{"id":3601,"date":"2026-09-16T11:04:58","date_gmt":"2026-09-16T08:04:58","guid":{"rendered":"https:\/\/www.defencemetal.com\/index.php\/en\/hastelloy-b-3\/"},"modified":"2026-09-25T16:26:27","modified_gmt":"2026-09-25T13:26:27","slug":"hastelloy-b-3","status":"publish","type":"page","link":"https:\/\/www.defencemetal.com\/index.php\/en\/hastelloy-b-3\/","title":{"rendered":"Hastelloy B-3"},"content":{"rendered":"

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Hastelloy B-3 \/ (2.4600) \/ UNS N10675<\/h1>\n
DEFENCE METAL<\/span><\/p>\n
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Hastelloy B-3<\/div>\n
UNS N10675 \u00b7 W.Nr. 2.4600 \u00b7 NiMo29Cr (DIN 17744) \u00b7 ISO NiMo30Cr \/ Ni1067 \u00b7 Ni 65.0 min \u2013 Mo 27.0-32.0 \u2013 Cr 1.0-3.0 \u2013 Fe 1.0-3.0 \u2013 Co 3.0 max \u2013 Mn 3.0 max \u2013 W 3.0 max \u2013 Al 0.50 max \u2013 Ti 0.20 max \u2013 Si 0.10 max \u2013 C 0.010 max. Nominal figures given by Haynes International: Ni 65, Mo 28.5, Cr 1.5, Fe 1.5. DO NOT CONFUSE WITH B-2: B-2 (UNS N10665) is a separate alloy and B-3 was developed to replace it (see the comparison diagram). Trade names: HASTELLOY B-3 (Haynes International) \u00b7 Alloy B-3 (Corrosion Materials) \u00b7 Alloy B3 (Zapp, Virgamet).<\/div>\n
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Not to be confused with<\/div>\n

Hastelloy C-276<\/a><\/div>\n<\/div>\n

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For what<\/div>\n
A Ni-Mo 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 solution annealing.<\/div>\n<\/div>\n
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Forms<\/div>\n
Round bar \u00b7 plate \u00b7 sheet \u00b7 strip \u00b7 seamless pipe and tube \u00b7 welded pipe \u00b7 welded tube \u00b7 forging \u00b7 forged fitting \u00b7 flange \u00b7 valve body \u00b7 bare welding wire \u00b7 covered electrode. All forms are supplied to order.<\/div>\n<\/div>\n
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Standards<\/div>\n
THERE IS NO AMS NUMBER (see the specification note). ASTM\/ASME: ASTM B333 \/ ASME SB-333 (plate, sheet, strip) \u00b7 ASTM B335 \/ SB-335 (billet, rod, bar) \u00b7 ASTM B622 \/ SB-622 (seamless pipe and tube) \u00b7 ASTM B619 \/ SB-619 (welded pipe) \u00b7 ASTM B626 \/ SB-626 (welded tube) \u00b7 ASTM B564 \/ SB-564 (forgings) \u00b7 ASTM B462 \/ SB-462 (forged or rolled flanges, fittings and valve parts) \u00b7 ASTM B366 \/ SB-366 (factory-made wrought fittings; class marking CRHB3). Europe: DIN 17744 (2.4600 NiMo29Cr) \u00b7 DIN 17750\/17751\/17752\/17754 \u00b7 VdTUV Werkstoffblatt 517. Welding consumables: AWS A5.14 \/ SFA-5.14 ERNiMo-10 (bare wire) \u00b7 AWS A5.11 \/ SFA-5.11 ENiMo-10 (covered electrode) \u00b7 DIN 2.4695 (wire) \u00b7 DIN 2.4696 (electrode). Code: 427 C (800 F) ceiling in ASME BPVC Section VIII Div. 1 and ASME B31.3 \u00b7 343 C (650 F) in ASME Section XII \u00b7 ASME Code Case 2140 \u00b7 ASME Section IX P-No. 44, F-No. 44.
NO VERIFIED AMS SPECIFICATION COULD BE FOUND FOR N10675. The two numbers quoted alongside B-3 in the market were checked ONE BY ONE and BOTH TURNED OUT TO BELONG TO A DIFFERENT ALLOY: (1) AMS 5891 \u2014 SAE’s own catalogue title reads ‘Nickel Alloy, Corrosion and\u2026<\/span><\/div>\n<\/div>\n
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Advantage<\/div>\n
Resistance to hydrochloric acid at all concentrations and all temperatures: the corrosion rate reported in 20% HCl is 0.305 mm\/year (Virgamet), and typical HCl service figures are reported below 0.13 mm\/year.<\/div>\n<\/div>\n
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Welding<\/div>\n
Welded by GTAW\/TIG, GMAW\/MIG and SMAW\/covered electrode. Filler metal: ERNiMo-10 (bare wire, AWS A5.14) and ENiMo-10 (covered electrode, AWS A5.11); on the European side SG-NiMo30Cr. NO PREHEAT IS REQUIRED.<\/div>\n<\/div>\n
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Limits<\/div>\n
1) IT IS NOT USED IN OXIDIZING MEDIA \u2014 this is the single hardest limit on the alloy. Chromium is only 1-3%; there is no chromium to carry an oxidizing environment.<\/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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