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Grade

Alloy 625 nickel alloy strip

Nickel-chromium-molybdenum-niobium alloy: for the most aggressive environments and high temperatures.

2.4856 · NiCr22Mo9NbNickel alloyThickness 0.05–0.70 mmWidth 3–1250 mm
Alloy 625 – Alloy 625 nickel alloy strip

Description

Alloy 625 (EN 2.4856, NiCr22Mo9Nb, UNS N06625) is a nickel alloy with around 21% chromium, 9% molybdenum and 3.5% niobium. It combines excellent corrosion resistance in very aggressive environments, such as seawater, acids and flue gases, with high mechanical and fatigue strength up to high temperatures. It does not suffer from chloride stress corrosion cracking and is used in the chemical and petrochemical industry, aerospace, exhaust systems, bellows and components for boilers and offshore installations. 3S supplies Alloy 625 precision strip in the annealed condition, as strip, narrow strips and spools from 0.05 to 0.70 mm.

Properties

  • Excellent corrosion resistance in very aggressive environments
  • Immune to chloride stress corrosion cracking
  • High mechanical and fatigue strength at high temperature
  • Good weldability and formability

Applications for this grade

Supply

ParameterRangeNotes
ThicknessAnnealed 0.05 – 0.70 mmOther thicknesses on request
Width3 – 1250 mmSlitting with sheared or deburred edges
FinishesAnnealed 2R / BA • Work‑hardened 2HCalibrated mechanical properties
FormatsStrip • Narrow strips • Spools • SheetsSheets cut to size up to 1000 mm
SpoolsFrom 15 kg to 1500 kgID 50–400 mm • traverse or parallel winding

Tolerances according to EN ISO 9445 or customer specification. 3.1 certificates on request.

Frequently asked questions

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Is Alloy 625 a stainless steel?
No, it is a nickel-based alloy (over 58% nickel) with chromium, molybdenum and niobium. It is used where stainless steels, even super-austenitic grades, are not enough for corrosion or temperature.
In what thicknesses do you supply Alloy 625?
As annealed precision strip from 0.05 to 0.70 mm, in widths from 3 to 1250 mm, including narrow strips and spools. Tell us the dimensions and quantity for a quotation.