Steelmax blades are offered with Tungsten Carbide Tips (TCT) or Cermet (Ceramic Metallic) Tips, designed for clean cool cutting of mild steel, stainless steel, aluminum and thin steel. They are suitable for cutting plate, grating, angle, channel, tube, pipe and many other materials. TCT Blades. Our industry leading Tungsten Carbide Tipped (TCT) saw blades utilize the highest-quality European C6 grade . tungsten carbides.