Brass CNC Machined Parts from Hot Forging – Manufacturer & Exporter India
Cable Glands India manufactures Brass CNC Machined Parts from Hot Forging, combining the grain-flow integrity of hot forging with the precision of CNC machining to produce high-tolerance brass components for electrical, instrumentation, plumbing, and industrial applications. Our brass hot forged blanks are CNC-machined to exact customer specifications in CW614N (CZ121), CW617N, C36000, C37700, and lead-free brass alloys, serving electrical OEMs, EPC contractors, cable gland manufacturers, valve producers, and industrial distributors worldwide.
Indicative Price: US$ 17.90/kilogram (ex-works Jamnagar, India; subject to alloy, complexity, and quantity)
Product Overview
Brass Hot Forging Process and Blanks
Hot forging of brass (typically at 650–800°C) produces near-net-shape blanks with superior grain flow and mechanical properties compared to bar-turned parts. The hot forging process eliminates internal porosity, segregation, and material waste associated with machining from solid bar stock. Brass hot forged blanks are produced for CNC machining into brass cable gland bodies, brass valve bodies, brass compression fittings, brass instrumentation bodies, brass manifold blocks, brass electrical connectors, brass hydraulic fittings, brass coupling bodies, and brass push-fit fitting bodies. Forging weight ranges from 10g to 2,000g per piece.
CNC Machining of Brass Forged Parts
After hot forging, blanks are precision CNC machined on multi-axis turning and machining centres (CNC lathes, turn-mill centres, 3-axis and 5-axis VMCs) to achieve final dimensional tolerances of ±0.01–0.05 mm. CNC machined features include precision threads (UNC, UNF, NPT, BSP, metric), hex flats, sealing tapers, O-ring grooves, counterbores, undercuts, and complex internal profiles. CNC brass forged parts include brass CNC cable gland bodies, brass CNC compression fitting bodies, brass CNC valve spindles, brass CNC terminal blocks, brass CNC manifold bodies, brass CNC hydraulic adapters, brass CNC push-pull connectors, and brass CNC instrumentation housings.
Brass CNC Machined Electrical Components
Brass hot forged and CNC machined electrical components include brass cable gland bodies (metric, PG, NPT, BSP thread), brass cable gland locknuts, brass EMC (electromagnetic compatibility) cable glands, brass explosion-proof gland bodies, brass conduit fittings (locknut type, compression type), brass terminal connectors, brass earthing nuts, brass cable entry plates, brass MCB terminal screws, brass MCB connection bars, brass distribution board lugs, brass busbar connectors, and brass earthing clamp bodies. All manufactured to IEC 60309, BS 6121, DIN 89280, and NEMA standards.
Brass CNC Machined Plumbing and Hydraulic Fittings
For the plumbing, HVAC, and hydraulic sectors, we produce brass hot forged CNC machined components including brass compression fittings (UK, European, US styles), brass push-fit fittings, brass press fittings, brass ball valve bodies, brass gate valve bodies, brass check valve bodies, brass butterfly valve discs, brass pressure relief valve bodies, brass needle valve bodies, brass angle valves, brass straight couplings, brass equal tees, brass reducing bushes, brass hex nipples, and brass union bodies. Standards: BS EN 1254, ASTM B16.18, ASTM B16.22, ISO 228, ISO 7-1 (BSP/NPT threads).
Brass CNC Machined Instrumentation Components
Precision brass hot forged and CNC machined instrumentation components include brass tube fittings (single and double ferrule, Swagelok-type), brass push-to-connect fittings, brass manifold bodies, brass valve bodies for instrumentation, brass gauge connections, brass pressure transducer bodies, brass flow meter bodies, brass actuator housings, brass solenoid valve bodies, brass pneumatic fitting bodies, and brass cylinder connectors. Tolerances to ±0.01 mm; surface finish to Ra 0.4 µm on sealing faces; threads per DIN 2353, BS 5200, Parker Hannifin, and Swagelok standards.
Brass CNC Machined Automotive Components
Automotive-grade brass hot forged and CNC machined parts include brass fuel system connectors, brass CNG/LPG fitting bodies, brass brake line connectors, brass air fitting bodies, brass coolant fitting connectors, brass sensor housings, brass switch bodies, brass valve stems, brass fuel injector components, and brass engine fitting connectors. Compliance with ASTM B36, SAE J1130, and automotive OEM specifications. Lead-free brass (CW511L / C69300 Eco Brass) variants available for potable water and food-contact applications.
