Alloy 718 Cold-rolled nickel rod is a precipitated hardened nickel-chromium alloy containing large amounts of niobium, aluminum, molybdenum and titanium. The alloy is cold processed after solid solution annealing and is usually used for high-strength fasteners requiring a room temperature minimum tensile strength of 220 ksi after precipitation hardening. It is usually used at temperatures of up to 900° F. This grade is antioxidant-resistant to up to 1800° F. Alloy 718 cold reduced nickel is usually repeatedly melted repeatedly by vacuum induction melting (VIM) and vacuum arc refusion (VAR), or vacuum induction melting (VIM), followed by electroslag refusion (ESR).

Chemical Coposition:

Typical cutting rate: 20 surface ft / min at high speed cutting and 80 surface ft / min at hard carbide.

Hard carbide tools are preferred for cutting operations, but high speed steel is preferred for milling (to avoid tooth cutting). Use relatively heavy cutting and low speeds to reduce surface machining hardening. Crude cutting is usually performed before hardening, and refined cutting after hardening. Due to a hardening of about 0.001 inch per inch of workpiece size, shrinkage is allowed.

Density:

0.297 lb / cubic inch, 8.22 g / cubic cm