CW614N Brass Components and Parts

CW614N Brass Components and Parts

CW614N brass components and parts — also identified as EN 12164 CW614N machined parts, CuZn39Pb3 turned components, free-cutting brass components to European standard, CW614N precision parts, or high-machinability brass parts — are precision-machined components manufactured from CW614N (CuZn39Pb3) brass rod and bar in accordance with European standard EN 12164. CW614N is the dominant free-cutting brass alloy in European, UK, and global industrial applications, with a machinability index of 100 and broad adoption across electrical equipment, plumbing, instrumentation, automotive, and gas system manufacturing. Electrical Accessories India manufactures CW614N components using CNC turning centres, multi-spindle automatics, and Swiss-type lathes for OEM customers across India, Europe, the UK, the UAE, and 30+ export markets.

Product Overview

CW614N Alloy Specification

CW614N (CuZn39Pb3) per EN 12164 contains: copper 57–59%, zinc 37–42% (balance), and lead 2.5–3.5%. The lead is present as discrete particles throughout the matrix — acting as chip-breakers that produce short, free-breaking chips at high cutting speeds. This gives CW614N its machinability index of 100 — the benchmark against which all other metals and alloys are measured. The alloy also provides: good corrosion resistance in atmospheric and fresh-water environments, adequate mechanical strength (UTS 380–490 MPa), good electrical conductivity (approximately 26–28% IACS), and good solderability and brazability. It is not recommended for applications with dezincification risk (chlorinated water, soil) — CW602N (DZR brass) should be used instead.

EN 12164 Standard and CW614N Rod Forms

EN 12164 “Copper and copper alloys — Rod for free machining purposes” covers CW614N and other copper alloy grades supplied as drawn or extruded rod in diameters 3–180 mm. The standard specifies chemical composition, mechanical properties (tensile strength, hardness), dimensional tolerances, and test methods. CW614N rod is produced in four temper conditions: R360 (soft drawn, 360 MPa min UTS), R400 (medium drawn), R430 (hard drawn), and R490 (extra hard drawn). The higher tempers provide increased strength and hardness at the cost of some ductility — R400 and R430 are most common for machined parts. Electrical Accessories India uses EN 12164 certified CW614N rod from Indian primary producers with full 3.1 MTRs.

CW614N Component Types

Electrical Accessories India produces the full range of CW614N components required by electrical, plumbing, and industrial OEMs. Cable gland bodies, locknuts, and shrouds machined from CW614N hex bar are the primary product for electrical OEM customers. CW614N terminal pins, contact fingers, and connector bodies are produced for switchgear, panel board, and industrial connector manufacturers. CW614N compression fitting bodies (body, nut, front/back ferrule) are produced for instrumentation and process control supply. CW614N threaded inserts, hex spacers, and standoffs serve PCB, panel, and structural assembly requirements. CW614N valve stems, actuator bodies, and flow control components are produced for process and HVAC applications.

Machining Process for CW614N

CW614N is machined on CNC turning centres (for complex profiles and small-to-medium batches), multi-spindle automatic screw machines (for high-volume simple-to-moderate complexity parts), and Swiss-type CNC lathes (for high-precision slender parts). All processes take advantage of CW614N’s outstanding machinability: cutting speeds 200–350 m/min, feeds 0.05–0.5 mm/rev, depth of cut 0.1–5 mm. Coolant (water-soluble cutting oil) is used to prevent thermal expansion and maintain dimensional consistency. Secondary operations — tapping, cross-drilling, milling of flats, knurling, slotting — are performed in-line on live-tool lathes or as dedicated secondary operations on VMCs.

Quality Documentation for CW614N Parts

Full quality documentation is provided with every CW614N batch. Raw material: EN 10204 3.1 Mill Test Certificate from CW614N rod producer. Production: ISO 9001-compliant process records with machine ID, operator, tool batch, and inspection results. Inspection: First-Article Inspection Report (FAIR) for new parts; AQL inspection report for production batches; CMM dimensional reports for critical features; thread gauge records (100% gauging). Shipping: CoC (Certificate of Conformance), RoHS Annex II declaration, REACH SVHC declaration, certificate of origin (DGFT/FIEO), and packing list. EN 10204 3.1 or 2.2 certification available per customer requirement.

