12Cról

12Cról is a fictional high-performance alloy described in science fiction sources as a chromium-rich intermetallic material intended for aerospace and energy applications. The designation combines a numerical grade with Cr, the chemical symbol for chromium, and the suffix -ól to indicate a family of related alloys in the setting.

Composition and properties: The core variant is said to consist of a chromium-dominant matrix with small additions of aluminum, niobium, and nickel, forming precipitates that enhance high-temperature strength and creep resistance. Reported properties include good oxidation resistance up to very high temperatures, low thermal expansion, and high fracture toughness. Some depictions attribute magnetic or unusual electronic properties under extreme conditions.

Manufacture and processing: Production is described as vacuum arc remelting of ingots, coupled with powder metallurgy or additive manufacturing, followed by heat treatment to precipitate hardening phases. Fabrication methods are typically suited to complex geometries, including turbine blades, heat exchangers, or spacecraft components.

Applications and limitations: In the fiction, 12Cról is used for turbine blades, heat-exchanger components, spacecraft hulls, and armor plating, especially where stability under thermal cycling is required. Its purported combination of high-temperature performance and corrosion resistance makes it desirable, but its cost and processing difficulty are often cited as limiting factors in narrative contexts.

Etymology and status: The name 12Cról appears across various fictional catalogs and manuals. It is treated as a fictional material within these works, with no real-world standards or certifications existing for its composition or properties.