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AMS 5898 is a pressure-nitrided, martensitic cold worked steel. AMS 5898 is known for its extreme cleanliness and fine, homogeneous structure. It is manufactured using nitrogen as a partial substitute for carbon, which leads to better corrosion resistance then conventional cold worked steels. AMS 5898 is commonly found in ball bearings used in the aerospace industry along with knives, and polished molds in the plastic industry.

Chemical Properties

Element min max
Carbon .25 .35
Silicon 1
Manganese 1
Chromium 14 16
Nickel .5
Molybdenum .85 1.1
Nitrogen .3 5

Applicable Specifications:

AMS 5898 – Steel, Corrosion –Resistant, Bars, Wire and Forgings, Consumable Electrode Melted Under Pressure

Select AMS Number:

AMS Number Alloy Type UNS Cross Ref. Spec Misc./Shape
AMS 5898 AMS 5898 Steel -  
AMS 5898 Bar AMS 5898 Steel - - Bar AMS 5898 Bar
AMS 5898 Forging AMS 5898 Steel - - Forging AMS 5898 Forging
AMS 5898 Wire AMS 5898 Steel - - Wire AMS 5898 Wire