Overview

Waspaloy (UNS N07001/W. Nr. 2.4654) is a nickelbase, age hardenable superalloy with excellent hightemperature strength and good corrosion resistance,notably to oxidation, at service temperatures up to 1200°F (650°C) for critical rotating applications, and up to 1600°F (870°C) for other, less demanding, applications.

The alloy’s high-temperature strength is derived from its solid solution strengthening elements, molybdenum, cobalt and chromium, and its agehardening elements, aluminum and titanium. 

Limiting Chemical Composition, %

Nickel.........................................................................................................................................................................................Balance.

Chromium............................................................................................................................................................................18.00-21.00

Cobalt..................................................................................................................................................................................12.00-15.00

Boron......................................................................................................................................................................................0.003-0.01

Zirconium.................................................................................................................................................................................0.02-0.12

Aluminum.................................................................................................................................................................................1.20-1.60

Titanium...................................................................................................................................................................................2.75-3.25

Molybdenum............................................................................................................................................................................3.50-5.00

Copper......................................................................................................................................................................................0.50 max.

Iron...........................................................................................................................................................................................2.00 max.

Sulfur......................................................................................................................................................................................0.030 max.

Silicon......................................................................................................................................................................................0.75 max.

Manganese..............................................................................................................................................................................1.00 max.

Carbon......................................................................................................................................................................................0.02-0.10  

Phosphorus...........................................................................................................................................................................0.030 max.

Carbon......................................................................................................................................................................................0.03 max.

Sulfur.........................................................................................................................................................................................0.03 max.

Physical Constants

Mechanical properties-Room Temperature

Corrosion Resistance  

Waspaloy has excellent resistance to corrosion by combustion products, encountered in gas turbines and aircraft jet engines, at temperatures up to 1600°F. Intergranular oxidation occurs at temperatures above 1600°F.

Heat treatment

Waspaloy is heat treated in a three-step sequence encompassing solution treatment, stabilization and agehardening.

A. For optimum high-temperature creep and stress-rupture properties.

Solution treatment - heat at 1080°C (1975°F)/4h/AC to produce hardness of 20-25 Rockwell C.

Stabilization - reheat to 845°C (1550°F)/24h/AC.

Age harden - reheat to 760°C (1400°F)/16h/AC to produce hardness of 34-40 Rockwell C.

B. For optimum room- and high-temperature tensile properties.

Solution treatment - heat at 995-1035°C (1825-1895°F)/4h/oil quench.

Stabilization - reheat to 845°C (1550°F)/4h/AC.

Age harden - reheat to 760°C (1400°F)/16h/AC to produce hardness of 34-44 Rockwell C.

Scale formed during heat-treatment in oxidizing atmospheres may be removed by acid pickling or by mechanical means.

Available  Forms

We provide you with a variety of product forms, including but not limited to.

● Bars & Rods

● Strips & Tape

● Wire & Welding

● Pipe & Tube

● Sheet & Foils

● Flanges & Forgins