Custom Brass CNC Forged Parts
Cable Glands India offers full custom manufacturing of brass hot forged and CNC machined components from customer-supplied drawings (2D DXF/DWG or 3D CAD STEP/IGES) or physical samples. Our DFM (Design for Manufacturability) team reviews all designs to optimise die geometry, reduce flash, minimise CNC cycle time, and improve surface finish. Prototype quantities from 100 pieces; production quantities from 500 kg. Custom packaging, plating (nickel, chrome, tin), and marking (laser engraving, ink jet) available.
Lead-Free Brass CNC Forged Parts
In response to RoHS, REACH, California Prop 65, and NSF/ANSI 61/372 requirements, we manufacture lead-free brass CNC forged parts in CW511L (C69300 Eco Brass), CW724R, DZR (dezincification-resistant) CZ132 brass, and silicon brass alloys. Lead-free brass CNC forged components for potable water fittings, medical gas components, food-grade valves, and EU REACH-compliant electrical components. Full compliance documentation provided.
Key Features
- Combined advantages of hot forging (grain flow, strength) and CNC machining (precision, surface finish)
- Material savings of 15–40% vs. machining from solid bar for complex geometries
- CNC tolerances to ±0.01–0.05 mm on finished dimensions
- Multiple brass alloys: CW614N, CW617N, C36000, lead-free, DZR, free-cutting
- Thread forms: BSP, NPT, UNC, UNF, metric, PG, DIN 89280
- Surface finishes: natural, nickel-plated, chrome-plated, tin-plated
- Full material traceability with mill test certificates
- RoHS, REACH, NSF-61 compliant grades available
Mechanical Advantages of Hot Forging + CNC Machining
The forging process aligns the brass grain structure to the component geometry, resulting in tensile strengths 10–20% higher than equivalent machined-from-bar parts. Hot forging eliminates internal porosity and gas inclusions common in cast parts. When combined with precision CNC machining, brass forged parts achieve a superior combination of structural integrity, dimensional accuracy, and surface quality. Forged brass cable gland bodies, for example, withstand higher torque during installation without cracking compared to cast brass equivalents.
Cost Efficiency
For medium to high-volume production (typically above 5,000 pieces per run), brass hot forging combined with CNC machining delivers significant cost advantages over solid bar turning: raw material savings of 15–40% through near-net-shape forging, reduced CNC cycle time due to less material removal, improved tool life due to consistent material hardness, and reduced scrap rates. Total cost of manufacturing (TCM) advantages of 20–35% are typical for components above 50g in weight.
Thread and Dimensional Precision
CNC machined threads on brass hot forged parts are produced to ISO 228-1 (BSP), ANSI B1.20.1 (NPT), DIN 13 (metric), BS 93 (PG conduit threads), and DIN 89280 (cable gland metric threads) standards. Thread form, pitch, and tolerance class are verified 100% using go/no-go gauges calibrated to NABL standards. Sealing taper angles on compression fittings and cable glands are verified using taper gauges and CMM. Thread pull-out strengths meet or exceed relevant IEC and BS standards.
Plating and Surface Treatment
Brass CNC forged parts can be supplied with nickel plating (electrolytic, 5–25 µm per EN ISO 4526), chrome plating (6+25 µm per EN ISO 6158), tin plating (5–15 µm per IEC 60068-2-58), zinc-nickel plating, and clear lacquer coating. Nickel-plated brass is standard for cable glands used in marine and chemical environments. Chrome-plated brass is used for decorative plumbing fittings. Tin-plated brass provides improved solderability for electrical terminals.
Quality Control and Inspection
All brass CNC forged parts undergo first-article inspection (FAI) with dimensional reports, thread gauge verification, visual examination, and hardness testing. In-process CMM inspection at critical stages. Final inspection includes 100% thread gauging, visual inspection under illuminated magnifier, and dimensional sampling per AQL 1.0 or tighter per customer specification. Pressure testing of valve bodies and fittings per BS EN 19 or equivalent. PPAP documentation available for automotive customers.
