CuZn36Pb2As
2.0372Dezincification-resistant (DZR) leaded brass with arsenic addition (0.02–0.15% As). Specifically developed for potable water applications where standard brasses suffer dezincification attack. Good machinability (70% of CW614N). Compliant with WRAS (UK), ACS (France), 4MS (EU) approvals for drinking water. Used for water meter bodies, valves, fittings and plumbing components. The As addition inhibits selective zinc leaching in aggressive water conditions.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | CW602N | — | REF |
Sources: EN 12164
Chemical composition comparison (wt%)
Side-by-side: CuZn36Pb2As (EN) (EN 12164) vs ASTM
| Element | CuZn36Pb2As (EN) | ASTM | Overlap |
|---|---|---|---|
| Cu | 61.5–63.5% | — | — |
| Al | ≤ 0.05% | — | — |
| Zn | — | — | — |
| Pb | 1.6–2.5% | — | — |
| As | 0.02–0.15% | — | — |
| Fe | ≤ 0.3% | — | — |
| Sn | ≤ 0.3% | — | — |
Mechanical properties
As Drawn R430
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ≥ 430 | MPa |
| Yield Strength Rp0.2 | ≥ 200 | MPa |
| Elongation A | ≥ 8 | % |
General
| Property | Value | Unit |
|---|---|---|
| Density | 8.45 | g/cm³ |
| Machinability Rating | 70 | % |
Related materials
CuZn37
2.0321Lead-free alpha/alpha+beta brass (63% Cu, 37% Zn). Compromise between cold formability (CuZn35) and hot formability (CuZn40). The most widely used unleaded brass. Used for cartridge cases, radiator cores, lamp components, plumbing fixtures, and decorative hardware.
CuZn36Pb3
CW603NFree-cutting leaded brass — the benchmark for non-ferrous machinability (rated 100%). Lead particles act as chip breakers for excellent surface finish. Used for screw machine parts, fittings, valves, watch components, precision mechanics, and electrical connectors. Old DIN number 2.0375.
CuSn6
CW452KPhosphor bronze with 6% tin — better cold formability than CuSn8 at slightly lower strength. Excellent spring properties and fatigue resistance. Used for electrical connectors, spring contacts, switch parts, bellows, bourdon tubes, and precision springs.
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