What is the other name for Inconel 625?
Common trade names: Inconel 625, Alloy 625, Nickel 625, Chornin 625, Altemp 625, Nickelvac 625, Haynes 625, Nicrofer 6020.
INCONEL Nichrome 625 (UNS N06625/W.Nr. 2.4856) is used for its high strength, excellent workability (including joining), and excellent corrosion resistance. Service temperatures range from cryogenic to 1800°F (982°C).
INCONEL 625 alloy's strength comes from the hardening effect of molybdenum and niobium on its nickel-chromium matrix; therefore, no precipitation hardening treatment is required. This combination of elements also provides excellent resistance to a wide range of exceptionally severe corrosive environments and to high-temperature effects such as oxidation and carburization.


Available product forms:
Pipes, tubes, plates, strips, plates, round bars, flat bars, forgings, hexagonal bars, wire rods and extrusions.
Specification
INCONEL Alloy 625 is designated UNS N06625, Werkstoff No. 2.4856, ISO NW6625, and is listed in NACE MR-01-75.
Rods, bars, wire, and forgings: ASTM B 446; ASME SB 446 (rods), ASTM B 564; ASME SB 564 (forgings); AMS 5666 (rods, forgings, and rings); AMS 5837 (wire), ISO 9723 (rods), ISO 9724 (wires), ISO 9725 (forgings), VdTÜV 499 (rods and rods), BS 3076NA21 (rods and rods), EN 10095 (rods, rods and rods ), DIN 17752 (rods and rods), ASME Code Case 1935 (rods, bars and forgings), DIN 17754 (forgings), DIN 17753 (wire rods).
Plate, Sheet and Strip: - ASTM B 443; ASTM SB 443 (Plate, Sheet and Strip), AMS 5599; 5869; MAM 5599 (Plate, Sheet and Strip), ISO 6208 (Plate, Sheet and strip), VdTÜV 499 (plate, sheet and strip), BS 3072NA21 (plate and sheet), EN 10095 (plate, sheet and strip), DIN 17750 (plate, sheet and strip), ASME Code Case 1935.
Pipe materials: ASTM B 444; ASTM B 829; ASME SB444; ASME SB 829 (seamless pipe), ASTM B704; ASTM B 751; ASME SB 704; ASME SB 751 (welded pipe), ASTM B705; ASTM B 775; ASME SB 705 ; ASME SB 775 (welded pipe), ISO 6207 (pipe), AMS 5581 (seamless and welded pipe), VdTÜV 499 (pipe), BS 3074NA21 (seamless pipe and pipe), DIN 17751 (pipe), ASME Code Case 1935.
Other product forms: ASTM B 366; ASME SB 366 (pipe fittings), ISO 4955A (heat-resistant steels and alloys), DIN 17744 (chemical composition of all product forms).
Chemical Composition
|
Nickel |
58 min. |
|
Chromium |
20.0 - 23.0 |
|
Iron |
5.0 max. |
|
Molybdenum |
8.0 - 10.0 |
|
Niobium (plus Tantalum) |
3.15 - 4.15 max. |
|
Carbon |
0.010 max. |
|
Manganese |
0.50 max. |
|
Silicon |
0.50 max |
|
Phosphorus |
0.015 max. |
|
Sulfur |
0.015 max. |
|
Aluminium |
0.40 max. |
|
Titanium |
0.40 max. |
|
Cobalt |
1.0 max. |





