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Model No: AMS 5616 / UNS S41800 / Greek Ascoloy

AMS 5616 / UNS S41800 / Greek Ascoloy Aircraft Steel

Buy AMS 5616 Greek Ascoloy aircraft steel at factory price. Deep-hardening martensitic stainless with high strength to 1200°F. Superior creep strength and SCC resistance. Turbine blades, fasteners, jet engines. ISO 9001 & AS 9120B certified. Fast delivery.
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AMS 5616 is a core aerospace specification governing Greek Ascoloy (UNS S41800 / AISI 418), a premium chromium-nickel-tungsten martensitic heat-resistant stainless steel. This standard covers bars, wire, forgings, mechanical tubing, flash-welded rings and various forging stock materials, widely adopted for high-stress and high-temperature aviation and industrial components.
 
Developed for extreme thermal service conditions, Greek Ascoloy stands out from ordinary 12% chromium martensitic stainless steels with exceptional high-temperature strength, deep hardening performance and excellent creep resistance. It delivers stable structural performance under long-term high-load operation, with a continuous service temperature capacity up to 1200°F (649°C).
 
As a reliable China aerospace-grade stainless steel supplier,ZYTC Alloy provides fully AMS 5616 compliant Greek Ascoloy products with standardized heat treatment, complete certification and customizable processing services for global aviation, defense and energy industries.

Chemical Composition 

Weight%CPSiNiWMnSCrMoFe
Greek Ascoloy0.15-0.200.040 max0.50 max1.80-2.202.5-3.50.50 max0.030 max12-140.50 maxBal
 

Typical Mechanical Properties

AlloyTest TempYield Strength 0.2% offsetUltimate Tensile StrengthElongation in 2"(%)Reduction of Area %
°F°CksiMPaksiMPa
Greek Ascoloy7021115793140.89712158
Greek Ascoloy90482825651006891663
Greek Ascoloy100053870483845792274
Greek Ascoloy110059355379674623083
Specimens heat treated by hardening at 1750°F (954°C), oil quench followed by tempering at 1200°F (649°C), air cool

Product Forms & Availability – Greek Ascoloy (UNS S41800)

Product FormAvailability
Round BarIn stock
WireAvailable
Sheet / Strip / PlateAMS 5508
ForgingsAvailable
ExtrusionsAvailable
RingsAvailable
TubeAvailable
Welding WireAvailable

For all stock availability, contact Sales.


Specifications – Greek Ascoloy

SpecificationProduct Form
AMS 5616Bar, forgings, wire 
AMS 5508Sheet, strip, plate
AISI 615Bar, forgings, wire
AISI 418Sheet, strip, plate
ASTM A565Bar
UNS S41800Unified numbering system 

Applications

  • Gas Turbine Engines: Compressor blades, vanes, discs (lower temperature stages), turbine diffuser components 

  • Steam Turbines: Steam turbine buckets, blades 

  • Jet Engine Components: Compressor parts, high-temperature fasteners 

  • Aerospace: Aircraft landing gear components 

  • Industrial: High-temperature bolts, petrochemical components

Contact ZYTC Alloy for certified AMS 5616 Greek Ascoloy stainless steel, customized sizes and factory-direct competitive quotations.
 
📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350
 
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