Nickel Alloy Inconel 625
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Nickel Alloy Inconel 625

Alloy 625 is a nickel-chromium-molybdenum solid solution strengthened alloy with a nominal chemical composition of 61% nickel, 22% chromium, and 9% molybdenum. It is commonly referred to by the tradename Inconel® 625 and the universal designation UNS N06625. Alloy 625 provides superior corrosion resistance in aggressive environments coupled with excellent strength and weldability.

As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.

Product Introduction

Inconel 625 (UNS designation N06625) is a nickel-based superalloy that possesses high strength properties and resistance to elevated temperatures. It also demonstrates remarkable protection against corrosion and oxidation. Its ability to withstand high stress and a wide range of temperatures, both in and out of water, as well as being able to resist corrosion while being exposed to highly acidic environments makes it a fitting choice for nuclear and marine applications.

Chemical Composition:

  Cr Ni Mo Co Nb (+Ta) Ti W Cu C Mn N Si P S Fe Al
Min 20.00 58.00 8.00   3.15                      
Max 23.00   10.00 1.00 4.15 0.40     0.10 0.50   0.50 0.015 0.015 5.00 0.40

Mechanical Properties:

  Bars up to and including 4" diameter or section Bars above 4" diameter or section
0.2% Proof Stress 415 N/mm2 60ksi 345 N/mm2 50ksi
Tensile Strength 830 N/mm2 120ksi 760 N/mm2 110ksi
Elongation, 5.65√S0 and 4D 30%   25%  
Reduction of Area 35%   35%  
Hardness (Brinell)        

Physical Properties:

Density (Kg.m-1) 84.4
Magnetic Permeability (20°C) <1.001
Curie Temperature (°C) -196
Young's Modulus (N/mm2) 207.5
Specific Heat, 20°C (J/(g.K)) 410
Specific Electrical Resistance, 20°C (Ω-m) 0.0129
Thermal conductivity, 20°C (W/(m.K)) 9.9
Mean coefficient of thermal expansion, 20-100°C (/K) 12.8 x 10-6

Inconel Alloy 625

Nickel Inconel Alloy 625 Properties Including:
  • Strength due to addition of molybdenum and niobium
  • Outstanding thermal fatigue strength
  • Resistance to oxidation and a wide range of corrosive elements
  • Ease of joining through all types of welding
  • Handles a wide range of temperatures from cryogenic to 1800°F (982°C)
Nickel Alloy 625 Applications Including
  • Nuclear reactor-cores and control-rod components
  • Wire rope for cables and blades on Naval crafts such as gunboats and subs
  • Oceanographic equipment
  • Rings and tubing for environmental control systems
  • Meets ASME code for Boiler and Pressure Vessels
Packaging&Shipping

Nickel Alloy Inconel 625

Inconel 625

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