P20 vs 718 – Composition, Heat Treatment, Properties, and Applications

Table Of Content

Table Of Content

Before I prepare the full 1,500-word technical comparison, please confirm which material is meant by "718." That designation can refer to different alloys in different contexts:

  • Option A — Inconel 718 (UNS N07718): a nickel‑based superalloy widely used for high-temperature, high-strength aerospace and power‑generation components.
  • Option B — A steel grade commonly labeled "718" or "718H" in some regional/tooling catalogs (often a pre‑hardened or air‑hardening mold/tool steel), which is different from Inconel and has typical quench‑and‑temper behavior.
  • Option C — A specific national standard number (please provide the full standard designation, e.g., EN/1.xxxx, JIS/Gxxxx, GB/T xxxx) so I can match the exact chemistry and processing.

If you don’t specify, I will assume you mean P20 (pre‑hardened mold/tool steel) versus Inconel 718 (UNS N07718). Which would you like?

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