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Nickel Alloys

Monel Alloy 400, Monel Alloy K500, Alloy 625, Alloy 718, Alloy 80A, Hastelloy C276, Alloy 600 and Alloy 825 represent Columbia Metals’ ever-expanding range of nickel alloys. These alloys offer properties including high strength and toughness, excellent performance at high temperature, excellent corrosion resistance in seawater and good resistance in hydrofluoric acid, dilute non-oxidising acid, alkalis and salts. As such, nickel alloys are widely used and specified for components in the offshore oil and gas, chemical processing and nuclear industries.

Our stock ranges from nickel copper through to high strength, temperature-resistant superalloy grades. Monel Alloy 400 (NA13, N04400) and Monel Alloy K500 (NA18, N05500) offer strength, hardness and corrosion resistance with good fabrication capabilities. The nickel chromium alloys, including inconel® 625, Alloy 718 (stocked to AMS5662 and API6A), Alloy 600 and Alloy 825, offer various levels of high temperature strength, pitting resistance, corrosion and erosion resistance in a wide range of organic and mineral acids as well as sulphides and chlorides. Hastelloy C276 has a high molybdenum content giving it a remarkable pitting and crevice corrosion resistance in a wide range of processing environments.

Nickel Alloys

Nickel Alloys Specification:

Alloy Name BS UNS BS EN Others Ultimate Tensile Strength N/mm² Minimum Yield Strength N/mm² Elongation % Hardness HB
Alloy 600 NA14 N06600 BS3076 550 240 30
Alloy 625 NA21 N06625 AMS 5666 690 275 30
Alloy 718 N07718 AMS 5662, 5663, 5664 1034 827 17 313-354
API6A718 N07718 API6A718 1034 827 17 313-354
Alloy 825 NA16 N08825 BS3076 590 220 30
Hastelloy C276 N10276 HASTELLOY® 690 283 40
Alloy 80A BS3076 NA20 N07080 BS2 HR1
Monel Alloy K500 NA13 N04400 BS3076 480-600 170-415 20-35 35 HRC max
Monel Alloy 400 NA18 N05500 BS3076 970-1000 690-760 15-20 27-35 HRC


  • Nuclear Power Plants
  • Oil & Gas industry
  • Petrochemical & Refinery
  • Chemical & Fertilizer
  • Power Plant & All major process industries.