The present invention relates to a method of producing porous alpha-SiC containing shaped body comprising anhedral crystals in a concentration higher than 60% and porous alpha-SiC containing shaped body produced by that method. The porous alpha-SiC containing shaped body shows a characteristic microstructure providing a high degree of mechanical stability. The product is used as diesel particulatefilter and/or as catalyst support. A method of producing a porous silicon carbide product, said method comprising: - preparing a mixture comprising silicon, carbon, at least one silicide forming andcarbide forming agent (e.g. Al, Zn or Mg) and at least one alloy forming agent (Cu).