{"id":3583,"date":"2026-09-16T11:03:07","date_gmt":"2026-09-16T08:03:07","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/en\/inconel-601\/"},"modified":"2026-09-25T21:14:42","modified_gmt":"2026-09-25T18:14:42","slug":"inconel-601","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/en\/inconel-601\/","title":{"rendered":"Inconel 601"},"content":{"rendered":"

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Inconel 601 \/ (2.4851) \/ UNS N06601 \/ AMS 5870<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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Inconel 601<\/div>\n
UNS N06601 \u00b7 W.Nr. 2.4851 \u00b7 NiCr23Fe (EN) \u00b7 ISO NiCr23Fe15Al \u00b7 AFNOR NC23FeA \u00b7 DIN 17742 family \u00b7 Ni 58.0-63.0 \u2013 Cr 21.0-25.0 \u2013 Al 1.00-1.70 \u2013 C 0.10 max (VDM Metals 0.03-0.10) \u2013 Mn 1.0 max \u2013 Si 0.50 max \u2013 Cu 1.0 max \u2013 S 0.015 max \u2013 Fe balance (~14). DO NOT CONFUSE WITH 600: 601 (N06601) and 600 (N06600) ARE NOT the same alloy. In 600 nickel is 72% min and chromium 14-17%, and ALUMINIUM IS NOT IN THE SPECIFICATION; in 601 nickel is 58-63%, chromium 21-25% and 1.0-1.7% ALUMINIUM IS A SPECIFICATION REQUIREMENT. The distinguishing element is aluminium (see the comparison diagram). Trade names: INCONEL alloy 601 (Special Metals) \u00b7 VDM Alloy 601 \/ Nicrofer 6023 H (VDM Metals) \u00b7 601 (Rolled Alloys).<\/p>\n
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Not to be confused with<\/div>\n

Inconel 600<\/a><\/div>\n<\/div>\n<\/div>\n

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For what<\/div>\n
A Ni-Cr-Fe-Al SOLID-SOLUTION alloy. IT IS NOT PRECIPITATION HARDENABLE; it cannot be hardened by heat treatment, strength is raised only by cold work and is removed again by annealing.<\/div>\n<\/div>\n
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Forms<\/div>\n
Round bar \u00b7 flat bar \u00b7 plate \u00b7 sheet \u00b7 strip \u00b7 wire \u00b7 seamless pipe and tube \u00b7 forging. All forms are supplied to order.<\/div>\n<\/div>\n
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Standards<\/div>\n
AMS: AMS 5870<\/b> (sheet, strip, plate \u2014 solution heat treated) \u00b7 AMS 5715<\/b> (bars, forgings, rings and stock for forgings and rings \u2014 annealed). ASTM\/ASME: ASTM B168 \/ ASME SB-168 (plate, sheet, strip) \u00b7 ASTM B166 \/ SB-166 (rod, bar, wire) \u00b7 ASTM B167 \/ SB-167 (seamless pipe and tube) \u00b7 ASTM B163 \/ SB-163 (seamless condenser and heat-exchanger tube) \u00b7 ASTM B751, B775, B829 for general requirements. Europe: EN 10095 \u00b7 DIN 17742 \/ 17750 \/ 17751 \/ 17752 \/ 17753 \u00b7 ISO 6207 \u00b7 ISO 6208 \u00b7 ISO 9723 \/ 9724 \/ 9725 \u00b7 SEW 5870 (VDM Metals list) \u00b7 VdTUV. Welding consumables: ISO 18274. Code: ASME Code Case 1500.
BOTH AMS NUMBERS WERE VERIFIED ONE BY ONE AND BOTH BELONG TO 601. SAE\/ANSI catalogue titles: AMS 5870 = ‘Nickel Alloy, Corrosion- and Heat-Resistant, Sheet, Strip, and Plate 60.5Ni – 23Cr – 14Fe – 0.35Ti – 1.4Al (Alloy 601), Solution Heat Treated’;<\/span><\/div>\n<\/div>\n
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Advantage<\/div>\n
The aluminium addition (1.0-1.7%). Aluminium builds a TIGHTLY ADHERENT oxide layer that resists spalling under thermal cycling; in Special Metals’ own cyclic oxidation tests, 601 shows both lower weight change and better spalling resistance than 600 and than 800 at 1093 C (2000 F).<\/div>\n<\/div>\n
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Welding<\/div>\n
Joined by the standard resistance and fusion welding processes used for stainless steels. Filler metal: matching 601 GTAW wire (Rolled Alloys), INCONEL Filler Metal 82 or matching filler (GMAW\/GTAW), INCO-WELD A or 182 covered electrode (SMAW).<\/div>\n<\/div>\n
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Limits<\/div>\n
1) SULPHUR-BEARING REDUCING ENVIRONMENTS: it sulphidizes because of the high nickel content. Rolled Alloys states plainly that it is ‘not suggested for use in strongly reducing, sulfur bearing environments’; Jacquet states that ‘sufficiently aggressive sulfidizing conditions will cause sulfidation’.<\/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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