Admiralty Brass Tubes
One Piece Extruded Tubes, ABS Tubes, Two Piece Formed Tubes. Admiralty Brass tubes has good corrosion resistance and is specially used for tubing of steam condensers cooled with fresh, brackish or salt water. Admiralty brass, which constitutes of 30% zinc and 1% tin & inhibits dezincification in most environments. The most common and wrought form is tube for heat exchange equipment. These tubes are extensively used in various applications including ship-building, water heaters, evaporators, heaters, turbine oil coolers for petrochemical, desalinations plants, condensate coolers, vent condensers, generator, air coolers, power plants etc.
Specification
| Standard | BS 2871 PART3 | ASTM B 111 | DIN 1785 | NFA 51 102 | JIS H3300 | IS 1545 |
| Symbol | CZ 111 | C 44300 | CuZn28Sn1 | CuZn29Sn1 | C 4430 | CuZn29Sn1As |
| Cu | 70.0-73.0 | 70.0-73.0 | 70.0-72.5 | 70.0-73.0 | 70.0-73.0 | 70.0-73.0 |
| Sn | 1.0-1.5 | 0.9-1.2 | 0.9-1.3 | 0.9-1.2 | 0.9-1.2 | 1.0-1.5 |
| Pb | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 | 0.07 |
| Ni | - | - | 0.1 | - | - | - |
| Fe | 0.06 | 0.06 | 0.07 | 0.06 | 0.06 | 0.06 |
| Zn | REM'DER | REM'DER | REM'DER | REM'DER | REM'DER | REM'DER |
| As | 0.02-0.06 | 0.02-0.06 | 0.02-0.035 | 0.02-0.06 | 0.02-0.06 | 0.02-0.06 |
| P | - | - | 0.01 | - | - | - |
| Total Impurities Max. | - | |||||
| 0.03 | - | 0.1 | 0.3 | - | 0.3 | |
| Condition | M | 61 | F36 | - | - | O |
| TA | - | F32 | - | O | TA | |
| O | - | - | - | - | D | |
| Yield Strength N/MM2 | - | - | 140-220 | - | - | - |
| - | 105 | 100-170 | - | - | - | |
| Tensile N/MM2 Minimum | - | 310 | 360 | - | - | 375 Mpa Max. |
| - | - | 320 | - | 314Min. | 340 Mpa Min. | |
| - | - | - | - | - | 385 Mpa Min. | |
| Elng'Tion Percent (%) Minimum | - | - | 45Min. | - | -. | - |
| - | - | 55Min. | - | 30 Min. | - | |
| Hardness HV5 - | 150Min | - | - | - | - | 80 Max. |
| 85-105 | - | - | 80-120 | - | 80-105 | |
| 75Max. | - | - | - | - | 130 Min. | |
| Grain Size mm (75X) | 0.05Max. | 0.010-0.045 | - | 0.010-0.045 | 0.010-0.045 | 0.010-0.04 |