{"id":3543,"date":"2026-09-16T10:58:40","date_gmt":"2026-09-16T07:58:40","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/en\/hastelloy-x\/"},"modified":"2026-09-25T16:26:01","modified_gmt":"2026-09-25T13:26:01","slug":"hastelloy-x","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/en\/hastelloy-x\/","title":{"rendered":"Hastelloy X \/ (2.4665) \/ AMS 5536 \/ AMS 5754"},"content":{"rendered":"

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Hastelloy X \/ (2.4665) \/ UNS N06002 \/ AMS 5536 \/ AMS 5754<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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Hastelloy X<\/div>\n
UNS N06002 \u00b7 W.Nr. 2.4665 \u00b7 NiCr21Fe18Mo9 (ISO) \u00b7 JIS NW6002 \u00b7 Nickel-base, solid-solution strengthened: ~22% Cr \u2013 18% Fe \u2013 9% Mo \u2013 1.5% Co \u2013 0.6% W \u2013 0.1% C, balance Ni (~47%). Specification ranges: Cr 20.5-23.0 \u00b7 Mo 8.0-10.0 \u00b7 Fe 17.0-20.0 \u00b7 Co 0.5-2.5 \u00b7 W 0.2-1.0 \u00b7 C 0.05-0.15. NOT PRECIPITATION HARDENABLE.<\/div>\n
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Not to be confused with<\/div>\n

Inconel 625<\/a><\/div>\n<\/div>\n

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For what<\/div>\n
Bought for gas turbine combustion-zone hardware (combustor liners, transition ducts, flame holders, exhaust cones, afterburner parts) and industrial furnace internals.<\/div>\n<\/div>\n
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Forms<\/div>\n
Bar\/rod \u00b7 plate \u00b7 sheet \u00b7 strip \u00b7 seamless pipe\/tube \u00b7 welded pipe\/tube \u00b7 forgings \u00b7 fittings \u00b7 welding wire\/electrode. (Product-form list taken from the defencemetal.com page.)<\/div>\n<\/div>\n
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Standards<\/div>\n
AMS 5536<\/b> (sheet, strip, plate) \u00b7 AMS 5754<\/b> (bars, forgings, rings and forging\/ring\/heading stock) \u00b7 AMS 5587<\/b> (seamless tubing) \u00b7 AMS 5588<\/b> (welded tubing) \u00b7 AMS 5798<\/b> (welding wire). ASTM: B435 (plate\/sheet\/strip) \u00b7 B572 (rod) \u00b7 B472 (billets and bars for reforging) \u00b7 B622 (seamless pipe and tube) \u00b7 B619 (welded pipe) \u00b7 B626 (welded tube) \u00b7 B366 (factory-made wrought fittings). ASME: SB-435 \u00b7 SB-572 \u00b7 SB-619 \u00b7 SB-622 \u00b7 SB-626 \u00b7 SFA-5.14. AWS A5.14 ERNiCrMo-2 (filler wire). DIN 17742 (2.4665).
Every AMS number was verified against the SAE specification title, which states the composition 47.5Ni-22Cr-1.5Co-9.0Mo-0.60W-18.5Fe \u2014 that composition is N06002. CAUTION: some sales pages list ‘AMS 5574’ for Hastelloy X round bar.<\/span><\/div>\n<\/div>\n
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Advantage<\/div>\n
It keeps its ductility after long hot exposure. After 16,000 hours at 650, 760 and 870 \u00b0C the room-temperature elongation drops but in no case falls below the 15-30% band (peer-reviewed study), and metal loss measured in flowing air at 980 \u00b0C for 1008 hours was only 0.29 mils per side (~7 \u00b5m).<\/div>\n<\/div>\n
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Welding<\/div>\n
Filler metal: AMS 5798<\/b> \/ AWS A5.14 ERNiCrMo-2 matching filler wire. Special Metals also lists INCONEL filler metal 617 and INCONEL electrode 117 for this alloy. No preheat is required; the part is warmed above ambient only enough to prevent moisture condensation.<\/div>\n<\/div>\n
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Limits<\/div>\n
This is not a precipitation-hardening alloy; strength is not developed by ageing. Long exposure in the 650-870 \u00b0C band precipitates carbides, sigma and mu phase: hardness rises while room-temperature ductility and impact toughness fall.<\/div>\n<\/div>\n
REQUEST A QUOTE<\/a>All nickel alloys →<\/a>TECHNICAL DETAILS ↓<\/span><\/div>\n
Compiled from manufacturer data sheets \u00b7 confirm against the current specification before ordering<\/div>\n<\/div>\n<\/div>\n

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