Alloy Information Report for Incoloy™ 901

General Characteristics of Incoloy™ 901

With a high creep and rupture strength to 1400°F (760°C), Incoloy™ 901is a nickel-iron-chromium alloy ideally suited for gas turbine and aircraft applications. Because of its high nickel content, it can be joined with ferritic alloy steels without thermal expansion provisions.

Chemical Composition of Incoloy™ 901

Carbon 0.05
Manganese 0.48
Silicon 0.22
Chromium 12.8
Molybdenum 5.7
Titanium 2.4
Iron 35
Nickel 43

Heat Treatment of Incoloy™ 901

Anneal by holding at 2050°F (1121°C) for 2 hours before water quenching
Age by holding at 1375°F (746°C) for 24 hours before air cooling; expect approximately 0.1% contraction

Applications of Incoloy™ 901

Gas turbine parts, including rotor and compressor discs, and structural components
Aircraft applications

Machinability of Incoloy™ 901

Use high-speed steel tools and cutting fluid
Cut at 180 sfpm
Use cobalt high-speed cutting tools with heavy feeds and slow speeds
Grind high speed steel roughing tools to 8° side and back rake, 4-6° side clearance, 6-8° end clearance, 15-25° side cutting-edge angle, 1/32” nose radius
15-35 sfpm surface cutting speeds with 1/16-1/32” deep cuts and 0.010-0.015 in./rev. feed
Finishing cuts to 35 sfpm; clorinated and sulfurized cutting oils
Cemented carbide tools
- 30 to 60 sfpm
- 0° to 5° back rake
- 5° side rake
- Chemical-active water soluble lubricants or plain soluble oil and water or lubricants

Workability of Incoloy™ 901

Hot and cold
Forge between 2050°F (1121°C) and 1850°F (1010°C)
1600°F (871°C) minimum temperature for light working without bending or tensile stress
Avoid exposure to sources of sulfur and sulfurous atmospheres

To Send a Request for Quote for Incoloy™ 901, please Click Here, or call 1.973.276.5000 or fax 1.973.276.5050.