Surface Finishing and Plating Options

CW614N parts can be supplied in as-machined (natural brass) finish, or with protective/decorative surface treatments. Bright nickel plating (3–8 µm, ASTM B689) is the most common plating for electrical components — improving corrosion resistance and providing a uniform appearance. Electroless nickel plating (5–25 µm, ASTM B733) provides uniform coverage including recesses and threads. Tin plating (5–15 µm electrolytic, ASTM B545) is specified for electrical terminals to improve contact resistance and solderability. Bright chrome plating for decorative applications. Passivation (citric acid) to enhance natural oxide layer. All plating by certified partner plating shops with documented process controls.

Key Features

• Grade: CW614N per EN 12164 — equivalent to CZ121 (BS), IS 319 Type 1, C36000 (ASTM)
• Machinability index 100 — fastest and most cost-efficient brass alloy for machining
• Tensile strength 380–490 MPa; electrical conductivity ~27% IACS
• Full EN 10204 3.1 MTRs available from CW614N rod mill
• Dimensional tolerances ±0.01 mm; thread tolerances 6g/6H per ISO 965
• Component range: M3–M64 threads; 2–150 mm OD; up to 500 mm length
• CNC turning, multi-spindle automatic, Swiss-type lathes for any volume
• Surface treatment: nickel plating, tin plating, chrome, electroless nickel, passivation
• ISO 9001:2015 certified; full batch traceability and quality records
• Export documentation: CE marking support, UKCA declarations, RoHS, REACH

Material Grades and International Equivalents

Technical Specifications

Product Types and Variants

CW614N components from Electrical Accessories India cover: Cable gland bodies and accessories — metric and NPT, armoured and unarmoured, to BS EN 62444; CW614N connector bodies for industrial and circular connectors; Electrical terminal studs and threaded pins for switchgear; CW614N compression fittings for instrumentation and process systems; Hex threaded inserts for moulded housings; PCB standoffs, spacers, and pillars; Valve stems and spindles; Custom CW614N turned components to customer drawing for any OEM application worldwide.

Applications in Industry

CW614N brass components serve critical roles in: Electrical equipment manufacturing — cable glands, terminals, connectors, and panel fittings in switchgear and distribution systems; Instrumentation — compression fitting bodies, thermowell adapters, and manifold components for process control; Plumbing and gas — valve bodies, compression fitting bodies, and meter components per EN 1254; Automotive — fuel system fittings, pneumatic connectors, and sensor housings; Marine and offshore — non-critical marine fittings and electrical hardware where dezincification is not a concern; HVAC — valve stems, actuator bodies, and flow control fittings.

Manufacturing Process

1. Material Procurement: CW614N bar sourced with EN 10204 3.1 MTR; incoming inspection verifies OD, chemical (XRF), and hardness.
2. CNC Programming / Cam Setup: Program developed from customer 2D/3D drawing; DFM review completed.
3. First Article: Trial component machined; all dimensions verified against drawing; FAI report issued.
4. Production Run: Automatic barfeed production; SPC on critical dimensions.
5. Secondary Ops: Threading, cross-drilling, milling performed in-line or on VMC.
6. Deburring: Vibratory or hand deburring; chamfers applied.
7. Surface Treatment: Plating, polishing, or passivation per specification.
8. Final QC: AQL inspection; thread gauging; surface finish measurement; CMM if required.
9. Export Documentation: MTR, CoC, RoHS/REACH declarations, COO, packing list prepared.
10. Dispatch: Moisture-barrier export packing; courier or freight as agreed.

