Characteristic
Construction material with high strength values, resistant in cold and even hot seawater. Very
good thermal stability and fatigue strength in air and seawater. Highly resistant to cavitation
and corrosion. Good lubrication is required when there is sliding stress. Very good pressure
tightness and weldability. Highly stressed slide bearing and worm rims. High-pressure steam
fitting, fittings for aggressive waters, pump housing.
| Common name | Material description | World specifications: European | World specifications: British | World specifications: American |
| Al bronze | CuAl10Fe5Ni5-B | CC491K / CB491K (EN 1982) | AB2 (BS 1400) | C95800 (ASTM B 505) |
Other name: JIS Al BC 3, GOST BrA10Z4N4L, ASTM C95520, AS C95810, GC-CuAl10Ni, БрA9ж4н4мц1, БрA10ж4н4лThe equivalence between the standards is not absolute and some variations in composition can exist.
Similar or Equivalent Specifications
| UNS | ASTM | SAE | AMS | Federal | Military | Other |
| C95800 | B505 |
Chemical Composition in %, (EN 1982:2017, Ingots)
| Cu | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Cr | Bi | Sb | Mg | |
| Min | 76.0 | – | – | – | 4.0 | 8.8 | 4.0 | – | – | – | – | – | – | – | – |
| Max | 82.5 | 0.1 | 0.03 | 0.4 | 5.5 | 10.5 | 5.3 | 2.5 | – | – | 0.10 | 0.05 | 0.01 | – | 0.05 |
Mechanical Properties
| Rm | Tensile strength min. | 586 N/mm2 |
| Rp0.2 | Proof Strength min. | 241 N/mm2 |
| A(50mm) | Elongation min. | 18% |
| HB | Brinell hardness min. | 159 HBW |
Properties:
- sea water resistant.
- having higher mechanical properties and better corrosion resistance
Application:
- superheated steam fittings;
- headers and baffle plates in mechanical;
- as well as petrochemical engineering;
- marine screw propellers;
- stern tubes;
- running wheels;
- pump cases.