Amardeep Steel supplies HAYNES® 25 alloy (UNS R30605), a
cobalt-nickel-chromium-tungsten alloy noted for its remarkable high-temperature strength and
oxidation resistance in hostile conditions up to 1800°F (980°C). It is also resistant to sulfidation
and metal galling. This alloy is easily produced and shaped using traditional procedures, making it
ideal for a wide range of applications, including cast components.
Haynes 25TM alloy is the strongest fabricable cobalt alloy. It has outstanding thermal strength and
oxidation resistance up to 2000°F. Temperatures between 1900°F and 2300°F are suggested for hot
forming. However, for bending, spinning, and drawing processes, alloy L605, which has better
cold-working qualities, is preferred.
HAYNES® 25 alloy has good forming and welding capabilities. It may be forged or hot-worked
by heating it to 2200°F (1205°C) and repeating the process until the entire item achieves the
appropriate temperature. The alloy is also ductile, allowing for cold working. Complex forming
procedures, on the other hand, may necessitate multiple intermediate annealing treatments because of the
quick work-hardening characteristic of the material. To re-establish the best balance of
characteristics, any hot- or cold-worked components must be annealed and rapidly cooled. Welding can be
done manually or automatically using techniques such as gas tungsten arc (GTAW), gas metal arc (GMAW),
shielded metal arc, electron beam, and resistance welding. The alloy also has favorable properties for
restraint welding.
Features
Complies with AMS 5537 standards
AMS 5796 standards are met.
Extremely advantageous high-temperature strength
Provides resistance to oxidation up to 1800° F.
resistive to galling
Acid, bodily fluid, and marine environment resistance
Applications
HAYNES® 25 alloy combines qualities that make it appropriate for a variety of aircraft component
applications, including components in proven military and commercial gas turbine engines. It has mainly
been superseded in current engines by newer materials with greater qualities, such as HAYNES® 188 alloy
and, more recently, 230® alloy. Another important application for 25 alloys is as a bearing material,
for both balls and races.
UNS | R30605 |
Specifications | AMS 5759 |
International Specifications | Werkstoff Nr. 2.4964 |
Chemical Analysis | |
C | .05- .15 |
MN | 1.0- 2.0 |
P | .4 |
S | .03 |
Si | .4 |
Cr | 19.0- 21.0 |
Ni | 9.0- 11.0 |
Co | bal |
W | 14.0- 16.0 |
Properties | Metric | Imperial |
---|---|---|
Density | 9.13 g/cm³ | 0.33 lb/in³ |
Melting point | 1382°C | 2520°F |