Description
A Copper Zinc Alloy containing Aluminum and small amount of Arsenic which is added as an inhibitor against dezincification. Inhibited Aluminum brass resists the action of high velocity salt and brackish water and is commonly used for condensor tubes. The outstanding characteristics of aluminum brass is the high resistance to impingement attack. Tubes of this alloy are recommended for use in marine and land power stations where cooling water velocities are high and where inhibited admiralty brass has failed from impingement.
Application
Equivalent Specifications
| SPECIFICATIONS | DESIGNATION |
|---|---|
| ISO | CuZn20Al2 |
| Europen | CuZn20Al2 |
| BS | CZ 110 |
| JIS | C6870 |
| Russian | LAMs77-2-0.05 |
| CATEGORY |
ASTM | BS | EN | JIS | DIN | ISO | IS |
| Aluminum Brass | C68700 | CZ110 | CW702R | H3300(92) C6870 T | 2.046 | IS 1545 Cuzn21Al2As |
Chemical Composition
| Al | As | Cu | Fe | Pb | Zn | |
|---|---|---|---|---|---|---|
| Min/Max | 1.8 - 2.5 | 0.02 - 0.06 | 76.0 - 79.0 | 0.06 | 0.07 | Rem |
| Nominals | 2.0000 | 0.0400 | 77.5000 | - | - | 20.5000 |
Physical Properties
| Coefficient of Thermal Expansion | 10.3 10−6Per °F (68-572 F) |
| Density | 0.301 lb/in3 at 68 F |
| Electrical Conductivity | 23 %IACS @ 68 F |
| Electrical Resistivity | 45.1 ohms-cmil/ft @ 68 F |
| Melting Point Liquid US | 1780 F |
| Melting Point Solid US | 1710 F |
| Modulas of Elasticity in Tension | 16000 ksi |
| Modulas of Rigidity | 6000 ksi |
| Specific Gravity | 8.33 |
| Specific Heat Capacity | 0.09 Btu/lb/°F @ 68 F |
| Thermal Conductivity | 58.0 BTU in/hr.ft2.°F @ 68 F |
Sizes Available in other forms
| HOLLOW RODS | Min Bore Size 20 mm and Max OD 100 mm |
| ROUND RODS/RODS | 6mm To 130 mm |
| HEX | 5mm To 60mm |
| SQUARE | 4mm To 60mm |
| FLAT | 5mm Min Thickness and max Width 120mm |
| PROFILES / SECTIONS | AS per Customer Drawing |
| BILLETS | Up to 200 mm |
| INGOTS | AS per Specification |
