CW614N – CuZn39Pb3 Brass Machined Parts and CNC Machined Components

Price: US$ 13.40 / Kilogram (Indicative) — Material: CW614N Brass (CuZn39Pb3) | Min. Order: 1 Kilogram | Supply Ability: As per requirement. Price varies by specification, quantity and finish; contact us for a firm quote.

CW614N Brass Parts, Machined CW614N Parts, CuZn39Pb3 Brass Machined parts and CNC machined Components.

Overview: CW614N (CuZn39Pb3) Brass Machined Parts and CNC Machined Components

Brass & Copper Parts manufactures CW614N brass machined parts and CNC machined components from its ISO 9001:2015 certified manufacturing plant in Jamnagar, India. CW614N is the current EN 12164 / EN 12165 designation for CuZn39Pb3 leaded free-cutting brass, the single most specified free-machining copper alloy in Europe for turned, milled, drilled and tapped components. We supply CW614N bar-turned and CNC-milled parts across bar diameters of 3 mm to 100 mm, machined on CNC lathes, multi-spindle bar machines, Swiss-type turning centres and 3/4/5-axis CNC milling machines, to customer drawings, EN/ISO tolerances and full material traceability. CW614N corresponds to CZ121 (British Standard legacy), ASTM/CDA C36000, IS 319 Type-I (India), JIS C3604 (Japan) and the historical HPb59-1/HPb59-2 references, giving OEM buyers and EPC contractors a single verified source for cross-referenced free-cutting brass components across export markets including the EU, UK, USA, Middle East and Southeast Asia.

What is CW614N Brass?

CW614N is a two-phase (alpha-beta) copper-zinc-lead alloy defined under EN 12164 (cold drawn rod) and EN 12165 (extruded rod, bar and section), with nominal composition CuZn39Pb3: 57.0-59.0% copper, 2.5-3.5% lead, balance zinc. The beta-phase content gives high hot-workability for extrusion and forging, while the free lead particles distributed through the matrix act as internal chip-breakers during machining. CW614N is the direct successor designation to the former DIN CuZn39Pb3, BS CZ121 and pr EN references used before EN numbering was harmonised across the European Committee for Standardization (CEN). Because of this, CW614N appears interchangeably with CuZn39Pb3, CZ121, and C36000 across international engineering drawings, and correct cross-referencing of these designations is essential for material certificate compliance.

CW614N Machinability and Metallurgical Structure

CW614N brass achieves a machinability rating of approximately 100 on the CDA free-cutting brass index, the reference benchmark against which all other engineering alloys are measured. The insoluble lead phase shears cleanly ahead of the cutting tool, producing short discontinuous chips rather than long stringy swarf, which permits high spindle speeds, minimal tool wear, and unattended multi-spindle and Swiss-type automatic bar machining. Tensile strength in the cold-drawn condition ranges 360-500 MPa with 0.2% proof stress of 140-320 MPa depending on temper (R rating), giving CW614N sufficient strength for pressure-retaining fittings, structural pins, and load-bearing machined components while retaining excellent formability for secondary knurling, staking and swaging operations.

CNC Machining Capability: Turning, Milling and Multi-Axis Operations

Beyond simple bar-turned parts, CW614N is extensively used for CNC milled and multi-axis machined components requiring pockets, slots, cross-holes, flats, and non-rotational geometry. Our CNC machining shop runs 3-axis and 4-axis vertical machining centres alongside CNC turning centres with live tooling and Y-axis capability, allowing complex CW614N components to be completed in a single setup without secondary operations. Typical capabilities include contour milling to +/-0.02 mm, cross-drilling and tapping in the same cycle as turning, back-working (second-operation) on twin-spindle machines, and 5-axis machining for complex manifold and valve body geometries. This combined turning-and-milling capability differentiates our CW614N machined components offering from simple screw-machine-only suppliers.

Surface Finish, Tolerance and Thread Capability

CW614N delivers a clean, burr-minimised surface straight off the tool due to the lead-assisted chip breaking action, typically Ra 0.8-1.6 micrometres as-turned and Ra 0.4 micrometres or better after fine finish-turning or centreless grinding. Standard CNC turning tolerance is +/-0.02 mm on diameter and length; precision turning achieves +/-0.005 mm; centreless grinding after turning achieves +/-0.002 mm with roundness within 0.001 mm TIR. Thread forms produced in CW614N include BSP (ISO 7-1), NPT (ASME B1.20.1), metric ISO 965, UNC/UNF, BSW, BSF and BA, with thread class 6H/6g (ISO) or 2A/2B (ANSI) standard and 3A/3B available on precision work.

