Nickel Alloys

[ Various Materials ]

Nickle Alloys

Nickel is a versatile and commonly used metal that’s found in abundance beneath the earth’s crust. Axel Fredrik Cronstedt, a Swedish chemist mineralogist first discovered and isolated nickel. From there Axel noticed that nickel exhibits several sought after properties rendering it useful for various industrial applications.

One major desired property is that nickel is highly ductile and valuable as an alloying element to alter the properties of other metals. As an example, types of stainless steel can be created by adding nickel to the production of alloys offering corrosion resistance and high-temperature endurance, which is ideal for using in chemical plants where exposure to caustic substances may be common.

[ Alloys ]

Chemical Components

Chemical Composition Inconel® 625

C Cr Ni Fe Mn Si Mo Co P S Ti Nb + Ta Al
≤ 0.1 20 – 23 ≥ 58 ≤ 5 ≤ 0.5 ≤ 0.5 8 – 10 ≤ 1* ≤ 0.015 ≤ 0.015 ≤ 0.4 3.15 – 4.15 ≤ 0.4

(mass %) *If determined

Chemical Composition 622

C Mn Si Fe S P Cr Mo W Ni Cu Co V OET
0.015 max 0.50 max 0.08 max 2-6 0.010 max 0.02 max 20-22.5 12.5-14.5 2.5-3.5 Bal 0.50 max 2.50 max 0.35 max 0.50 max

Chemical Composition 686

Cr Mo W Fe Mn C Si Ti S P
19.0-23.0 15.0-17.0 3.0-4.4 ≤5.0 ≤0.75 ≤0.01 ≤0.08 0.02-0.25 ≤0.02 ≤0.04

Chemical Composition 718

Ni Fe Cr Cu Mo Nb C Mn P S Si Ti Al Co B
50.00-55.00 Remainder 17.00-21.00 .30 max 2.80-3.30 4.75-5.50 .08 max .35 max .015 max .015 max .35 max .65-1.15 .20-.80 1.00 max .006 max

Chemical Composition Inconel 725

Ni Cr Mo Nb Ti Al C Mn Si P S Fe
55.0-59.0 19.0 -22.5 7.0-9.5 2.75-4.0 1.0-1.7 0.35 max 0.03 max 0.35 max 0.20 max 0.015 max 0.010 max Rem

Chemical Composition 825

C Cr Ni Fe Mn Si Mo Cu P S Ti Al
≤ 0.05 19.5 – 23.5 38 – 46 BAL ≤ 1 ≤ 0.5 2.5 – 3.5 1.5 – 3 ≤ 0.03 ≤ 0.03 0.6 – 1.2 ≤ 0.2
(mass %)

Chemical Composition C-276 

C Cr Ni Fe Mn Si Mo Co P S V W
≤ 0.02 14.5 – 16.5 BAL 4 – 7 ≤ 1 ≤ 0.08 15 – 17 ≤ 2.5 ≤ 0.03 ≤ 0.03 ≤ 0.35 3 – 4.5
(mass %)

Chemical Composition Monel

C Mn S Si Ni Cu Fe
.30 max
2.00 max
.024 max
.50 max
63.0 min
28.0-34.0
2.50 max

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