Technical chemical compatibility and galvanic corrosion chart for brass components in contact with water, oils, fuels, refrigerants, acids, and dissimilar metals.
| Chemical Fluid / Medium | Compatibility Rating | Temperature Limit | Engineering Notes & Recommendations |
|---|---|---|---|
| Potable Water & Domestic Supply | Excellent (A) | Up to 90°C | Use DZR Lead-Free Brass (CW708R / C69300) to prevent dezincification. |
| Hydraulic Oils & Petroleum Fuels | Excellent (A) | Up to 150°C | No degradation. Ideal for brass compression fittings & hose barbs. |
| Natural Gas & Propane (LPG) | Excellent (A) | Up to 120°C | Standard CW614N / C36000 with NPT thread tape or NPTF dryseal. |
| Ammonia & Ammonium Compounds | Unsatisfactory (D) | Any Temp | CAUTION: Causes rapid Stress Corrosion Cracking (SCC). Avoid brass. |
| Sea Water & Marine Brine | Fair / Good (B/C) | Up to 40°C | Use Naval Brass (C46400) or DZR brass with protective nickel plating. |
