Greek Ascoloy

Technical Data Sheet


Chemical Composition Limits
Weight% C P Si Ni W Mn S Cr Mo Fe
Greek Ascoloy 0.15-0.20 0.040 max 0.50 max 1.80-2.20 2.5-3.5 0.50 max 0.030 max 12-14 0.50 max Bal

Greek Ascoloy is a hardenable chromium-nickel-tungsten martensitic alloy. Greek Ascoloy is designed for use in highly stressed parts at temperature up to 1200ºF (649ºC). It obtains deep hardening and has superior creep strength, resistance to tempering and stress-corrosion cracking together with the properties of the standard 12% chromium grades of stainless steel.

Typical Mechanical Properties


Alloy Test Temp Yield Strength 0.2% offset Ultimate Tensile Strength
Elongation in 2"(%) Reduction of Area %
°F °C ksi MPa ksi MPa
Greek Ascoloy 70 21 115 793 140.8 971 21 58
Greek Ascoloy 90 482 82 565 100 689 16 63
Greek Ascoloy 1000 538 70 483 84 579 22 74
Greek Ascoloy 1100 593 55 379 67 462 30 83
Specimens heat treated by hardening at 1750°F (954°C), oil quench followed by tempering at 1200°F (649°C), air cool

Greek Ascoloy is available as Bar (Round), Wire, Sheet, Plate, Strip, Forgings, Extrusions, Rings, Tube and Welding Wire. For all stock availability contact Sales.

AMS 5616 Bar / Forgings / Wire
AISI 615 Bar / Forgings / Wire
AMS 5508 Sheet / Strip / Plate
AISI 418 Sheet / Strip / Plate
UNS S41800

At Aircraft Materials all stock items can be shipped out within 24 hours, usually within the same day. Even cutting orders for bar or sheet can be processed and dispatched the same day, and for time-critical situations such as AOGs, we have a dedicated AOG service desk ready to help (

Thanks to our global logistics network we can source from anywhere in the world in just a few days. We use a range of transport partners to enable us to ship overnight within the U.K. and Europe and provide fast shipping solutions to the rest of the world. If your requirement is urgent we can offer a priority shipping service, but also if time is not so critical we can offer more cost-effective options to ensure you get the best value for money. To find out more about our services click here.

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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