Greek Ascoloy is a higher strength modification of the 12% chromium family of martensitic stainless steels. Retains corrosion and oxidation resistance and has usable strength and creep resistance to 1050°F (566°C). Greek Ascoloy is used for jet engine compressor blades and vanes due to resistance to stress corrosion cracking. Also used for discs in lower temperature turbine stages and for turbine diffuser components.
Properties: Non-magnetic. Magnetic. The corrosion resistance of Greek Ascoloy is similar to Type 410 stainless steel. This alloy resists oxidation up to 1400°F (760°C) and may be used in continuous service at 1100°F (593°C). A wide range of mechanical properties can be obtained by hardening and tempering this alloy.
Hardness: Hardness of Aerodyne stock is typically 250 BHN. Supplied in the fully annealed condition. Hardening is accomplished by austenitizing at 1750-1800°F (954-982°C) followed by air or oil quench to form martensite. Immediately following austenitizing, tempering should be carried out in the range of 1000-1250°F (538-677°C) for two hours. The hot working range is 1700-2150°F (927-1177°C). Large sections should be preheated at 1200-1400ºF (649-760°C) to prevent strain cracking.
Machinability: RATING: 55% OF B-1112
TYPICAL STOCK REMOVAL RATE: 90 surface feet/minute with high speed tools, 150 surface feet/minute with carbide.
COMMENTS: Best machinability is in the fully annealed condition. Greek Ascoloy has a low work hardening rate and is not a gummy like austenitic stainless steels during machining.
Density: 0.284 lbs/in3, 7.86 g/cm3
Ask an Aviation Metals expert
Additional information
| tempers | |
|---|---|
| conditions | |
| specifications | |
| dimension-1 | .1875", 1-1/2”, 1-1/4”, 1-1/8”, 1-11/16, 1-13/16”, 1-15/16”, 1-3/16”, 1-3/4”, 1-3/8”, 1-5/16”, 1-5/32”, 1-5/8”, 1-7/16”, 1-7/8”, 1-9/16”, 1”, 1/2", 1/4", 1/8”, 11/16", 13/16", 15/16”, 2-1/2”, 2-1/4”, 2-1/8”, 2-11/16”, 2-13/16”, 2-15/16”, 2-3/16”, 2-3/4”, 2-3/8”, 2-5/16”, 2-5/8”, 2-7/16”, 2-7/8”, 2-9/16”, 2", 3”, 3/16", 3/4", 3/8", 5/16", 5/8", 7/16", 7/8", 9/16", Other (Please Specify) |
| dimension-2 | |
| dimension-3 |