Corrosion Resistance and Application Suitability

CW614N gives good resistance to atmospheric corrosion, fresh water, industrial gases, oils, and general indoor/outdoor exposure. It is not recommended for continuous immersion in seawater, ammonia-bearing environments, or high-chloride process fluids, where season cracking and dezincification risk increases; dezincification-resistant (CW602N/DZR) or lead-free alloys should be specified instead for potable water or marine duty. For general-service electrical enclosures, plumbing fittings, pneumatic components, and indoor/outdoor electrical hardware, CW614N remains the most cost-effective and widely available free-cutting brass grade.

Electrical and Thermal Properties

CW614N brass exhibits an electrical conductivity of approximately 26% IACS and thermal conductivity of approximately 113 W/m.K, sufficient for terminal bodies, connector housings, bus-bar studs, cable gland bodies, and switchgear hardware where CW614N is used as a structural and conductive element rather than a primary current-carrying conductor. This makes CW614N machined components a standard specification across electrical OEM, EPC, and power-utility procurement for panel hardware, terminal blocks, earthing components, and cable accessories.

Material Forms and Bar Stock Availability

CW614N is stocked and processed as cold-drawn round rod (EN 12164), extruded round bar, hexagonal bar, square bar and flat bar/section (EN 12165), in diameters from 3 mm to 200 mm depending on form. Bar stock is sourced from EN 12164/12165 certified rolling mills with full EN 10204 3.1 material test certificates confirming composition, mechanical properties and dimensional tolerance class (h9/h10/h11 typical for cold-drawn; h12/h13 for extruded), ensuring full traceability from raw material through to finished CW614N machined component.

Key Features of CW614N Brass Machined Parts

• Machinability Index ~100: Benchmark free-machining performance for CNC turning, milling and multi-spindle automatic bar machining.
• Close Tolerance Capability: +/-0.005 mm on precision-turned diameters; +/-0.02 mm standard; centreless-ground finishes to +/-0.002 mm.
• Full Thread Range: BSP, NPT, metric, UNC/UNF, BSW, BSF and BA threads produced with calibrated gauging.
• Good General Corrosion Resistance: Suitable for atmospheric, fresh-water and industrial-gas service; not for seawater or ammonia environments.
• Electrical Conductivity 26% IACS: Suited to terminal, connector and switchgear hardware.
• Broad Bar Stock Availability: Round, hex, square and flat sections from EN 12164/12165 certified mills.
• Multi-Process Capability: CNC turning, milling, drilling, tapping, and centreless grinding within one integrated production flow.

CNC Turning Precision

CW614N bar stock is processed on single-spindle and multi-spindle CNC turning centres with sub-spindle back-working, producing shafts, bushings, spacers, nipples, adaptors and studs in a single continuous cycle. Bar capacity ranges 3 mm to 65 mm on multi-spindle machines and up to 100 mm on single-spindle CNC lathes. Live tooling stations perform cross-drilling, flat-milling and slotting without removing the part from the collet, eliminating re-clamping errors and improving concentricity between turned and milled features. Dimensional reports and Cpk data are issued for every production lot.

Multi-Axis Milling Capability

Non-rotational and complex-geometry CW614N components including valve bodies, manifold blocks, sensor housings, and bracket-type parts are produced on 3 and 4-axis CNC machining centres. Programmable tombstone and multi-vice fixturing allows simultaneous machining of multiple components per cycle, reducing cost for medium and high-volume milled component orders. Pocket milling, contour profiling, chamfering and cross-drilling are performed to a positional tolerance of +/-0.05 mm and true position callouts per drawing GD&T requirements.

Thread Machining Range

CW614N threaded features are produced by single-point thread turning, thread milling, thread rolling and tapping depending on thread form, class and production volume. BSP (parallel and taper), NPT, metric coarse/fine, BA, BSW and BSF threads are all machined in-house with Go/No-Go gauge verification traceable to NPL/NIST reference standards on 100% of critical threaded features, and thread-ring/plug gauge calibration certificates available on request.

Surface Finish and Deburring

Post-machining, CW614N components pass through vibratory tumbling for burr removal, ultrasonic alkaline cleaning to remove coolant and swarf residue, and optional barrel polishing for a bright decorative finish where Ra 0.4-0.8 micrometres is required. Passivation, lacquering or anti-tarnish treatment is applied where extended storage or humid-climate export transit is specified.

Corrosion and Environmental Performance

CW614N is suitable for indoor and outdoor atmospheric exposure, general water service (non-potable), lubricants, hydraulic oil, compressed air and industrial gas systems. Where potable water contact, marine immersion, or ammonia-bearing atmospheres apply, we recommend DZR brass (CW602N) or a lead-free alloy instead, and our technical team can advise on the correct substitution without redesign of the component.

