Weight %. Higher Cu / lower Zn reduces the alloy's susceptibility to dezincification — though it is not a certified DZR grade.
| Element | Symbol | Min % | Max % | Typical % |
|---|---|---|---|---|
| Copper | Cu | 62.0 | 64.0 | 63.0 |
| Zinc | Zn | Balance | ~35.5 | |
| Lead | Pb | 1.5 | 2.5 | 2.0 |
| Iron | Fe | — | 0.30 | 0.08 |
| Nickel | Ni | — | 0.30 | 0.05 |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Tensile Strength (Rm) | R360 | 370–480 | MPa |
| Proof Stress (Rp0.2) | R360 | ≥150 | MPa |
| Elongation (A) | R360 | ≥22 | % |
| Hardness | R360 typical | 90–115 | HB |
| Machinability | vs C36000 = 100 | ~65% | — |
| Density | — | 8.52 | g/cm³ |
| Thermal Conductivity | — | ~130 | W/(m·K) |
| Melting Range | solidus–liquidus | 905–935 | °C |
| Standard | Designation |
|---|---|
| EN (Europe) | CW607N / CuZn36Pb2 |
| ASTM (USA) | C34000 / C34500 (close) |
| BS (UK legacy) | CZ119 (close) |
| DIN (Germany) | CuZn36Pb2 |
| ISO | CuZn36Pb2 |
CW607N (CuZn36Pb2) is a low-zinc leaded brass per EN 12164 with around 65% machinability. Its lower zinc content gives better inherent dezincification resistance than CW617N, so it suits machined fittings in mildly aggressive water and general turned parts that need a balance of machinability and corrosion behaviour.
Yes, under RoHS Annex III Exemption 6(c) (lead up to 4% in copper alloys), currently valid to 30 June 2027. For mandatory lead-free applications specify CW724R or C6802 instead.
CW602N adds arsenic and is the formally DZR-qualified grade (ISO 6509-1) for aggressive potable water. CW607N has better-than-CW617N corrosion behaviour from its lower zinc but is not an arsenical DZR grade. If the drawing or water authority demands certified DZR, use CW602N.
The nearest equivalents are C34500/C35300 leaded brasses (US, ASTM) and former UK designation CZ119. Composition is specified in EN 12164; Brassland supplies EN 10204 Type 3.1 mill certificates with every lot.
Balanced machinability and corrosion behaviour, to your drawing. ISO 9001:2015. Quote within 24 hours.
Request a QuoteComposition ranges, mechanical properties, machinability ratings and regulatory data on this page are cross-referenced against the publishers below. Tolerances and minimum values are taken from the relevant published standard at the time of writing — for procurement specification, always reference the current published edition.
Last reviewed: June 2026. EN/ISO/ASTM standards are updated periodically. This datasheet reflects the editions listed; for safety-critical or contract-critical applications, always verify against the current published edition of the standard. For project-specific deviations or supplier-specific composition windows, request a Type 3.1 mill certificate (EN 10204) with your order.