Alloy 625 (UNS N06625)
TECHNICAL DATA SHEET
Alloy 625
(UNS N06625) NICKEL ALLOY
Chemical Composition Chemical Composition (wt%) limits as specified in ASTM B446*
Description
Alloy 625 is an austenitic nickel-base superalloy with excellent resistance 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. Alloy 625 can be used for parts requiring both corrosion and oxidation resistance up to 2000ºF (1093˚C). AMS 5666 requires a minimum yield strength of 60,000 psi at room temperature for bars under 4 inches in diameter. Mechanical properties for bars 4 inches in diameter and larger are to be agreed upon by purchaser and vendor. This alloy is exceptionally resistant to crevice corrosion and stress corrosion cracking and to chemical attack in both highly oxidizing to moderately reducing conditions. Alloy 625 is virtually immune to corrosion in marine environments and is used extensively in the hot section of jet engines and in high temperature corrosive environments in the chemical processing industry. The alloy has outstanding resistance to creep and stress rupture up to 1200ºF (649˚C), and oxidation and scaling resistance up to 2000ºF (1093˚C).
Data are typical, are provided for informational purposes, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice. We make no representation or warranty as to its accuracy and assume no duty to update. Actual data on any particular product or material may vary from those shown herein. © 2015 Double Eagle Alloys Inc. All rights reserved.
Alloy 625 0.10 20.00-23.00 58.00 min 8.00-10.00 5.00 0.40 0.50 0.50 0.015 0.015 0.40 3.15-4.15 1.00
Element Carbon Chromium Nickel Molybdenum Iron Titanium Manganese Silicon Phosphorus Sulfur Aluminum Columbium+Tantalum Cobalt
* Maximum, unless range is indicated
Mechanical Properties Mechanical property requirements for heat treated bar product as specified in ASTM B446 Property
Grade 1 (up to 4”)
Yield Strength, min. (ksi) Tensile Strength, min. (ksi) Elongation, min. (%)
50 110 25
40 100 30
Physical properties for 625 Property Density, lb/in3 Modulus of Elasticity, psi Coefficient of Thermal Expansion, 68-212˚F, /˚F Thermal Conductivity, Btu/ft hr ˚F Specific Heat, Btu/lb ˚F Electrical Resistivity, Microhm-in
Typical standards for 625
w w w. d o u b l e e a g l e a l l o y s . c o m
(over 4”)
Physical Properties
Standards Double Eagle Alloys 1660 N 168th E Avenue Tulsa, OK 74116 Phone: (918) 254-1100 Fax: (918) 254-1101
60 120 30
Grade 1 Grade 2
625 ASTM B446 ASME SB446 AMS 5666 AMS 5665
625 Data 0.305 29.8 x 106 7.1 x 10-6 6.3 0.098 50.7
Alloy 625
(UNS N06625) NICKEL ALLOY
Chemical Composition Chemical Composition (wt%) limits as specified in ASTM B446*
Description
Alloy 625 is an austenitic nickel-base superalloy with excellent resistance 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. Alloy 625 can be used for parts requiring both corrosion and oxidation resistance up to 2000ºF (1093˚C). AMS 5666 requires a minimum yield strength of 60,000 psi at room temperature for bars under 4 inches in diameter. Mechanical properties for bars 4 inches in diameter and larger are to be agreed upon by purchaser and vendor. This alloy is exceptionally resistant to crevice corrosion and stress corrosion cracking and to chemical attack in both highly oxidizing to moderately reducing conditions. Alloy 625 is virtually immune to corrosion in marine environments and is used extensively in the hot section of jet engines and in high temperature corrosive environments in the chemical processing industry. The alloy has outstanding resistance to creep and stress rupture up to 1200ºF (649˚C), and oxidation and scaling resistance up to 2000ºF (1093˚C).
Data are typical, are provided for informational purposes, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice. We make no representation or warranty as to its accuracy and assume no duty to update. Actual data on any particular product or material may vary from those shown herein. © 2015 Double Eagle Alloys Inc. All rights reserved.
Alloy 625 0.10 20.00-23.00 58.00 min 8.00-10.00 5.00 0.40 0.50 0.50 0.015 0.015 0.40 3.15-4.15 1.00
Element Carbon Chromium Nickel Molybdenum Iron Titanium Manganese Silicon Phosphorus Sulfur Aluminum Columbium+Tantalum Cobalt
* Maximum, unless range is indicated
Mechanical Properties Mechanical property requirements for heat treated bar product as specified in ASTM B446 Property
Grade 1 (up to 4”)
Yield Strength, min. (ksi) Tensile Strength, min. (ksi) Elongation, min. (%)
50 110 25
40 100 30
Physical properties for 625 Property Density, lb/in3 Modulus of Elasticity, psi Coefficient of Thermal Expansion, 68-212˚F, /˚F Thermal Conductivity, Btu/ft hr ˚F Specific Heat, Btu/lb ˚F Electrical Resistivity, Microhm-in
Typical standards for 625
w w w. d o u b l e e a g l e a l l o y s . c o m
(over 4”)
Physical Properties
Standards Double Eagle Alloys 1660 N 168th E Avenue Tulsa, OK 74116 Phone: (918) 254-1100 Fax: (918) 254-1101
60 120 30
Grade 1 Grade 2
625 ASTM B446 ASME SB446 AMS 5666 AMS 5665
625 Data 0.305 29.8 x 106 7.1 x 10-6 6.3 0.098 50.7
