliance documentation: EN 10204 3.1 Mill Test Certificate, XRF alloy composition certificate, RoHS 2 conformity declaration (Directive 2011/65/EU), REACH SVHC non-use declaration, California AB1953 <0.25% weighted average lead compliance statement, NSF/ANSI 61 material compliance letter (upon request), IMDS data sheet for automotive applications, and TSCA (USA Toxic Substances Control Act) compliance data.
Technical Specifications
| Parameter | Value / Range |
|---|---|
| Alloy Designation (UNS) | C69300 (ECO BRASS®) |
| Copper (Cu) | 75.0 – 77.0% |
| Zinc (Zn) | Balance (~21%) |
| Silicon (Si) | 2.7 – 3.5% |
| Manganese (Mn) | 1.5 – 2.5% |
| Aluminium (Al) | 0.5 – 1.5% |
| Lead (Pb) max | 0.09% |
| Tensile Strength (UTS) | 515 – 620 MPa |
| 0.2% Proof Stress | 380 – 520 MPa |
| Elongation A50 | ≥ 7% |
| Brinell Hardness | 140 – 180 HB |
| Density | 8.5 g/cm³ |
| Machinability Index | ~80% (rel. to C36000) |
| Electrical Conductivity | ~14% IACS |
| Applicable Standards | ASTM B16, ASTM B124, ASTM B283, EN 12164, EN 12167 |
| Lead Compliance | RoHS 2, REACH, AB1953, NSF/ANSI 61, ELV |
| Price (ex-works India) | US$ 11.50 / kg |
International Equivalent Grades
| Standard / Country | Designation | Notes |
|---|---|---|
| UNS (USA) | C69300 (ECO BRASS®) | Primary designation; ASTM B16, B124 |
| EN (Europe) | CW511L / CuZn36Mn1Al (similar) | Closest EN lead-free Brass |
| CW724R | CuZn21Si3P | Similar composition, EN designation |
| JIS H 3250 (Japan) | C6782 (approximate) | Silicon Brass equivalent |
| GB/T (China) | HSi80-3 (approximate) | Silicon Brass |
| GOST (Russia) | ЛМцС 50-1-1 (similar) | Manganese-Silicon Brass |
| Trade Names | ECO BRASS® (Olin / Wieland), SeBiLOY III (similar) | Licensed trademark |
Product Types / Variants
| Product Type | Manufacturing Process | Size Range | Common Application |
|---|---|---|---|
| CNC Turned Parts | Swiss-type / CNC turning | Ø1 – 65 mm | Contact pins, fittings, terminals |
| Screw Machine Parts | Multi-spindle automatic lathe | Ø3 – 40 mm | Fasteners, nipples, couplings |
| Milled Components | CNC machining centre (3–5 axis) | Up to 250 × 250 mm | Valve bodies, manifolds, housings |
| Forged and Machined | Hot forging + CNC finish-machining | DN6 – DN100 | Ball valve bodies, heavy fittings |
| Threaded Fasteners | Turning + thread rolling | M2 – M64, BSP, NPT | Bolts, studs, nuts, inserts |
| Custom OEM Assemblies | Machining + assembly + plating | Per drawing | Sub-assemblies, kits |
Applications by Industry
| Industry Sector | Typical C69300 ECO BRASS Components |
|---|---|
| Electrical / Switchgear OEM | Terminal blocks, earth bars, cable gland bodies, compression lugs, busbar connectors |
| Potable Water / Plumbing | Ball valve bodies, compression fittings, manifold blocks, meter unions (NSF/AB1953) |
| Gas Systems | Gas meter fittings, regulator components, service valves, meter bypass fittings |
| Automotive (ELV) | Fuel system fittings, coolant connectors, sensor housings, brake line adaptors |
| HVAC / Refrigeration | Expansion valves, service ports, refrigerant fittings, manifold gauges |
| Industrial / Oil & Gas | Instrument fittings, thermocouple wells, impulse line fittings, pressure adaptors |
| Electronics / Telecom | RF connector bodies, coaxial shells, PCB standoffs, EMI shielding components |
| Renewable Energy | Solar DC connector hardware, wind turbine grounding components, PV combiner box parts |
Manufacturing Process
Raw material: ASTM B16 / EN 12164 certified C69300 ECO BRASS extruded rod, sourced from certified mills (Wieland, Mueller Industries, or Indian equivalents) with EN 10204 3.1 MTC. Incoming inspection by XRF spectrometer and Brinell hardness testing. CNC machining on Swiss-type lathes (Ø1–32 mm parts) and CNC turning centres with live tooling (Ø6–65 mm parts). Multi-axis machining centres (3, 4, and 5-axis) for complex geometry milled parts. Secondary operations: tapping, reaming, broaching, knurling, thread rolling, cross-drilling. Dimensional inspection by CMM (Mitutoyo / Zeiss), optical comparator, and calibrated gauge sets. Ultrasonic cleaning, desiccant packaging, and moisture-barrier export packing. All first-article parts are fully dimension-reported per AS9102 or customer-specific FAIR requirements.
