625 Nickel Alloy Plate

625 Nickel Alloy Plate

625 Nickel Alloy Plate General Properties Alloy 625 is an austenitic nickel-chromium-molybdenum-niobium alloy possessing a rare combination of outstanding corrosion resistance coupled with high strength from cryogenic temperatures to 1800°F (982°C). The strength of Alloy 625 is derived from the...
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Product Details

625 Nickel Alloy Plate

General Properties

Alloy 625 is an austenitic nickel-chromium-molybdenum-niobium alloy possessing a rare combination of outstanding corrosion resistance coupled with high strength from cryogenic temperatures to 1800°F (982°C).


The strength of Alloy 625 is derived from the solid-solution hardening of the nickel-chromium matrix by the presence of molybdenum and niobium. Therefore, precipitation-hardening treatments are not required.


The chemical composition of Alloy 625 is also responsible for its outstanding corrosion resistance in a variety of severe operating environments along with resistance to oxidation and carburization in high temperature service. The alloy is resistant to pitting, crevice corrosion, impingement corrosion, intergranular attack and is almost immune to chloride stress corrosion cracking.


Chemical Analysis

Weight % (all values are maximum unless a range is otherwise indicated)





Nickel58.0 min.Silicon0.50
Chromium20.0 min.-23.0 max.Phosphorus0.015
Molybdenum8.0 min.-10.0 max.Sulfur0.015
Iron5.0Aluminum0.40
Niobium (plus Tantalum)3.15 min.-4.15 max.Titanium0.40
Carbon0.10Cobalt (if determined)1.0
Manganese0.50


Physical Properties

Density

0.305 lbs/in3
8.44 g/cm3

Specific Heat

0.102 BTU/lb-°F (32-212°F)
427 J/kg-°K (0-100°C)

Modulus of Elasticity

30.1 x 106 psi
207.5 GPa


Thermal Conductivity 200°F (100°C)

75 BTU/hr/ft2/ft/°F
10.8 W/m-°K

Melting Range

2350 – 2460°F
1290 – 1350°C

Electrical Resistivity

50.8 Microhm-in at 70°C
128.9 Microhm-cm at 210°C


Mean Coefficient of Thermal Expansion

Temperature Range


°F°Cin/in/°Fcm/cm°C
200937.1 x 10-612.8 x 10-6
4002047.3 x 10-613.1 x 10-6
6003167.4 x 10-613.3 x 10-6
8004277.6 x 10-613.7 x 10-6
10005387.8 x 10-614.0 x 10-6
12006498.2 x 10-614.8 x 10-6
14007608.5 x 10-615.3 x 10-6
16008718.8 x 10-615.8 x 10-6
17009279.0 x 10-616.2 x 10-6


Mechanical Properties

Typicals Values at 68°F (20°C)

Yield Strength
0.2% Offset
Ultimate Tensile
Strength
Elongation
in 2 in.
Hardness

psi (min.)(MPa)psi (min.)(MPa)% (min.)(max.)
65,000448125,00086250200 Brinell


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