Technical Specifications
| Parameter | Specification |
|---|---|
| Forging Process | Closed-die hot forging (650–800°C) |
| CNC Machining | Multi-axis CNC turning, milling, turn-mill centres |
| Part Weight Range | 5g to 2,000g per piece |
| Dimensional Tolerance | ±0.01–0.05 mm (CNC machined) |
| Surface Finish (machined) | Ra 0.4–3.2 µm |
| Thread Standards | BSP (ISO 228), NPT (ANSI B1.20.1), Metric (DIN 13), PG (DIN 89280), UNC/UNF |
| Hardness (CW614N) | 80–95 HB |
| Tensile Strength (CW614N) | ≥ 400 MPa |
| Elongation (CW614N) | ≥ 15% |
| Pressure Test | Up to 100 bar (valve bodies and fittings) |
| Plating Options | Nickel (5–25 µm), Chrome, Tin (5–15 µm), Zinc-Nickel |
| Min Order Qty | 100 pcs (prototypes); 500 kg (production) |
Brass Alloy Grades and International Equivalents
| Grade | UNS | EN (Europe) | DIN | BS (UK) | IS (India) | Application |
|---|---|---|---|---|---|---|
| CW614N | C38500 | CW614N | CuZn39Pb3 | CZ121 | LTB2 | General forging, cable glands, fittings |
| CW617N | C37700 | CW617N | CuZn40Pb2 | CZ122 | – | Forgings, valves, connectors |
| C36000 | C36000 | CW603N | CuZn36Pb3 | CZ121 | – | CNC machining, screw machine parts |
| C37700 | C37700 | CW617N | CuZn40Pb2 | CZ122 | – | Hot forgings, plumbing fittings |
| CW511L (Eco Brass) | C69300 | CW511L | CuZn21Si3P | – | – | Lead-free, potable water, NSF-61 |
| CZ132 (DZR) | C35330 | CW602N | CuZn36Pb2As | CZ132 | – | Dezincification-resistant, water service |
Product Types and Variants
- Brass CNC Machined Cable Gland Bodies (metric, PG, NPT, BSP)
- Brass CNC Compression Fitting Bodies (UK, EU, US types)
- Brass CNC Ball Valve Bodies and Stems
- Brass CNC Instrumentation Tube Fitting Bodies
- Brass CNC Manifold Blocks
- Brass CNC Hydraulic Adapter Bodies
- Brass CNC Terminal Block Bodies
- Brass CNC Conduit Fittings (Type A, Type B)
- Brass CNC Automotive Fuel System Components
- Brass CNC Custom Components (per drawing)
Applications by Industry
- Electrical & EPC: Cable gland bodies, conduit fittings, terminal connectors, earthing components, distribution board hardware
- Plumbing & HVAC: Compression fittings, ball valve bodies, push-fit fittings, press fittings, pipe couplings
- Oil & Gas: Instrumentation tube fittings, manifold bodies, hydraulic adapters, pressure gauge connections
- Automotive: Fuel connectors, CNG/LPG fittings, brake line connectors, sensor housings
- Water Treatment: Valve bodies, flow meter bodies, pressure vessel connectors, filter housings
- Instrumentation: Ferrule-type fittings, solenoid valve bodies, pneumatic connectors, transducer housings
- Marine & Offshore: Nickel-plated cable glands, waterproof connectors, seawater-resistant fittings
- ATEX/Hazardous Area: Flame-proof cable gland bodies, explosion-proof conduit fittings
Manufacturing Process
The production of brass CNC machined parts from hot forging follows an integrated process: (1) Brass billet/rod cut to precise weight per part. (2) Induction heating to 650–800°C. (3) Closed-die hot forging on 150–2,000 tonne presses. (4) Trimming of flash and shot-blasting. (5) Dimensional check of forgings. (6) CNC machining: turning on CNC lathes (multi-spindle, sub-spindle, bar-fed), milling on VMC/HMC, thread cutting, boring, drilling. (7) Deburring, washing, drying. (8) Plating/surface treatment (if required). (9) First-article inspection (FAI), 100% thread gauging, dimensional CMM check, hardness testing. (10) Packaging and dispatch with full MTCs.
Quality Standards and Certifications
- ISO 9001:2015 Quality Management System
- ASTM B124 / B283 (Copper Alloy Forgings)
- EN 12164 / EN 12168 (Brass rods and bars for forging)
- BS EN 12420 (Copper alloy forgings)
- IEC 62444 / BS 6121 (Cable gland bodies)
- EN ISO 4527 (Nickel plating)
- NSF/ANSI 61 / 372 (Lead-free grades)
- RoHS Directive 2011/65/EU
- REACH Regulation (EC) No. 1907/2006
- NABL-accredited third-party testing
Why Choose Cable Glands India?
- Integrated Forging + CNC Facility: In-house hot forging, CNC machining, plating, inspection – single-source supply
- Alloy Flexibility: CW614N, CW617N, C36000, lead-free Eco Brass, DZR brass from stock
- Export Expertise: Direct supply to USA, UK, Germany, France, Australia, UAE, and 40+ countries
- Competitive Pricing: US$ 17.90/kg indicative; volume discounts from 500 kg
- Fast Lead Times: 3–5 weeks for standard parts; 6–8 weeks for new tooling
- Technical Support: DFM review, material selection guidance, prototyping assistance
Frequently Asked Questions
What is the difference between brass hot forged parts and brass CNC bar-turned parts?