Quality Standards and Certifications
| Standard / Certification | Scope / Applicability |
|---|---|
| ISO 9001:2015 | Quality Management System – full scope manufacturing |
| ASTM B16 | C69300 free-cutting Brass rod and bar |
| ASTM B124 | C69300 Brass forgings |
| EN 12164 / EN 12167 | Brass rod/bar for free machining (European equivalent) |
| RoHS 2 (2011/65/EU) | Lead-free compliance – Pb <0.09% |
| REACH (EC 1907/2006) | No SVHC substances above threshold |
| NSF/ANSI 61 | Drinking water system components |
| California AB1953 / Vermont Act 193 | Lead-free plumbing (<0.25% weighted average Pb) |
| ISO 6509 | Dezincification resistance test |
| EN 10204 3.1 | Material test certificates with each lot |
Why Choose Electrical Accessories India for C69300 ECO BRASS Machined Parts
Electrical Accessories India is an established ISO 9001:2015 certified precision machining manufacturer with dedicated production lines for lead-free Brass alloys including C69300 ECO BRASS and CW724R. Our technical team provides DFM (Design for Manufacturability) review, alloy substitution guidance, and first-article qualification support. We supply to over 40 countries with competitive pricing at US$ 11.50/kg ex-works India, short lead times of 3–5 weeks, and full compliance documentation. Our quality lab is equipped with XRF spectrometer, CMM, surface profilometer, salt spray chamber, and thread gauge inventory for 100% outgoing inspection on critical fastener and fitting dimensions.
Frequently Asked Questions (FAQ)
What is C69300 ECO BRASS?
C69300 ECO BRASS (also written as UNS C69300) is a lead-free, high-machinability Copper–Zinc–Silicon–Manganese alloy developed as a direct substitute for conventional free-cutting Brass (C36000). It contains <0.09% lead and achieves a machinability index of ~80% relative to C36000.
How does C69300 ECO BRASS compare to C36000 free-cutting Brass?
C69300 has a machinability index of ~80% vs. 100% for C36000. Cycle times are 15–25% longer. However, C69300 offers dramatically superior corrosion resistance, dezincification resistance, and full compliance with RoHS, REACH, AB1953, and NSF standards that C36000 cannot meet.
Is C69300 ECO BRASS approved for drinking water applications?
Yes. C69300 ECO BRASS is compliant with NSF/ANSI 61 (USA), California AB1953 (<0.25% weighted average Pb), Vermont Act 193, EN 15664-1 (EU), and WRAS (UK). It is approved for use in all potable water contact applications in North America, Europe, and Australia.
What is the price of C69300 ECO BRASS machined parts?
Our ex-works India price is US$ 11.50 per kilogram. Final pricing depends on part complexity, order volume, and surface finish. Contact us with your drawing or sample part for a formal quotation within 48 hours.
What is the minimum order quantity for ECO BRASS parts?
Minimum order quantity is 500 pieces per part number. High-volume production (≥10,000 pcs) qualifies for volume pricing and dedicated machine slots. We also accept tooling amortization arrangements for new part development.
Can C69300 ECO BRASS replace CW614N (CuZn39Pb3) directly?
Yes, in most applications. C69300 ECO BRASS is a direct functional replacement for CW614N / C36000 leaded free-cutting Brass. Tooling parameters require minor adjustment (increased cutting speed, optimised rake angle), but part dimensions, tolerances, and thread forms remain identical.
What surface finishes are available for ECO BRASS machined parts?
Available finishes include: as-machined, bright polished, satin/brushed, nickel plated (bright or satin), tin plated (matte or bright), silver plated, gold plated, zinc-nickel plated, and chromate passivated. Custom PVD and electroless nickel coatings are available on request.
Do you provide PPAP documentation for C69300 ECO BRASS parts?
Yes. We provide PPAP Level 1–3 documentation including dimensional reports, material certificates, RoHS declarations, control plans, and MSA data. IMDS (automotive) submissions are available upon request.
What thread standards do you machine in C69300 ECO BRASS?
We machine all standard thread forms: Metric (M, MF, Tr), UNC, UNF, UNEF, BSP (BSPP), BSPT, NPT, NPTF, SAE, G (ISO 228), and Pg (conduit) threads. Custom thread profiles are available with approved thread form drawings.
What are the export markets for C69300 ECO BRASS parts?
We export to Germany, UK, France, Netherlands, USA, Canada, UAE, Saudi Arabia, Qatar, South Africa, Nigeria, Australia, Singapore, Malaysia, and 30+ additional countries. Export documentation includes commercial invoice, packing list, certificate of origin, and phytosanitary/fumigation certificates where required.
International Terms and Equivalents
| Language | Equivalent Terms (3–4 terms) |
|---|---|
| Spanish (Español) | Latón ECO BRASS C69300, Piezas mecanizadas de latón sin plomo UNS C69300, Latón libre de plomo C69300 |
| Russian (Русский) | ECO BRASS C69300 безсвинцовая латунь, Обработанные детали из латуни C69300, Латунь без свинца UNS C69300 |
| French (Français) | Laiton ECO BRASS C69300, Pièces usinées en laiton sans plomb C69300, Laiton sans plomb UNS C69300 |
| Portuguese (Português) | Latão ECO BRASS C69300, Peças usinadas em latão sem chumbo C69300, Latão livre de chumbo UNS C69300 |
| Italian (Italiano) | Ottone ECO BRASS C69300, Parti lavorate in ottone senza piombo C69300, Ottone senza piombo UNS C69300 |
Related Products / Internal Links
- CW724R (CuZn21Si3P) Lead Free Brass Machined Parts
- Lead Free Brass Screw Machine Parts
- Lead Free Brass Forgings
- C360 Brass Screw Machine Parts
- Brass CNC Machined Parts
- C87850 Brass Fittings and Brass Machined Parts
Request a Quote – C69300 ECO BRASS Machined Parts
Electrical Accessories India – ISO 9001:2015 certified manufacturer of UNS C69300 ECO BRASS Lead Free Brass machined components. Price: US$ 11.50/kg ex-works India. Full RoHS / REACH / NSF / AB1953 compliance documentation. Export worldwide.
Contact us with your drawing or specifications for a quotation within 48 hours. Contact Form | Back to Stamped & Machined Parts