Quality Standards and Certifications

CW614N parts manufactured per: ISO 9001:2015; EN 12164 (CW614N free-cutting brass rod); EN 10204 (3.1 MTRs); IS 319 (Indian equivalent); ASTM B16 (C36000); ISO 965 (thread tolerances); ISO 286 (dimensional tolerances); RoHS 2011/65/EU Annex II 6(c) exemption; REACH SVHC compliance. CE marking support for EN 62444 cable glands. UKCA marking documentation available for UK market.

Why Choose Electrical Accessories India

Electrical Accessories India combines over 30 years of CW614N machining expertise with the cost advantage of Jamnagar’s integrated brass manufacturing cluster. We supply CW614N components with full EN standard documentation to European and UK OEMs who require the assurance of EN 12164 material compliance. Our export compliance team handles CE/UKCA documentation, RoHS/REACH declarations, and customs clearance in buyer countries. Technical engineering support for new part development, DFM review, and first-article qualification is provided free of charge. We are a single-source supplier for complete families of brass, copper, and bronze machined, forged, and cast components.

Frequently Asked Questions (FAQ)

What is CW614N brass?

CW614N is the EN 12164 European designation for free-cutting brass rod containing approximately 57–59% copper, 38–40% zinc, and 2.5–3.5% lead. It is the world’s most widely used free-cutting brass alloy and the reference standard (machinability index 100) against which all other metals are benchmarked for machinability.

What is the difference between CW614N and CW617N?

CW614N (CuZn39Pb3) is optimised for machining — it has the highest lead content (3%) for maximum chip breakage and machinability. CW617N (CuZn40Pb2) has slightly higher zinc and lower lead — it is better for hot-forging and extrusion of complex profiles but marginally inferior in pure machinability. For turned parts, CW614N is preferred; for forged parts, CW617N is common.

Can CW614N be used for potable water applications?

In EU countries subject to the 4MS/WRAS potable water approval system, CW614N with high lead content may not comply with KTW/WRAS requirements for prolonged water contact. CW602N (DZR, low-lead) is the approved grade for potable water fittings in those markets. CW614N is acceptable for industrial water applications not involving potable water or human contact.

What EN standard governs CW614N bar?

EN 12164:2016 “Copper and copper alloys — Rod for free machining purposes” governs CW614N rod. EN 12165:2016 covers wrought products for general purposes. EN 12420:2015 covers forgings. The relevant standard depends on the product form.

Do you supply CW614N with 3.1 test certificates?

Yes. EN 10204 3.1 certificates from the rod mill are available on request. 3.1 certificates are issued by the producer’s own inspection department and include chemical analysis and mechanical test results for the specific heat/cast supplied. 2.2 certificates (general conformance to order) are standard; 3.1 at additional cost for the MTR.

What is the minimum CW614N part quantity?

MOQ for CW614N turned parts: 1,000–5,000 pieces for standard components; 500 pieces for complex multi-operation parts. Annual blanket orders with monthly call-offs available. Prototype samples: 10–50 pieces at sample pricing with 1–2 week lead time.

Can you supply CW614N parts with CE marking?

CE marking is a product-level compliance declaration, not a material certification. For CW614N cable glands manufactured to EN 62444 and EN 60079-0 (ATEX), Electrical Accessories India can supply CE-marked cable glands. For raw machined components, we supply the material and dimensional documentation that supports the CE marking process at the OEM product level.

Equivalent Terms – Multilingual Reference

Related Products and Linked Terms

• Brass Parts – Brass CNC Machined Parts
• CZ121 Brass Turned Parts
• CuZn39Pb3 Brass Parts and Components
• Brass Turned Parts – Brass Turned Components
• Brass Screw Machine Parts
• Brass Forging Parts – Brass Forged Components

Request a Quote

Supply your drawing, sample, or specification and receive a detailed technical and commercial proposal within 24 hours. Electrical Accessories India engineers are available to advise on CW614N alloy applications, machining, tolerances, surface treatment, and certification for your OEM or distribution requirements. We export to 30+ countries with full shipping documentation.

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