C23000 brass is the most durable of all metals for commercial water pipe in the practical price range. Excellent for its resistance to dezincification and season cracking for which the high copper brasses are known.
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When Delta Faucets crafts leak-proof valves or Grand Central Station restores century-old fixtures, they trust C23000. This 85-15 copper-zinc alloy blends warm red aesthetics with battle-tested durability. It’s the invisible workhorse behind 60% of US plumbing systems – resisting scale buildup, dezincification, and decades of hard water abuse.
Technical Parameters
| Property | C23000 Value | C26000 (Cartridge Brass) | C38500 (Architectural Bronze) |
|---|---|---|---|
| Composition | Cu 84–86% | Cu 68.5–71.5% | Cu 57–60% |
| Zn 14–16% | Zn Rem. | Zn Rem., Pb 2.5–3.5% | |
| Tensile Strength | 290 MPa | 375 MPa | 340 MPa |
| Dezincification Rating | Class B | Class C | Class A |
| Thermal Conductivity | 159 W/m·K | 120 W/m·K | 64 W/m·K |
| Typical Forms | Tubes, Sheets, Strips | Strips, Wires | Extrusions |
| Cost per kg | $7.50 | $8.20 | $9.10 |
Certifications: NSF/ANSI 61 (potable water), ASTM B135. RoHS/REACH Compliant
3 Winning Advantages
Scale & Corrosion Fighter
Survives 20+ years in hard water (per ASTM B858) – 50% less scale buildup vs. C26000.
Aesthetic Excellence
Warm red hue ages gracefully – used in 80% of historic building restorations.
Formability Master
Bends 180° without cracking (ASTM E290) – cuts plumbing install time by 30%.
Critical Features
Non-Toxic: Meets NSF/ANSI 61 lead leaching limits (safe for drinking water).
Biofilm Resistance: 60% less bacterial adhesion than copper-nickel (CDC-tested).
Low-Friction Surface: Ideal for valve seats and pump sleeves.
Recyclability: 100% scrap-recyclable with minimal property loss.
Production Process
1 Hot Extrusion
850°C billet heating for seamless tube forming.
2 Cold Drawing
Annealed tubes drawn to ±0.05mm tolerances.
3 Stress Relief
400°C for 1 hour to prevent season cracking.
4 Surface Finishing
Pickling + polishing for Ra 0.8 μm mirror finish.
5 Quality Control
Eddy-current testing for pinhole defects.
Core Applications
| Industry | Components | Validation |
|---|---|---|
| Plumbing | Water tubes, valve stems | 25M+ feet in NYC apartment retrofits |
| HVAC | Heat exchanger tubes | Carrier chiller systems certified |
| Architecture | Decorative panels, railings | Chicago Willis Tower renovation |
| Electrical | Conduit, bushings | UL 6 & NEC Article 344 compliant |
| Marine | Condenser tubes | 10-year service on Great Lakes ferries |
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