Electrical and Thermal Properties

With 26% IACS conductivity and 113 W/m.K thermal conductivity, CW614N is specified for terminal bodies, cable gland components, earthing hardware, bus-bar studs and switchgear parts across electrical OEM and power-utility applications, typically with tin, nickel or silver plating applied to functional contact surfaces for enhanced conductivity and corrosion protection.

Technical Specifications: CW614N (CuZn39Pb3) Brass

CW614N International Grade Equivalents

CW614N Raw Material Forms and Dimensional Tolerance

Product Types and Variants

CW614N CNC Turned Components

Bushings, spacers, shafts, nipples, couplings, studs and standoffs machined on single and multi-spindle CNC lathes, held to +/-0.005-0.02 mm with complete dimensional and EN 10204 3.1 documentation.

CW614N CNC Milled and Multi-Axis Components

Valve bodies, manifold blocks, bracket components, sensor housings and non-rotational parts machined on 3/4-axis vertical machining centres with pocket milling, contour profiling and cross-drilling in a single setup.

CW614N Threaded Fittings and Adaptors

BSP, NPT, metric and UNC/UNF threaded nipples, adaptors, couplings and unions for plumbing, pneumatic and hydraulic connection, gauge-verified on 100% of critical threaded features.

CW614N Electrical and Switchgear Components

Terminal bodies, cable gland parts, bus-bar studs, earthing lugs and connector housings for electrical OEM, EPC contractor and power-utility panel-building applications, supplied plated or unplated per specification.

CW614N Precision Ground Components

Valve stems, gauge pins, spool valve components and bearing journals requiring tolerances beyond standard CNC turning, finished by centreless or cylindrical grinding to +/-0.002 mm.

Applications by Industry

Manufacturing Process for CW614N Machined Parts

Step 1 – Material Verification: CW614N rod/bar received from EN 12164/12165 certified mills with EN 10204 3.1 MTC; incoming XRF confirms Cu/Zn/Pb composition.

Step 2 – Programming and First-Off: CNC turning/milling programs verified, first-off part machined and fully inspected before production release.

Step 3 – CNC Turning: Bar stock fed through collet/bar-feeder; cutting speeds of 150-300 m/min with minimal coolant due to lead-assisted lubrication.

Step 4 – CNC Milling / Multi-Axis Operations: Pocket milling, contour profiling, cross-drilling and tapping performed with tombstone or multi-vice fixturing for volume efficiency.

Step 5 – Thread Production and Gauging: Threading by single-point turning, rolling or tapping; 100% Go/No-Go gauge verification traceable to NPL/NIST.

Step 6 – Deburring and Finishing: Vibratory tumbling, ultrasonic cleaning, optional barrel polishing and plating (tin, nickel, silver) per specification.

Step 7 – Final Inspection: CMM dimensional inspection, surface roughness check, thread gauging and visual inspection per AQL 1.0 (critical)/2.5 (major); SPC Cpk greater than or equal to 1.33 required for release.

Step 8 – Packing and Export: Compartmentalised packing with desiccant; export set includes EN 10204 3.1 MTC, inspection report, packing list, commercial invoice and Certificate of Origin (India).

Quality Standards and Certifications

• ISO 9001:2015 certified quality management system
• Material certified to EN 12164 (cold drawn rod) / EN 12165 (extruded bar); CZ121, C36000 and HPb59-1 cross-reference on request
• EN 10204 Type 3.1 material test certificate with composition and mechanical properties
• Thread gauging per ISO 7-1 (BSP), ISO 965 (metric), ASME B1.20.1 (NPT), BS 1580 (BA)
• Dimensional inspection per ISO 1101 GD&T requirements
• SPC-controlled production, Cpk greater than or equal to 1.33 on critical dimensions
• RoHS 2 Annex III Category 6(c) exemption for lead content in copper alloys
• REACH SVHC declaration provided; PPAP Level 1-3 available for automotive/OEM procurement

Why Choose Brass and Copper Parts for CW614N Machined Parts

• Turning and Milling Under One Roof: CNC turning, multi-spindle screw machining and 3/4-axis milling integrated in a single production flow, avoiding multi-vendor coordination.
• Jamnagar Manufacturing Base: Located in a leading Indian hub for brass machining with direct access to EN 12164/12165 certified CW614N bar stock.
• Cross-Standard Documentation: Material certificates cross-reference CW614N to CZ121, C36000, IS 319 and HPb59-1 for global procurement compliance.
• Volume Flexibility: From 100-piece prototype batches to multi-million-piece annual programs on multi-spindle bar machines.
• Export-Ready Compliance: EN 10204 3.1 MTC, RoHS and REACH declarations, PPAP documentation and Certificate of Origin issued as standard.
• Competitive Landed Cost: 25-40% cost saving versus EU and UK domestic machining at comparable quality, with 4-6 week lead time.

