Carbon steel, an Uncommon card

The card carries these facts from its Wikipedia article.

• The definition of carbon steel from the American Iron and Steel Institute states: no minimum content is specified or required for chromium, cobalt, molybdenum, nickel, niobium, titanium, tungsten, vanadium, zirconium, or any other element to be added to obtain a desired alloying effect, or the specified minimum for copper does not exceed 0.40%, or the maximum content specified for any of the…
• The addition of significant amounts of other metals, such as nickel, chromium, vanadium, molybdenum, changes the materials definition from carbon steel to alloy steel.
• As the carbon content percentage rises, steel has the ability to become harder and stronger through heat treating, however, it becomes less ductile.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Carbon steel article was read about 110,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 66 and blocks with 49: each hit it takes is cut by 20 %.

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The cards just above and just below Carbon steel in the power ranking, all domains together.