Commercially Pure and Low-Alloy Nickels

Commercially pure and low-alloy nickels are used as corrosion-resistant materials with very good formabil-ity. Some Ni-based alloys are precipitation hardened Ni-2wt%Be (Duranickel 301) shows pronounced precipitation hardening. Commonly used, commercially pure and low-alloy nickels are listed in Table 3.1-92. Room-temperature mechanical properties of these and 

Alloy Ultimate tensile strength (MPa) [] (ksi) Yield strength (0.2% offset) (MPa) [ (ksi) Elongation in 50 mm (2 in) (%) Elastic modulus (tension) (GPa) 1 (10 psi) Hardness 

Properties are for annealed sheet unless otherwise indicated. 

Nickel forms extensive solid solutions with many alloying elements complete solid solutions with Fe and Cu, and limited solid solutions with 35 wt% Cr, 20wt%Mo, 5-10wt%Al, Ti, and Mn and V. Nickel and its alloys are providing favorable properties for uses in corrosive environments and at elevated temperatures. 

The extensive solubility of several of the alloying elements is the basis of solid solution hardening which scales roughly with the atomic-size difference of the solute and is, therefore, pronounced with W, Mo, Nb, Ta, and Al. Based on the face-centered cubic structure, Ni-based solid solutions show high ductility, fracture toughness, and formability. The basic corrosion resistance of Ni is strongly increased by alloying additions of Cr, Mo, and W. 

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