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Tech Steel & Materials offers nickel and cobalt alloys in a variety of shapes and parts – rod, bar, wire, sheet, plate, strip, tube, pipe, castings and forgings – for use in the aerospace, military, marine and power plant industries.

Selected for their great strength and wear-resistant properties at high temperatures, these alloys have increasingly replaced steel in aircraft jet engines.

Properties

Nickel and cobalt alloys have high strength and creep resistance and are resistant to softening and metals loss at high temperatures from oxidation, sulfidation or carburization.

Nickel- and cobalt-based alloys can be separated into three categories: high temperature, corrosion resistance and electrical conductivity.

High-temperature alloys offer unique strength and/or corrosion-resistant properties at elevated temperatures. Their nickel content ranges from 25% to 60%, with measurable amounts of chromium, molybdenum, columbium and titanium. High-temperature, heat-resistant alloys of nickel and cobalt are often used where high surface stability, particularly creep resistance, is required. The most popular use for the high-temperature cobalt alloy is in gas turbine (turbojet) aircraft engines.

Corrosion-resistant nickel and cobalt alloys resist corrosion due to nickel’s slow rate of oxidation at room temperature and cobalt’s protective shell created by an oxide film. These alloys are routinely used in chemical processing, heat treating, pollution and waste control applications. Nickel and cobalt alloys that conduct electricity are ideal for electronics and situations involving contact with electricity. This alloy category is often used in applications such as TV interiors and lightbulbs.

Applications

Common applications for nickel and cobalt alloys are: engine plumbing, pumps, valves, piping systems, processing equipment, turbines, assemblies, tools, chemical processing, oil and gas well piping.

Select AMS Number:

AMS Number Alloy Type UNS Cross Ref. Spec Misc./Shape
AMS 5537 Cobalt Cobalt R30605  
AMS 5537 Foil Cobalt Cobalt R30605 - Foil AMS 5537 Foil
AMS 5537 Plate Cobalt Cobalt R30605 - Plate AMS 5537 Plate
AMS 5537 Sheet Cobalt Cobalt R30605 - Sheet AMS 5537 Sheet
AMS 5537 Strip Cobalt Cobalt R30605 - Strip AMS 5537 Strip
AMS 5608 Cobalt Cobalt R30188  
AMS 5608 Plate Cobalt Cobalt R30188 - Plate AMS 5608 Plate
AMS 5608 Sheet Cobalt Cobalt R30188 - Sheet AMS 5608 Sheet
AMS 5608 Strip Cobalt Cobalt R30188 - Strip AMS 5608 Strip
AMS 5758
Cobalt Cobalt R30035 - Bar Cobalt
AMS 5759 Cobalt Cobalt R30605  
AMS 5759 Bar Cobalt Cobalt R30605 - Bar AMS 5759 Bar
AMS 5759 Custom Tube Cobalt Cobalt R30605 - Custom Tube AMS 5759 Custom Tube
AMS 5759 Forging Cobalt Cobalt R30605 - Forging AMS 5759 Forging
AMS 5759 Ring Cobalt Cobalt R30605 - Ring AMS 5759 Ring
AMS 5768 Cobalt Cobalt R30155  
AMS 5768 Bar Cobalt Cobalt R30155 - Bar AMS 5768 Bar
AMS 5768 Forging Cobalt Cobalt R30155 - Forging AMS 5768 Forging
AMS 5768 Ring Cobalt Cobalt R30155 - Ring AMS 5768 Ring
AMS 5768 Wire Cobalt Cobalt R30155 - Wire AMS 5768 Wire
AMS 5769 Cobalt Cobalt R30155  
AMS 5769 Bar Cobalt Cobalt R30155 - Bar AMS 5769 Bar
AMS 5769 Forging Cobalt Cobalt R30155 - Forging AMS 5769 Forging
AMS 5769 Ring Cobalt Cobalt R30155 - Ring AMS 5769 Ring
AMS 5772 Cobalt Cobalt R30188  
AMS 5772 Bar Cobalt Cobalt R30188 - Bar AMS 5772 Bar
AMS 5772 Custom Tube Cobalt Cobalt R30188 - Custom Tube AMS 5772 Custom Tube
AMS 5772 Forging Cobalt Cobalt R30188 - Forging AMS 5772 Forging
AMS 5772 Ring Cobalt Cobalt R30188 - Ring AMS 5772 Ring
AMS 5796
Cobalt Cobalt R30605 - Wire Cobalt
AMS 5801
Cobalt Cobalt R30188 - Wire Cobalt
AMS 5831
Cobalt Cobalt R30556 - Wire Cobalt
AMS 5833
Cobalt Cobalt R30003 - Wire Cobalt
AMS 5841
Cobalt Cobalt R30159 - Bar Cobalt
AMS 5842F
Cobalt Cobalt R30159 AMS 5842E Bar Cobalt
AMS 5843
Cobalt Cobalt R30159 - Bar Cobalt
AMS 5844
Cobalt Cobalt R30035 - Bar Cobalt
AMS 5845
Cobalt Cobalt R30035 - Bar Cobalt
AMS 5874 Cobalt Cobalt R30556  
AMS 5874 Plate Cobalt Cobalt R30556 - Plate AMS 5874 Plate
AMS 5874 Sheet Cobalt Cobalt R30556 - Sheet AMS 5874 Sheet
AMS 5874 Strip Cobalt Cobalt R30556 - Strip AMS 5874 Strip
AMS 5875
Cobalt Cobalt R30003 - Strip Cobalt
AMS 5876
Cobalt Cobalt R30003 - Strip Cobalt
AMS 5894 Cobalt Cobalt R30016  
AMS 5894 Bar Cobalt Cobalt R30016 - Bar AMS 5894 Bar
AMS 5894 Plate Cobalt Cobalt R30016 - Plate AMS 5894 Plate
AMS 5894 Sheet Cobalt Cobalt R30016 - Sheet AMS 5894 Sheet

Select ASTM Number:

ASTM Specification Alloy Type UNS Cross Ref. Spec
ASTM F1091-12 Cobalt Cobalt UNS R30605 AMS 5537, AMS 5759, AMS 5796
ASTM F1377-13 Cobalt Cobalt UNS R30075
ASTM F1537-11 Cobalt Cobalt UNS R31537
ASTM F1537-11 Cobalt Cobalt UNS R31538
ASTM F1537-11 Cobalt Cobalt UNS R31539
ASTM F562-13 Cobalt Cobalt UNS R30035 AMS 5844, AMS 5845, AMS 5758
ASTM F688-14 Cobalt Cobalt UNS R30035 AMS 5844, AMS 5845, AMS 5758
ASTM F75-12 Cobalt Cobalt UNS R30075
ASTM F799-11 Cobalt Cobalt UNS R31537
ASTM F799-11 Cobalt Cobalt UNS R31538
ASTM F799-11 Cobalt Cobalt UNS R31539
ASTM F90-14 Cobalt Cobalt UNS R30605 AMS 5537, AMS 5759, AMS 5796
ASTM F961-14 Cobalt Cobalt UNS R30035 AMS 5844, AMS 5845, AMS 5758