Hot forged brass blanks have superior grain flow aligned to the component shape, providing 10–20% higher strength, better fatigue resistance, and elimination of internal porosity compared to machined-from-bar parts. For high-stress components (cable gland bodies under installation torque, valve bodies under pressure), forged blanks are preferred. Bar-turned parts offer lower tooling cost for low volumes and simpler geometries.
What brass alloy do you recommend for cable gland bodies?
CW614N (CZ121 / C38500) is the standard alloy for brass cable gland bodies – excellent machinability (100% machinability rating), hot forgeability, and corrosion resistance in standard industrial environments. For marine or corrosive environments, nickel-plated CW617N or DZR CZ132 brass are preferred.
Can you supply lead-free brass CNC forged parts?
Yes. We supply lead-free brass CNC forged parts in CW511L (C69300 Eco Brass) and CZ132 DZR brass for potable water, plumbing, and EU REACH/RoHS-compliant applications. NSF/ANSI 61 and 372 compliance documentation available.
What thread types can you machine on brass forged parts?
We machine all standard thread forms: BSP (parallel and taper, ISO 228/BS 21), NPT (ANSI B1.20.1), metric (DIN 13), PG conduit threads (DIN 89280), UNC/UNF, Whitworth, and customer-specific proprietary threads. All threads are gauged 100% with calibrated go/no-go gauges.
What is the typical lead time for brass CNC forged parts?
For standard products with existing tooling: 3–5 weeks from order confirmation. For new components requiring forging die design and manufacture: 6–8 weeks. Expedited production available for urgent requirements.
What plating options are available for brass CNC forged parts?
Standard options: bright nickel plating (5–25 µm), decorative chrome (6+25 µm), matte tin plating (5–15 µm), zinc-nickel plating, and clear lacquer. Custom finishes including PVD, black nickel, and phosphate available on request. All plating certified per relevant EN ISO standards.
What is your minimum order quantity?
Prototype orders: minimum 100 pieces (new tooling charge applies). Standard production: minimum 500 kg. Long-term blanket orders with scheduled call-offs are available for OEM customers.
Do you supply PPAP documentation for automotive customers?
Yes. We provide full PPAP (Production Part Approval Process) documentation including dimensional results, material test certificates, process capability studies (Cpk), control plans, and FMEA reports for automotive OEM and Tier-1 customers.
Can you match an existing part from a sample?
Yes. We reverse-engineer parts from physical samples using 3D scanning (CMM or optical scanner), create a 3D CAD model, develop forging die design and CNC machining programs, and produce prototypes for approval before production. Full dimensional report vs. original sample provided.
What pressure can brass CNC forged valve bodies withstand?
Brass forged valve bodies are typically rated to 16–50 bar working pressure for standard applications (BS EN 12288, BS 5154). High-pressure hydraulic and instrumentation components can be rated up to 690 bar (10,000 PSI) with appropriate wall thickness and material grade. All pressure ratings are verified by hydrostatic pressure testing.
Multilingual Equivalent Terms
Spanish: Piezas de Latón Mecanizadas CNC por Forja en Caliente, Componentes de Latón Forjado, Piezas de Latón CNC
Russian: Латунные детали с ЧПУ из горячей штамповки, Кованые латунные детали, Латунные фрезерованные компоненты
French: Pièces Laiton Usinées CNC par Forgeage à Chaud, Composants Laiton Forgé CNC, Pièces Laiton Forgé
Portuguese: Peças de Latão Usinadas CNC por Forjamento a Quente, Componentes de Latão Forjado, Peças CNC Latão
Italian: Parti in Ottone Lavorate CNC da Forgiatura a Caldo, Componenti in Ottone Forgiato CNC, Pezzi in Ottone CNC
Related Products
Copper Forging & Copper Forged Parts | Forging and Hot Stamping | Brass Cable Glands | Brass Compression Fittings | Brass Ball Valve Bodies | CW614N Brass Machined Parts | C36000 Brass Parts | Lead-Free Brass Components | Brass Terminal Blocks | Brass Conduit Fittings
Get a Quote
Contact Cable Glands India for competitive pricing on brass CNC machined parts from hot forging. Indicative price: US$ 17.90/kilogram (ex-works Jamnagar). Send drawings, specifications, or samples to sales@cableglandsindia.com or call +91 22 4344 9300. We respond within 24 hours.