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Alloy 625 Inconel Supplied in Sheet, Coil, Bar & Plate - AMS 5599, 5666 N06625)


Inconel® 625 is a non-magnetic, austenitic nickel-based superalloy with excellent resitance to oxidation and corrosion over a broad range of conditions, including jet engine and chemical process applications.  The outstanding strength and toughness of Alloy 625, at temperatures ranging from cryogenic to 2000˚F (1093˚C), are derived primarily from the solid solution strengthening of columbium and molybdenum in a nickel-chromium matrix. This alloy displays high tensile strength, excellent fabricability, and brazeability.

Standard Inventory Specifications 

  • UNS N06625
  • AMS 5599
  • AMS 5666
  • ASTM B 443 Gr 1
  • ASTM B 446
  • ASME SB 443 Gr 1
  • EN 2.4856
  • EN 10204
  • EMS95377
  • PWA-LCS
  • GE-S400/1000
  • RR SABRe Edition 2
  • DFARS Compliant

Common Trade Names

  • Inconel Alloy 625 (® Special Metals)
  • Haynes 625 (® Haynes International)
  • ATI 625 (™ Allegheny Technologies)

Common Applications of Nickel Alloy 625

  • Jet engine components
  • Heat exchanger
  • Chemical processing equipment

Inventory Size Range

  • Sheet : 0.016" - 0.165"
  • Bar : 0.375" - 7.000"
  • Plate : 0.1875" - 2.000"

Now Stocking 

  • 625-LCF (Low Cycle Fatigue)
  • Material is Vacuum Induction Melted - Electroslag Remelted, Type 1
  • 625-LCF is available in thicknesses from .031" nom. to .078" nom.

Please contact us for more details. 

 

The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.

Nickel-Base Superalloy

Inconel 625 (UNS Designation N06625)

Chemical Composition
Element Percent by Weight
Carbon 0.010 maximum
Manganese 0.50 maximum
Phosphorus 0.015 maximum
Sulfur 0.015 maximum
Silicon 0.50 maximum
Chromium 20.00 - 23.00
Nickel Balance
Molybdenum 8.00 - 10.00
Columbium 3.15 - 4.15
Titanium 0.40 maximum
Aluminum 0.40 maximum
Tantalum 0.05 maximum
Iron 5.00 maximum

Resistance to Corrosion and Oxidation

The high level of chromium and molybdenum in inconel 625 alloy provides a high level of pitting and crevice corrosion resistance to chloride contaminated media, such as sea water, neutral salts and brines.

Nickel-Base Superalloy

Inconel 625 (UNS Designation N06625)

Physical Properties

  • Density: 0.303 lb/in3 (8.44 g/cm3
  • Specific Gravity: 8.44
  • Melting Range: 2350 - 2460°F (1280 - 1350°C)
  • Specific Heat: 0.098 Btu/lb x °F (410 Joules/kg x °K)
  • Magnetic Permeability (75°F, 200 oersted): 1.0006
Thermal Conductivity
Temperature Range Linear Coefficients of Thermal Expansion1 · 10-6 Thermal Conductivity2 3
°C °F /°C /°F W/m·K Btu/(hr/ft²/in/°F)
-157 -250 - - 7.3 4.2
-129 -200 - - 7.4 4.3
-73 -100 - - 8.3 4.8
-18 0 - - 9.2 5.3
21 70 - - 9.9 5.7
38 100 - - 10.0 5.8
93 200 12.8 7.1 10.7 6.3
204 400 13.1 7.3 12.6 7.3
316 600 13.3 7.4 14.2 8.2
427 800 13.7 7.6 15.7 9.1
538 1000 14.0 7.8 17.5 10.1
649 1200 14.8 8.2 19.0 11.0
760 1400 15.3 8.5 20.8 12.0
871 1600 15.8 8.8 22.8 13.2
927 1700 16.2 9.0 - -
982 1800 - - 25.3 14.6
  1. Average coefficient from 70°F (21°C) to temperature shown
  2. Measurements made at Battelle Memorial Institute
  3. Material annealed 2100°F (1149°C)
Electrical Resistivity
Temperature microhm-cm
°C °F
21 70 128.9
38 100 129.6
93 200 131.9
204 400 133.9
316 600 134.9
427 800 135.9
538 1000 137.9
649 1200 137.9
760 1400 136.9
871 1600 135.9
982 1800 134.9
1093 2000 133.9

Nickel-Base Superalloy

Inconel 625 (UNS Designation N06625)

Mechanical Properties

Typical Short Time Tensile Properties as a Function of Temperature

Typical room temperature tensile properties of material annealed at 1920°F (1065°C) follow.

Temperature 0.2% Yield Strength Ultimate Tensile Strength Elongation Percent
°F °C psi MPa psi MPa
1920 1065 63,000 430 136,000 940 51.5

Data shown are typical, and should not be construed as maximum or minimum values for specification or for final design. Data on any particular piece of material may vary from those shown herein.


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