Nickel 625 - Inconel 625, UNS N06625, Alloy 625 Seamless Welded Pipes Tubes Manufacturers Suppliers Stockist India

Brand Nickel 625 - Inconel 625, UNS N06625, Alloy 625 Seamless Welded Pipes Tubes Exporters in Mumbai India

Nickel 625 - Inconel 625, UNS N06625, Alloy 625 Seamless Welded Pipes Tubes Manufacturers Suppliers Stockist India

Nickel 625 - Inconel 625, UNS N06625, Alloy 625 Seamless Welded Pipes Tubes

Nickel Pipe

ALLOY 625 SEAMLESS NICKEL PIPE

Alloy 625 nickel pipe is made from a nickel-chromium-molybdenum alloy with an addition of niobium. High strength and toughness from cryogenic temperatures to 1800 F. Good oxidation resistance, exceptional fatigue strength, and good resistance to many corrosives.

Typical applications include chemical processing, aerospace and marine engineering, pollution control equipment, and nuclear reactors.

Stock Size Range:

OD:
1/2" through 4"
Wall:
Schedule 10 through Schedule 80

Specifications: ASTM B444, ASME SB444

Typical Chemical Composition %
Nickel 58.0 min
Molybdenum 8.0-10.0
Nb 3.15-4.15
Iron 5.0 max
Silicon 0.50max
Sulfur 0.015 max
Carbon 0.10 max
Manganese 0.50 max
Al 0.40 max
Cr 20.0-23.0
Ti 0.40 max
P 0.015 max
Cobalt 1.0 max
Typical Mechanical Properties
Solution Annealed  
Yield Strength (0.2% offset) 40 ksi min
Tensile Strength 100 ksi min
Elongation % in 2 inches 30

INCONEL® ALLOY 625

Online Inquiry

UNS Number N06625

Other common names: Alloy 625

Inconel 625 is a corrosion and oxidation resistant nickel alloy that is used both for its high strength and outstanding aqueous corrosion resistance. Its outstanding strength and toughness is due to the addition of niobium which acts with the molybdenum to stiffen the alloy’s matrix. Alloy 625 has excellent fatigue strength and stress-corrosion cracking resistance to chloride ions. This nickel alloy has excellent weldability and is frequently used to weld AL-6XN. This alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. Some typical applications Inconel 625 is used in are chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors.

In what form is Inconel 625 available at K.M Steel ?

  • Sheet
  • Plate
  • Bar
  • Pipe & Tube (welded & seamless)
  • Wire

What are the characteristics of Inconel 625?

  • High creep-rupture strength
  • Oxidation resistant to 1800° F
  • Seawater pitting and crevice corrosion resistant
  • Immune to chloride ion stress corrosion cracking
  • Non-magnetic

Chemical Composition, %

Cr Ni Mo Co + Nb Ta Al Ti C
20.00-30.00 Remainder 8.0-10.0 1.0 max 3.15-4.15 .40 max .40 max .10 max
Fe Mn Si P S      
5.0 max .50 max .50 max .015 max .015 max      

In what applications is Inconel 625 used?

  • Aircraft ducting systems
  • Aerospace
  • Jet engine exhaust systems
  • Engine thrust-reverser systems
  • Specialized seawater equipment
  • Chemical process equipment

Fabrication with Inconel 625

Alloy 625 has excellent forming and welding characteristics. It may be forged or hot worked providing temperature is maintained in the range of about 1800-2150° F. Ideally, to control grain size, finish hot working operations should be performed at the lower end of the temperature range. Because of its good ductility, alloy 625 is also readily formed by cold working. However, the alloy does work-harden rapidly so intermediate annealing treatments may be needed for complex component forming operations. In order to restore the best balance of properties, all hot or cold worked parts should be annealed and rapidly cooled. This nickel alloy can be welded by both manual and automatic welding methods, including gas tungsten arc, gas metal arc, electron beam and resistance welding. It exhibits good restraint welding characteristics.

ASTM Specifications

Pipe Smls Pipe Welded Tube Smls Tube Welded Sheet/Plate Bar Forging Fitting Wire
B444 B705 B444 B704 B443 B446 - - -

Mechanical Properties 
Representative Tensile Properties, bar, 1800° F anneal

Temp° F Tensile (psi) .2% Yield (psi) Elongation in 2 “ (%)
70 144,000 84,000 44
400 134,000 66,000 45
600 132,000 63,000 42.5
800 131,500 61,000 45
1000 130,000 60,500 48
1200 119,000 60,000 34
1400 78,000 58,500 59
1600 40,000 39,000 117
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