Charcoal use in small- to medium-sized BFs is common Brazil.  Charcoal in has a lower mechanical stability, much lower ash content and much higher volatile material content (20 – 35%) than coke. The use of charcoal in large blast furnaces is limited due to its low mechanical resistance. Charcoal in BF reduces CO₂ substantially, provided charcoal is produced sustainably.  However, the potential of this measure is limited to regions where charcoal can be made available in sufficient quantitites and reasonable costs.