The best replacement for cast iron is steel.

The best alternatives to cast iron are rated as following:
★★★★★  steel
★★★★  stainless steel
★★★  ductile iron
★★★  acrylic tub
★★  wrought iron
★★  stainless steel sink
★★  carbon steel
★  acrylic tubs
★  carbon steel wok
★  cast steel
★  cast aluminum
★  enameled cast iron
★  acrylic
★  stainless steel grates
★  aluminum heads
★  pvc
★  steel tub
★  acrylic clawfoot tub
★  acrylic bathtub
  stainless steel burners
  teflon
  nonstick
  fireclay
  acrylic bathtubs
  steel wood stove
  stainless steel cookware
  enamel
  americast
  ceramic sink
  steel fireplace grate
  stainless steel kitchen sink
  porcelain grill grates
  stainless steel grill grates
  ceramic cookware
  steel wood stoves
  steel distributor gear
  acrylic sink
  stainless steel grill
  steel stove
  enameled dutch oven
  stoneware
  acrylic kitchen sinks
  enamel dutch oven
  vitreous china sink
  iron
  porcelain
  stainless grates
  stainless
  stainless steel sinks
  enamel cast iron
  abs
  composite granite sink
  stainless grill
  stainless steel pots
  stainless steel skillet
  copper
  fiberglass bathtub
  acrylic sinks
  non stick
  pizza stone
  aluminum intake manifold
  china sink
  steel stoves
  fiberglass tub
  aluminum block
  forged iron

Your alternative for cast iron is not listed? Suggest!
Speaking about cast iron, one probably shouldn't forget about induction.

Other search terms related to cast iron and their ratings are:
★★★★★ induction
★★★★ glass cooktop
★★★★ induction cooktops
★★★ ceramic coating
★ glass top stove
You have in mind a companion for cast iron and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cast iron in all years. Click on graph for more.
cast iron
steel
stainless steel