Multi-axis turning, turn-mill and rotary-transfer machining of brass, copper and aluminium — finished complete, held to tight tolerances, and made to order in Jamnagar, India.
Every component is turned, milled and finished on our own machines in Jamnagar — machining is never subcontracted. The mix of turning centres, multi-axis turn-mill centres and 8-station rotary-transfer machines lets us match the right process to your part — from low-volume prototypes to millions of pieces a year.
CW617N, CW614N, CW602N (DZR), CW724R (lead-free) and CW510L — from free-machining grades to dezincification-resistant and drinking-water alloys.
Alloy datasheets →C11000 (ETP) — high electrical and thermal conductivity for contacts, terminals and busbar hardware.
C11000 datasheet →6061 & 6063 — lightweight structural, enclosure and heat-dissipating parts where weight and corrosion resistance matter.
Aluminium & copper →Turn-mill centres with driven tooling, Y-axis and sub-spindle — backed by 8-station rotary-transfer machines — finish complex parts in one operation. Fewer setups mean tighter concentricity, lower cost and faster delivery.
We review your 2D/3D part and quote within 24 hours — in the right alloy, on the right machine.
Request a Quote →A sample of precision brass, copper and aluminium components produced on our CNC turning, turn-mill and rotary-transfer machines.
Leaded brass (CW617N, CW614N) machines faster than any other structural metal. Lead at 1.6–3.5% acts as an internal lubricant and chip breaker, enabling very high cutting speeds, excellent surface finish, and long tool life without coolant. This is why Jamnagar produces hundreds of millions of brass fittings per year.
| Alloy | Machinability | Vc (m/min) | Feed (mm/rev) | Rake Angle | Coolant | Chip Form |
|---|---|---|---|---|---|---|
| CW617N | 100% | 200 – 400 | 0.10 – 0.30 | 0° to +5° | Dry OK | Short, brittle chips |
| CW614N | 95% | 190 – 380 | 0.08 – 0.28 | 0° to +5° | Dry OK | Short, very fine chips |
| CW625N | 72% | 150 – 300 | 0.08 – 0.25 | +3° to +8° | Recommended | Moderate length chips |
| CW612N | 65% | 130 – 280 | 0.08 – 0.22 | +5° to +10° | Recommended | Moderate, longer chips |
| CW607N | 65% | 130 – 280 | 0.08 – 0.22 | +5° to +10° | Recommended | Moderate chips |
| CW602N | 62% | 120 – 250 | 0.08 – 0.20 | +5° to +10° | Recommended | Moderate chips |
| CW724R | 80% | 160 – 320 | 0.08 – 0.22 | +5° to +10° | Required | Moderate chips, some stringiness |
| C27450 | 55% | 110 – 230 | 0.06 – 0.18 | +8° to +12° | Required | Longer chips, chip breaker geometry |
| C11000 | ~20% | 80 – 180 | 0.05 – 0.12 | +10° to +15° | Flood required | Long, gummy, stringy chips |
Brass machining uses different tool geometry than steel or aluminium. Key considerations:
Coolant requirements vary significantly by alloy — one of the key hidden costs in switching from leaded to lead-free grades:
| Feature | Standard CNC | Precision CNC | Swiss Turn | Notes |
|---|---|---|---|---|
| Turned OD | ±0.05 mm (IT8) | ±0.02 mm (IT6) | ±0.005 mm (IT4) | Diameter up to 50mm standard; tighter with temperature control |
| Bored ID | ±0.05 mm | ±0.02 mm | ±0.008 mm | Fine boring head or CBN tool for tight IDs |
| Thread (external) | 6g class | 6g/6h class | 6h class | Brass threads cut cleanly; form tapping possible |
| Thread (internal) | 6H class | 6H class | 6H class | Single-point threading preferred for precision |
| Surface finish (Ra) | 1.6 – 3.2 μm | 0.8 – 1.6 μm | 0.4 – 0.8 μm | CW614N achieves finest finish due to highest Pb content |
| Hex / form milled | ±0.10 mm | ±0.05 mm | N/A (bar stock only) | Mill after turning; milling parameters similar to turning |
Pure copper (C11000) is notoriously difficult to machine — it's gummy, work-hardens, and produces long stringy chips that wrap around tooling. Machinability is only ~20% vs CW617N.
CW724R at 80% machinability produces longer, more stringy chips than leaded grades. Chip control is essential in automated machining cells.
Brass exhibits low springback and minimal thermal distortion — dimensional stability after machining is excellent. In-process gauging is straightforward and SPC control charts for Cpk >1.67 are routinely achieved on CNC brass lines.
Brassland's CNC capacity in Jamnagar handles runs from 1,000 to 5 million parts per year with EN 10204 3.1 material certification and full inspection records — most of it custom parts machined to your drawing.
Get a Quote Custom Parts →Speeds and feeds are only the starting point. Holding quality and cost across runs of 50,000+ parts is what production engineering really means — here is how we run the CNC floor.
Spindle-load monitoring flags a chipped or worn insert and stops the machine, backed by scheduled insert changes on tight-tolerance work — keeping long runs inside the ±0.01 mm band.
Low-rake insert geometry and 20–40 bar through-tool coolant clear brass chips cleanly; swarf is reclaimed at >99.5% and briquetted for recycling.
Production runs across day and night shifts, with quality engineers on the floor checking parts throughout every shift — so consistency holds around the clock.
Every run is logged in our MES — machine, operator, programme, tool and raw-material lot — and retained for 10 years, the basis of every PPAP and FAI pack for OEM customers.
Brassland runs 79+ CNC machines, including 28+ Swiss-type sliding-head lathes, at its Jamnagar facility, with production across day and night shifts and quality engineers on the floor every shift. The plant is ISO 9001, 14001 and 45001 certified and exports to 40+ countries.
Typical production tolerance on turned brass diameters is ±0.01 mm, with tighter bands achievable on specific features after first-article validation. Tolerance capability depends on the process and geometry — see the tolerances guide, and send your drawing for a feature-by-feature confirmation.
Free-machining and lead-free brasses (CW614N, CW617N, CW602N DZR, CW724R, C6802), pure copper (C11000) and aluminium alloys. Cutting parameters are adjusted per grade — roughly 20–30% slower for lead-free silicon brass and up to 70% slower for pure copper versus leaded brass.
Bar-fed CNC suits runs from a few thousand to millions of parts. Every run is logged in our MES — machine, operator, programme, tool and raw-material lot — retained for 10 years, supporting PPAP and FAI packs, with EN 10204 Type 3.1 mill certificates supplied as standard.
Process parameters, tolerances and tooling guidance on this page are drawn from the publishing bodies and tool manufacturers below. For production-critical specification, validate the parameters against your machine, tooling vendor and material supplier — the values shown are starting points typical of free-machining brass under standard CNC and forging conditions.
Last reviewed: May 2026. The parameters here are typical starting values for free-machining leaded brass (CW617N/CW614N reference); reduce cutting speed and feed by ~20–30% for lead-free silicon brass (CW724R/C6802) and by ~70% for pure copper (C11000). For close-tolerance or thin-wall geometries, validate via first-article inspection (FAI) before scale production.