Instrumentation fittings, pneumatic connectors, valve components, and compressed air systems — alloy selection for the broadest range of industrial applications.
Industrial and pneumatic applications represent the largest and most diverse category for brass fittings. Unlike potable water (strict lead limits) or EEE (RoHS), industrial brass is governed primarily by pressure and media compatibility requirements — with lead regulations applying only at the end-of-life recycling stage.
This gives greater alloy flexibility: CW617N at 100% machinability remains the workhorse for instrumentation and pneumatic fittings where RoHS does not apply. The priority is cost-per-part through maximum machining throughput.
| Component | Recommended Alloy | Reason |
|---|---|---|
| Push-in pneumatic connector body | CW617N | 100% machinability for million-unit runs; tight tolerance bores |
| Hydraulic compression fitting | CW617N | Standard grade; pressure-rated per DIN EN 1254 |
| Instrumentation tube fitting | CW617N / CW614N | CW614N for superior surface finish on sealing faces |
| Solenoid valve body | CW617N | Complex internal porting — maximum machinability essential |
| Flow control body | CW625N | Higher Cu for better corrosion resistance; cold-workable |
| Marine hardware | CuZn40 | Architectural grade for exposed fittings; lead-free |
| Industrial water valve (DZR req.) | CW602N | DZR-certified; non-potable water circuits |
| Cooling tower fitting | CW602N / CW724R | DZR for aggressive recirculation water; CW724R for lead-free |
| Gas meter fitting | C27450 | Low Pb (≤0.09%), RoHS-free, adequate machinability (55%) |
| Structural bracket / extrusion | CuZn40 / CW510L | High-Zn for hot-extruded structural profiles; lead-free |
Push-in pneumatic fittings, manifold blocks, solenoid valve bodies, and compressed air connectors are the highest-volume brass CNC segment globally. CW617N's 100% machinability is the single most important selection factor.
Instrumentation fittings (Swagelok-type, compression tube fittings, bite-type) require exceptional surface finish on sealing surfaces. CW614N (95% machinability, highest Pb at 2.5–3.5%) achieves the finest surface finish of all leaded brasses.
CW607N (CuZn36Pb2) has ~36% Zn — below the threshold where dezincification becomes a serious risk in most water conditions. For industrial water circuits where a formal DZR rating is not required but better DZ resistance is wanted, CW607N is a practical choice.
Brassland specialises in pneumatic and instrumentation fittings at scale — from prototypes to 5-million-unit annual programs, with EN 10204 3.1 material traceability on every order.
Discuss Your Program CW617N DatasheetThis guide covers alloy selection. To have components machined to your drawing, see the matching manufacturing pages:
Composition 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: May 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.