Inconel 625 UNS N06625 2.4856 Corrosion-Resisting Superalloy Bars and Plates
A nickel-based solid-solution strengthened high-temperature alloy with excellent high-temperature stability and resistance to reducing acid corrosion. It exhibits good low-temperature toughness, and has enhanced resistance to pitting and crevice corrosion. Additionally, it boasts excellent weldability and thermal stability, maintaining superior tensile and fatigue properties from low temperatures up to 980°C.
Applications of Inconel 625
In the aerospace industry, it can be used to manufacture turbine blades, combustion chambers, guide vanes, mounting flanges, and cylinders for aircraft engines; in the energy sector, it is widely employed in high-temperature equipment such as gas turbines and nuclear power plants; in the chemical industry, it is suitable for high-temperature and high-pressure components in chemical equipment, as well as for conveying highly corrosive media—such as organic acids, inorganic acids, and alkaline solutions—in the fine chemical and pharmaceutical industries.
Equivalent Grades and Commonly Used Specifications of Inconel 625
| Steel Grade | Specification | Specification Name |
| NS3306 /
0Cr20Ni65Mo10Nb4 NS336 |
GB/T 15007 | Designations of corrosion-resisting alloy |
| YB/T 5353 | Hot-rolled plates of corrosion-resisting alloys | |
| YB/T 5354 | Cold-rolled plates of corrosion-resisting alloys | |
| YB/T 5355 | Cold-rolled strips of corrosion-resisting alloys | |
| UNS N06625
/Inconel 625 |
ASTM B564 | Standard Specification for Nickel Alloy Forgings |
| ASTM B443 | Standard Specification for Ni-Cr-Mo-Co Alloy (UNS N06625) and Ni-Cr-Mo-Si Alloy (UNS N06219)* Plate, Sheet and Strip | |
| ASTM B446 | Standard Specification for Ni-Cr-Mo-Ni Alloy, Ni- Cr-Mo-Si Alloy, and Ni-Cr- Mo-Tungsten Alloy Rod and Bar | |
| ASTM B444 | Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625 and UNS N06852) and Nickel-Chromium- Molybdenum-Silicon Alloy (UNS N06219) Pipe and Tube | |
| AMS 5599 | Nickel Alloy, Corrosion- and Heat-Resistant, Plate, Sheet, and Strip, Vacuum Melted, Solution Treated | |
| AMS 5666 | Nickel Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, and Rings, Vacuum Melted, Solution Treated | |
| NCF625 | JIS G 4901 | Corrosion-Resistant and Heat-Resistant Superalloy, Nickel and Nickel Alloy—Bars |
| JIS G 4902 | Corrosion-Resistant and Heat-Resistant Superalloy, Nickel and Nickel Alloy—Plate, Sheet and Strip | |
| 2.4856
NiCr22Mo9Nb |
DIN 17750 | Wrought Nickel and Nickel Alloy Sheet, Plate and Strip |
| DIN 17752 | Rods and Bars of Wrought Nickel and Nickel Alloys-Properties | |
| DIN 17744 | Wrought Nickel Alloys with Molybdenum and Chromium-Chemical Composition | |
| EN 10095 | Heat resisting steels and nickel alloys | |
| Products produced as per other specifications or technical agreements (if need) are available. | ||
Typical Chemical Composition of Inconel 625
|
Elements |
C | Si | Mn | P | S | Co | Cr | Mo | Ti | Al | Fe | Nb |
| Mass Fraction % | ≤0.10 | ≤0.50 | ≤0.50 | ≤0.015 | ≤0.015 | ≤1.00 | 20.00~23.00 | 8.00~10.00 | ≤0.40 | ≤0.40 | ≤5.00 |
3.15~4.15 |
| Products produced as per other specifications or technical agreements (if need) are available. | ||||||||||||
Typical Heat Treatment Condition and Mechanical Properties of Inconel 625
|
Delivery Condition |
Mechanical Properties and Hardness of Heat-Treated Specimens | |||||||
| Applicable thickness
mm |
Rp0.2/
(N/mm2) |
Rm/
(N/mm2) |
A/% | Zb/% | Aku2d/J | HBW |
HRC |
|
|
Annealed Condition |
Over 0.5 up to and incl. 3.0 | ≥415 | ≥830 | ≥30 | / | / | / | / |
| Over 3.0 up to and incl. 70 | ≥380 | ≥760 | ≥30 | / | / | / |
/ |
|
|
Solution-treated Condition |
/ | ≥275 | ≥690 | ≥30 | / | / | / |
/ |
| Products produced as per other specifications or technical agreements (if need) are available. | ||||||||
Product Forms and Size Range of Inconel 625
|
Product forms |
Size range |
|
Bars |
Diameter or side length: 5.0mm~1000mm |
| Flats |
thickness: 4.0mm~1000mm width: 300mm~2200mm |
| Produce as other form and size according to technical requirements are available. | |
