Inconel alloy 625

Inconel 625

Inconel 625, a nickel-chromium-molybdenum alloy, is best applied to a wide range of highly corrosive media and is resistant against pitting and crevice corrosion.

Inconel alloy 625Inconel 625 (UNS N06625), having excellent resistance to the crevice, pitting, and corrosion cracking can work best against organic and mineral acids. It also exhibits a very good high-temperature strength. Inconel is an austenitic non-magnetic nickel-base superalloy which is often applied in jet engine and chemical process applications.

Compared to alloy 718, Inconel alloy 625 has much greater corrosion resistance in environments with high levels of temperature. It has outstanding toughness and strength in the temperature which ranges from cryogenic to 2000 of (1093 oC), derived from refractory metal’s solid solution effects. This Inconel grade can stand stress rupture that’s up to 1200 of (649 oC) and can have scaling and oxidation resistance that’s up to 2000 oC. Alloy 625 exhibits excellent stress-corrosion resistance and fatigue strength to chloride ions.

Inconel 625 has proven itself to withstand highly corrosive environments especially in alkaline, fresh water, salt water, air, and neutral salts. Alloyed elements like nickel and chromium resist attacks from oxidizing environments. Additionally, molybdenum prevents pitting and crevice corrosion. The alloy is stabilized from sensitization when welded. The chloride element provides resistance against stress-corrosion cracking. All those alloying elements help the alloy resist oxidation and scaling at very high temperatures.

Inconel alloy 625 is good when it comes to hardness, machinability, and hardenability. Alloy 625 mostly has the hardness capacity of 185 BHN to 287 BHN. Its microstructure remains austenitic at both low and elevated temperatures. Inconel 625 cannot hardened by heat treatment but by cold working.

Inconel 625 is highly immune over a wide range of environments and applications which include marine, naval, aerospace, chemical processing, oil and gas industries.

Other typical applications are:

  • Hydrocarbon processing
  • Components exposed seawater
  • Components to flue gas
  • Oil and gas production
  • Flare stacks

We do include Inconel 625 alloys or Inconel 625 bars (ASTM B446 5666 BS3076) in our product inventory.

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