Frequently Asked Questions

What is CW614N brass used for?

CW614N is used for CNC turned and milled components including fittings, terminals, connectors, valve parts, sensor housings and threaded adaptors across electrical, plumbing, automotive, pneumatic and instrumentation applications, wherever high-speed free machining and moderate strength are required.

Is CW614N the same as CZ121?

Yes. CW614N is the current EN 12164/12165 designation for the same alloy formerly specified as CZ121 under the withdrawn BS 2874 standard. Composition and mechanical properties are equivalent; we can provide CZ121 cross-reference on the material certificate for legacy drawing compliance.

Is CW614N the same as C36000?

CW614N and ASTM C36000 are closely equivalent free-machining brass alloys with comparable machinability index (~100). The main difference is copper content: CW614N specifies 57-59% Cu while C36000 specifies 60-63% Cu. Both are functionally interchangeable for most machining applications, though the material certificate must reference the correct standard for the applicable specification.

What is the difference between CW614N and CW617N?

CW614N (CuZn39Pb3) contains 2.5-3.5% lead for maximum machinability. CW617N (CuZn40Pb2) contains a lower 1.6-2.5% lead content and slightly different zinc ratio, giving somewhat lower machinability but marginally improved cold-forming characteristics. CW614N is preferred for high-speed CNC turning and screw machine work.

Can CW614N be welded or brazed?

CW614N has poor weldability due to zinc volatilisation and porosity risk during fusion welding; brazing and soft soldering are the recommended joining methods. Mechanical joining, press-fitting and threaded assembly are the preferred methods for CW614N machined components.

What is the RoHS status of CW614N?

CW614N lead content (2.5-3.5%) falls under the RoHS 2 Annex III Category 6(c) exemption for lead as an alloying element in copper, permitting continued use in electrical and electronic equipment. RoHS declarations are issued with every shipment on request.

What tolerances can be achieved on CW614N CNC machined parts?

Standard CNC turning: +/-0.02 mm diameter and length. Precision turning: +/-0.005 mm. CNC milled features: +/-0.05 mm positional tolerance. Centreless grinding after turning: +/-0.002 mm with roundness within 0.001 mm TIR.

Is CW614N suitable for drinking water applications?

CW614N does not meet dezincification resistance or low-lead drinking water requirements in most jurisdictions (such as WRAS in the UK or NSF/ANSI 61 in the US). For potable water contact components we recommend DZR brass (CW602N) or a certified lead-free alloy.

What is your minimum order quantity for CW614N machined parts?

Prototype CNC parts from 50 pieces; production CNC turned/milled parts from 500 pieces; multi-spindle screw machine production from 10,000 pieces. No NRE charge applies for standard cylindrical parts; tooling charges apply for special form tools.

Do you provide material test certificates for CW614N components?

Yes. EN 10204 Type 3.1 material test certificates confirming CW614N chemical composition and mechanical properties are issued with every production batch, along with dimensional inspection reports and, where required, RoHS/REACH declarations.

What surface finishes and platings are available on CW614N parts?

Available finishes include as-machined, vibratory tumbled, barrel polished, passivated, tin plated, nickel plated (electroless per MIL-C-26074 or bright electrolytic), and silver plated for high-conductivity contact applications.

Equivalent Terms in Other Languages

Related Products and Linked Terms

• Brass CZ 121 Machined Components, Brass CZ 121 Turned Parts
• Brass C36000 Alloy Parts, Free Machining CDA 360 Brass Parts
• Brass Screw Machine Components
• Brass Milled Parts and VMC Machined Components
• Brass DZR Parts, Brass DZR Machined Components
• Lead Free Brass Components, Lead Free Brass Machining
• Brass Components Category

Request a Quote for CW614N Brass Machined Parts and CNC Machined Components

Submit your engineering drawings (DXF, STEP, PDF) specifying CW614N, CZ121, C36000 or IS 319 alloy, thread standards, quantity and finish requirements. Our technical team responds with a cross-referenced material quotation and compliance documentation within 24-48 hours.

Email: sales@brass-copper-parts.com | Phone/WhatsApp: +91-22-43449300

Brass and Copper Parts (India) – Plot 10-B, GIDC Industrial Estate, Shankar Tekri, Jamnagar 361004, Gujarat, India.