{"id":3589,"date":"2026-09-16T11:03:28","date_gmt":"2026-09-16T08:03:28","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/en\/incoloy-825\/"},"modified":"2026-09-25T16:26:06","modified_gmt":"2026-09-25T13:26:06","slug":"incoloy-825","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/en\/incoloy-825\/","title":{"rendered":"Incoloy 825"},"content":{"rendered":"

<\/p>\n

Incoloy 825 \/ (2.4858) \/ UNS N08825<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
\n
Incoloy 825<\/div>\n
UNS N08825 \u00b7 W.Nr. 2.4858 \u00b7 NiCr21Mo (DIN 17744) \u00b7 BS 3076 NA16 \u00b7 38-46% Ni \u2013 19.5-23.5% Cr \u2013 22% min Fe \u2013 2.5-3.5% Mo \u2013 1.5-3.0% Cu \u2013 0.6-1.2% Ti \u2013 C 0.05% max. A titanium-STABILIZED nickel-iron-chromium-molybdenum-copper alloy. Note: VDM Metals limits carbon to 0.025% max in its own production; the ASTM ceiling is 0.05%.<\/div>\n
\n
Not to be confused with<\/div>\n

Incoloy 800H<\/a>Incoloy 925<\/a><\/div>\n<\/div>\n

\n
\n
For what<\/div>\n
A Ni-Fe-Cr-Mo-Cu SOLID-SOLUTION alloy. It DOES NOT PRECIPITATION HARDEN; it cannot be hardened by heat treatment, and strength is raised only by cold work.<\/div>\n<\/div>\n
\n
Forms<\/div>\n
Round bar \u00b7 Flat bar \u00b7 Plate \u00b7 Sheet \u00b7 Tube and pipe \u00b7 Forging. All forms are supplied to order.<\/div>\n<\/div>\n
\n
Standards<\/div>\n
THERE IS NO AMS. No published SAE\/AMS specification for N08825 could be found; the VDM Metals data sheet leaves the AMS row empty, and the Special Metals, ATI, NeoNickel, Superior Tube and Fine Tubes data sheets list only ASTM\/ASME (and NACE). \u00b7 ASTM B425 \/ ASME SB-425 \u2014 rod and bar. \u00b7 ASTM B424 \/ ASME SB-424 \u2014 plate, sheet and strip. \u00b7 ASTM B564 \/ ASME SB-564 \u2014 forgings. \u00b7 ASTM B423 \/ ASME SB-423 \u2014 seamless pipe and tube. \u00b7 ASTM B163 \/ ASME SB-163 \u2014 seamless condenser and heat-exchanger tube. \u00b7 ASTM B704 \u2014 welded tube \u00b7 ASTM B705 \u2014 welded pipe. \u00b7 ASTM B366 \/ ASME SB-366 \u2014 welded fittings. \u00b7 DIN 17744 (material name NiCr21Mo) \u00b7 DIN 17750 (plate\/sheet) \u00b7 DIN 17752 (bar) \u00b7 BS 3076 NA16 \u00b7 VdTUV 432 \u00b7 NACE MR0175 \/ ISO 15156 and NACE MR0103 \/ ISO 17945.
This alloy has no aerospace counterpart: none of the producer data sheets reviewed (Special Metals, VDM Metals, ATI, NeoNickel, Alleima, Superior Tube, Fine Tubes, Metalcor, Langley Alloys) gives an AMS number for N08825.<\/span><\/div>\n<\/div>\n
\n
Advantage<\/div>\n
Titanium stabilization (0.6-1.2% Ti) working together with about 40% nickel. Titanium ties up the carbon as Ti(C,N) inside the grains, so Cr23C6 does not precipitate at the grain boundaries and no chromium-depleted zone forms;<\/div>\n<\/div>\n
\n
Welding<\/div>\n
Filler metal: the matching filler is AWS A5.14 ERNiFeCr-1 (Filler Metal 65, UNS N08065) for GTAW and GMAW. Special Metals recommends INCONEL Filler Metal 625 (AWS A5.14 ERNiCrMo-3, UNS N06625) for gas-shielded welding and INCONEL Electrode 112 (AWS A5.11 ENiCrMo-3) for SMAW;<\/div>\n<\/div>\n
\n
Limits<\/div>\n
1) TEMPERATURE CEILING \u2014 above 540 \u00b0C, phase formation (microstructural change) markedly lowers ductility and impact strength; the alloy is NOT USED where creep-rupture properties are a design factor. Under ASME Section VIII Div. 1 the ceiling is 538 \u00b0C (1000 \u00b0F); VdTUV approval ends at 450 \u00b0C;<\/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

<\/p>\n