INCONEL 625, Nickel-Chromium-Molybdenum-Niobium Alloy, Alloy 625

UNS N06625, EN 2.4856, NiCr22Mo9Nb

Inconel 625 has a composition of Nickel, Chromium, and Molybdenum with an addition of Niobium. Molybdenum giving its superior stiffening property along with Niobium giving its high strength property on the matrix of Nickel-Chromium properties making this alloy responsible for superior resistance to a wide range of corrosive environments of unusual severity and also in high-temperature effects such as oxidation and carburization.

CHEMICAL PROPERTIES

Ni Cr Fe C1) Mn Si Co AI Ti
Min. 58 21              
Max. 71 23 5 0.03 0.5 0.4 1 0.4 0.4

PHYSICAL PROPERTIES

Specific Heat [J/kg-K]   419
Electrical resistivity [μΩ . cm]   129
Thermal conductivity [W/m . K]   10.2
Average coefficient of thermal expansion [10-6/°C] 20~200°C 12.8
    20~300°C 13.1
    20~400°C 13.6
Young's modulus [MPa]   20.7X1044
Magnetism     None
Melting range [°C]   1290 ~ 1350

MECHANICAL PROPERTIES

Forms & Condition Tensile Strength Yield Strength (0.2% Offset) Elongation, %Hardness
  Ksi MPa Ksi Mpa Brinell (3000 - Kg) Rockwell B
Rod and Bar              
Annealed 75-90 517-620 25-50 172-345 60-35 110-149 60-80
Cold-Drawn, Stress-Relieved 84-120 579-827 55-100 379-690 40-22 160-225 85-20C
Plate              
Hot-Rolled, As-Rolled 75-95 517-655 40-75 276-517 45-30 125-215 70-96
Hot-Rolled, Annealed 70-85 482-586 28-50 193-345 50-35 110-140 60-76
Sheet              
Annealed 70-85 482-586 30-45 207-310 45-35 - 65-80
Cold-Rolled, Hard 100-120 690-827 90-110 621-758 15-2   93 min.a
Strip, Cold-Rolled              
Annealed 70-85 482-586 25-45 172-310 55-35 - 68 max.a
Spring Temper 100-140 690-965 90-130 621-896 15-2   98 min.a
Tube and Pipe, Seamless              
Cold-Drawn, Annealed 70-85 482-586 25-45 172-310 50-35 - 75 max.a
Cold-Drawn, Stress-Relieved 85-120 586-827 55-100 379-690 35-15 - 85-100a
Wire, Cold Drawn              
Annealed 70-95 482-655 30-55 207-379 45-25 - -
The ranges shown are composites for various product sizes and therefore are not suitable for specification purposes. Hardness values are suitable for specification purposes providing tensile properties are not also specified.
Properties on request
Applications: Monel 400 is widely used in Oil & Gas offshore platforms, valves and pumps in chemical plants, heat exchangers and chemical processing equipment in the chemical industry, petroleum refining equipment and marine fixtures and fasteners.

SIZE

Sheet Plate Pipe & Fittings Bar Filler Wire
0.5MM - 3MM 3MM - 25MM ¼ ”NB – 20” NB X SCH 10 – SCH 80 6MM – 250MM 1.2MM – 4MM
3/8” OD – 4” OD X 0.9MM – 12MM

FORMS & STANDARDS

Forms ASTMASME
Plate & Sheet B-443SB-443
Rod & Bar B-446SB-446
Seamless Pipe & Tube B-444SB-444
Bare Wire A-5.14SFA-5.14 Er NiCRMO-3
Coated Electrodes A-5.11SFA-11 E NiCrMo-3
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